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Strip a set of characters from a string (view source)

Revision as of 16:27, 5 April 2024

66,586 bytes added ,  1 month ago
→‎{{header|Kotlin}}: Corrected Kotlin solution: the use of regex is error-prone, e.g. `stripChars("fails to remove ] bracket", "aei]")`
(→‎version 2: added the '''changestr''' bif. -- ~~~~)
(→‎{{header|Kotlin}}: Corrected Kotlin solution: the use of regex is error-prone, e.g. `stripChars("fails to remove ] bracket", "aei]")`)
 
(220 intermediate revisions by more than 100 users not shown)
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{{task|String manipulation}}
[[Category:Strings]]
The task is to create a function that strips a set of characters from a string. The function should take two arguments: the first argument being a string to stripped and the second, a string containing the set of characters to be stripped. The returned string should contain the first string, stripped of any characters in the second argument:
 
;Task:
<lang pseudocode> print stripchars("She was a soul stripper. She took my heart!","aei")
Create a function that strips a set of characters from a string.
Sh ws soul strppr. Sh took my hrt!</lang>
 
 
The function should take two arguments:
:::# &nbsp; a string to be stripped
:::# &nbsp; a string containing the set of characters to be stripped
 
<br>
The returned string should contain the first string, stripped of any characters in the second argument:
<syntaxhighlight lang="pseudocode"> print stripchars("She was a soul stripper. She took my heart!","aei")
Sh ws soul strppr. Sh took my hrt!</syntaxhighlight>
 
 
{{Template:Strings}}
<br><br>
 
=={{header|11l}}==
{{trans|Python}}
 
<syntaxhighlight lang="11l">F stripchars(s, chars)
R s.filter(c -> c !C @chars).join(‘’)
 
print(stripchars(‘She was a soul stripper. She took my heart!’, ‘aei’))</syntaxhighlight>
 
{{out}}
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|360 Assembly}}==
{{trans|PL/I}}
The program uses two ASSIST macro (XDECO,XPRNT) to keep the code as short as possible.
<syntaxhighlight lang="360asm">* Strip a set of characters from a string 07/07/2016
STRIPCH CSECT
USING STRIPCH,R13 base register
B 72(R15) skip savearea
DC 17F'0' savearea
STM R14,R12,12(R13) prolog
ST R13,4(R15) " <-
ST R15,8(R13) " ->
LR R13,R15 " addressability
LA R1,PARMLIST parameter list
BAL R14,STRIPCHR c3=stripchr(c1,c2)
LA R2,PG @pg
LH R3,C3 length(c3)
LA R4,C3+2 @c3
LR R5,R3 length(c3)
MVCL R2,R4 pg=c3
XPRNT PG,80 print buffer
L R13,4(0,R13) epilog
LM R14,R12,12(R13) " restore
XR R15,R15 " rc=0
BR R14 exit
PARMLIST DC A(C3) @c3
DC A(C1) @c1
DC A(C2) @c2
C1 DC H'43',CL62'She was a soul stripper. She took my heart!'
C2 DC H'3',CL14'aei' c2 [varchar(14)]
C3 DS H,CL62 c3 [varchar(62)]
PG DC CL80' ' buffer [char(80)]
*------- stripchr -----------------------------------------------------
STRIPCHR L R9,0(R1) @parm1
L R2,4(R1) @parm2
L R3,8(R1) @parm3
MVC PHRASE(64),0(R2) phrase=parm2
MVC REMOVE(16),0(R3) remove=parm3
SR R8,R8 k=0
LA R6,1 i=1
LOOPI CH R6,PHRASE do i=1 to length(phrase)
BH ELOOPI "
LA R4,PHRASE+1 @phrase
AR R4,R6 +i
MVC CI(1),0(R4) ci=substr(phrase,i,1)
MVI OK,X'01' ok='1'B
LA R7,1 j=1
LOOPJ CH R7,REMOVE do j=1 to length(remove)
BH ELOOPJ "
LA R4,REMOVE+1 @remove
AR R4,R7 +j
MVC CJ,0(R4) cj=substr(remove,j,1)
CLC CI,CJ if ci=cj
BNE CINECJ then
MVI OK,X'00' ok='0'B
B ELOOPJ leave j
CINECJ LA R7,1(R7) j=j+1
B LOOPJ end do j
ELOOPJ CLI OK,X'01' if ok
BNE NOTOK then
LA R8,1(R8) k=k+1
LA R4,RESULT+1 @result
AR R4,R8 +k
MVC 0(1,R4),CI substr(result,k,1)=ci
NOTOK LA R6,1(R6) i=i+1
B LOOPI end do i
ELOOPI STH R8,RESULT length(result)=k
MVC 0(64,R9),RESULT return(result)
BR R14 return to caller
CI DS CL1 ci [char(1)]
CJ DS CL1 cj [char(1)]
OK DS X ok [boolean]
PHRASE DS H,CL62 phrase [varchar(62)]
REMOVE DS H,CL14 remove [varchar(14)]
RESULT DS H,CL62 result [varchar(62)]
* ---- -------------------------------------------------------
YREGS
END STRIPCH</syntaxhighlight>
{{out}}
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|8080 Assembly}}==
 
<syntaxhighlight lang="8080asm"> org 100h
jmp demo
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Strip a set of chracters from a string, in place.
;;; Input:
;;; DE = $-terminated string to be stripped
;;; HL = $-terminated string containing characters to strip
stripchars: push h ; Store characters to strip on stack.
mov b,d ; Copy input string pointer to BC. This will be
mov c,e ; the target pointer.
stripchr: ldax d ; Copy current character from [DE] to [BC]
stax b
cpi '$' ; Done?
jz stripdone
pop h ; Get string of characters to strip.
push h
stripsrch: mvi a,'$' ; At the end?
cmp m
jz srchdone
ldax d ; Does it match the character in the input?
cmp m
jz srchfound
inx h ; Look at next character to strip
jmp stripsrch
srchfound: dcx b ; Found: copy next character over it later.
srchdone: inx b ; Increment both pointers
inx d
jmp stripchr
stripdone: pop h ; Remove temporary variable from stack
ret ; Done
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
demo: lxi d,string ; Strip from the string,
lxi h,remove ; the characters to remove.
call stripchars
lxi d,string ; Print the result.
mvi c,9
jmp 5
string: db 'She was a soul stripper. She took my heart!$'
remove: db 'aei$'</syntaxhighlight>
 
{{out}}
 
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|8086 Assembly}}==
 
<syntaxhighlight lang="asm"> bits 16
cpu 8086
section .text
org 100h
jmp demo
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Strip a set of characters from a string, in place.
;;; Input:
;;; DS:DI = $-terminated string to be stripped.
;;; DS:SI = $-terminated string containing chars to strip
stripchars: mov bx,di ; Copy string ptr to use as target ptr
mov dx,si ; Copy ptr to characters to strip
.char: mov al,[di] ; Copy character
mov [bx],al
cmp al,'$' ; Done?
je .done
mov si,dx ; See if character should be stripped
.search: mov ah,[si]
cmp ah,'$' ; End of characters to strip?
je .srchdone
cmp ah,al ; Does it match the current character?
je .srchfound
inc si ; Try next character
jmp .search
.srchfound: dec bx ; Found - decrement target pointer
.srchdone: inc bx ; Increment both pointers
inc di
jmp .char
.done: ret
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
demo: mov di,string ; Strip from the string,
mov si,remove ; the characters to remove.
call stripchars
mov dx,string ; Print the result
mov ah,9
int 21h
ret
section .data
string: db 'She was a soul stripper. She took my heart!$'
remove: db 'aei$'</syntaxhighlight>
 
{{out}}
 
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|ABC}}==
<syntaxhighlight lang="abc">HOW TO RETURN s stripchars chs:
PUT "" IN result
FOR c IN s:
IF c not.in chs: PUT result^c IN result
RETURN result
 
WRITE "She was a soul stripper. She took my heart!" stripchars "aei"/</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Action!}}==
<syntaxhighlight lang="action!">PROC Strip(CHAR ARRAY text,chars,res)
BYTE i,j,size,found
CHAR c
 
size=0
FOR i=1 TO text(0)
DO
c=text(i) found=0
FOR j=1 TO chars(0)
DO
IF c=chars(j) THEN
found=1 EXIT
FI
OD
IF found=0 THEN
size==+1
res(size)=c
FI
OD
res(0)=size
RETURN
 
PROC Main()
CHAR ARRAY
text="She was a soul stripper. She took my heart!",
chars="aei", result(255)
 
Strip(text,chars,result)
PrintE("String to be stripped:")
PrintF("""%S""%E%E",text)
PrintE("Characters to be stripped:")
PrintF("""%S""%E%E",chars)
PrintE("Stripped string:")
PrintF("""%S""%E%E",result)
RETURN</syntaxhighlight>
{{out}}
[https://gitlab.com/amarok8bit/action-rosetta-code/-/raw/master/images/Strip_a_set_of_characters_from_a_string.png Screenshot from Atari 8-bit computer]
<pre>
String to be stripped:
"She was a soul stripper. She took my heart!"
 
Characters to be stripped:
"aei"
 
Stripped string:
"Sh ws soul strppr. Sh took my hrt!"
</pre>
 
=={{header|Ada}}==
<langsyntaxhighlight Adalang="ada">with Ada.Text_IO;
 
procedure Strip_Characters_From_String is
Line 32 ⟶ 294:
begin -- main
Ada.Text_IO.Put_Line(Strip(S, "aei"));
end Strip_Characters_From_String;</langsyntaxhighlight>
{{out}}
 
Output:
 
<pre>> ./strip_characters_from_string
Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Aime}}==
<syntaxhighlight lang="aime">text
stripchars1(data b, text w)
{
integer p;
 
p = b.look(0, w);
while (p < ~b) {
b.delete(p);
p += b.look(p, w);
}
 
b;
}
 
text
stripchars2(data b, text w)
{
b.drop(w);
}
 
integer
main(void)
{
o_text(stripchars1("She was a soul stripper. She took my heart!", "aei"));
o_newline();
 
o_text(stripchars2("She was a soul stripper. She took my heart!", "aei"));
o_newline();
 
return 0;
}</syntaxhighlight>
 
=={{header|ALGOL 68}}==
Line 43 ⟶ 336:
{{works with|ALGOL 68G|Any - tested with release [http://sourceforge.net/projects/algol68/files/algol68g/algol68g-1.18.0/algol68g-1.18.0-9h.tiny.el5.centos.fc11.i386.rpm/download 1.18.0-9h.tiny].}}
{{wont work with|ELLA ALGOL 68|Any (with appropriate job cards) - tested with release [http://sourceforge.net/projects/algol68/files/algol68toc/algol68toc-1.8.8d/algol68toc-1.8-8d.fc9.i386.rpm/download 1.8-8d] - due to extensive use of '''format'''[ted] ''transput''.}}
<langsyntaxhighlight lang="algol68">#!/usr/local/bin/a68g --script #
 
PROC strip chars = (STRING mine, ore)STRING: (
Line 55 ⟶ 348:
);
 
printf(($gl$,stripchars("She was a soul stripper. She took my heart!","aei")))</langsyntaxhighlight>
{{out}}
Output:
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|ALGOL W}}==
<syntaxhighlight lang="algolw">begin
% returns s with the characters in remove removed %
% as all strings in Algol W are fixed length, the length of remove %
% must be specified in removeLength %
string(256) procedure stripCharacters( string(256) value s, remove
; integer value removeLength
) ;
begin
string(256) resultText;
integer tPos;
resultText := " ";
tPos := 0;
for sPos := 0 until 255 do begin
logical keepCharacter;
string(1) c;
c := s( sPos // 1 );
keepCharacter := true;
for rPos := 0 until removeLength - 1 do begin
if remove( rPos // 1 ) = c then begin
% have a character that should be removed %
keepCharacter := false;
goto endSearch
end if_have_a_character_to_remove ;
end for_rPos ;
endSearch:
if keepCharacter then begin
resultText( tPos // 1 ) := c;
tPos := tPos + 1
end if_keepCharacter
end for_sPos ;
resultText
end stripCharacters ;
% task test case %
begin
string(256) ex, stripped;
ex := "She was a soul stripper. She took my heart!";
stripped := stripCharacters( ex, "aei", 3 );
write( "text: ", ex( 0 // 64 ) );
write( " ->: ", stripped( 0 // 64 ) )
end
end.</syntaxhighlight>
{{out}}
<pre>
text: She was a soul stripper. She took my heart!
->: Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|Amazing Hopper}}==
<p>Amazing Hopper! Flavour "Jambo".</p>
<syntaxhighlight lang="Amazing Hopper">
#include <jambo.h>
 
Main
c = ".$%#\tEste@@@ mensaje será purgado!$$$"
 
{"Hopper assembler:\n\n"}
{"$%#@.\t", c} str to utf8, delete char, {"\n"} print
Printnl ("\nHopper Jambo formal syntax:\n\n", Char del ( "$%#@.\t", Utf8( c ) ) )
Set ' "\nHopper Jambo Natural syntax:\n\n", "$%#@.\t", c', Get utf8, and delete char
then print with newline
End
</syntaxhighlight>
{{out}}
<pre>
Hopper assembler:
 
Este mensaje será purgado!
 
Hopper Jambo formal syntax:
 
Este mensaje será purgado!
 
Hopper Jambo Natural syntax:
 
Este mensaje será purgado!
 
</pre>
 
=={{header|APL}}==
 
APL has a built-in function <tt>~</tt> ('without') that removes elements from a vector. Because a string is just
a character vector, this can be used to remove characters from a string.
 
<syntaxhighlight lang="apl">'She was a soul stripper. She took my heart!' ~ 'aei'</syntaxhighlight>
 
{{out}}
 
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|AppleScript}}==
 
===Using text item delimiters===
 
{{works with|AppleScript|Mac OS X 10.6}}
<syntaxhighlight lang="applescript">stripChar("She was a soul stripper. She took my heart!", "aei")
 
on stripChar(str, chrs)
tell AppleScript
set oldTIDs to text item delimiters
set text item delimiters to characters of chrs
set TIs to text items of str
set text item delimiters to ""
set str to TIs as string
set text item delimiters to oldTIDs
end tell
return str
end stripChar</syntaxhighlight>
{{out}}
<pre>
"Sh ws soul strppr. Sh took my hrt!"
</pre>
 
===By functional composition===
====Without regex====
{{Trans|Haskell}}
(Following the Haskell contribution in reversing the argument order to the sequence more probable in a context of potential currying or partial application).
 
<syntaxhighlight lang="applescript">-- stripChars :: String -> String -> String
on stripChars(needles, haystack)
script notNeedles
on |λ|(x)
needles does not contain x
end |λ|
end script
intercalate("", filter(notNeedles, haystack))
end stripChars
 
 
--------------------------- TEST -------------------------
on run
stripChars("aei", "She was a soul stripper. She took my heart!")
--> "Sh ws soul strppr. Sh took my hrt!"
end run
 
 
-------------------- GENERIC FUNCTIONS -------------------
 
-- filter :: (a -> Bool) -> [a] -> [a]
on filter(f, xs)
tell mReturn(f)
set lst to {}
set lng to length of xs
repeat with i from 1 to lng
set v to item i of xs
if |λ|(v, i, xs) then set end of lst to v
end repeat
return lst
end tell
end filter
 
 
-- intercalate :: Text -> [Text] -> Text
on intercalate(strText, lstText)
set {dlm, my text item delimiters} to {my text item delimiters, strText}
set strJoined to lstText as text
set my text item delimiters to dlm
return strJoined
end intercalate
 
 
-- Lift 2nd class handler function into 1st class script wrapper
-- mReturn :: Handler -> Script
on mReturn(f)
if class of f is script then
f
else
script
property |λ| : f
end script
end if
end mReturn</syntaxhighlight>
{{Out}}
<pre>"Sh ws soul strppr. Sh took my hrt!"</pre>
 
====With regex====
OS X Yosemite onwards – importing the Foundation classes to use NSRegularExpression
 
<syntaxhighlight lang="applescript">use framework "Foundation"
 
 
--------- STRIP A SET OF CHARACTERS FROM A STRING --------
 
 
-- stripChars :: String -> String -> String
on stripChars(needles, haystack)
intercalate("", ¬
splitRegex("[" & needles & "]", haystack))
end stripChars
 
 
--------------------------- TEST -------------------------
on run
stripChars("aei", "She was a soul stripper. She took my heart!")
--> "Sh ws soul strppr. Sh took my hrt!"
end run
 
 
-------------------- GENERIC FUNCTIONS -------------------
 
-- splitRegex :: RegexPattern -> String -> [String]
on splitRegex(strRegex, str)
set lstMatches to regexMatches(strRegex, str)
if length of lstMatches > 0 then
script preceding
on |λ|(a, x)
set iFrom to start of a
set iLocn to (location of x)
if iLocn > iFrom then
set strPart to text (iFrom + 1) thru iLocn of str
else
set strPart to ""
end if
{parts:parts of a & strPart, start:iLocn + (length of x) - 1}
end |λ|
end script
set recLast to foldl(preceding, {parts:[], start:0}, lstMatches)
set iFinal to start of recLast
if iFinal < length of str then
parts of recLast & text (iFinal + 1) thru -1 of str
else
parts of recLast & ""
end if
else
{str}
end if
end splitRegex
 
 
-- regexMatches :: RegexPattern -> String -> [{location:Int, length:Int}]
on regexMatches(strRegex, str)
set ca to current application
set oRgx to ca's NSRegularExpression's regularExpressionWithPattern:strRegex ¬
options:((ca's NSRegularExpressionAnchorsMatchLines as integer)) |error|:(missing value)
set oString to ca's NSString's stringWithString:str
set oMatches to oRgx's matchesInString:oString options:0 range:{location:0, |length|:oString's |length|()}
set lstMatches to {}
set lng to count of oMatches
repeat with i from 1 to lng
set end of lstMatches to range() of item i of oMatches
end repeat
lstMatches
end regexMatches
 
 
-- foldl :: (a -> b -> a) -> a -> [b] -> a
on foldl(f, startValue, xs)
tell mReturn(f)
set v to startValue
set lng to length of xs
repeat with i from 1 to lng
set v to |λ|(v, item i of xs, i, xs)
end repeat
return v
end tell
end foldl
 
 
-- intercalate :: Text -> [Text] -> Text
on intercalate(strText, lstText)
set {dlm, my text item delimiters} to {my text item delimiters, strText}
set strJoined to lstText as text
set my text item delimiters to dlm
return strJoined
end intercalate
 
 
-- Lift 2nd class handler function into 1st class script wrapper
-- mReturn :: Handler -> Script
on mReturn(f)
if class of f is script then
f
else
script
property |λ| : f
end script
end if
end mReturn</syntaxhighlight>
{{Out}}
<pre>"Sh ws soul strppr. Sh took my hrt!"</pre>
 
=={{header|Applesoft BASIC}}==
<syntaxhighlight lang="basic">100 LET S$ = "SHE WAS A SOUL STRIPPER. SHE TOOK MY HEART!"
110 LET RM$ = "AEI"
120 GOSUB 200STRIPCHARS
130 PRINT SC$
190 END
200 REM
210 REM STRIPCHARS
220 REM
230 LET SC$ = ""
240 LET SL = LEN (S$)
250 IF SL = 0 THEN RETURN
260 FOR SI = 1 TO SL
270 LET SM$ = MID$ (S$,SI,1)
280 FOR SJ = 1 TO LEN (RM$)
290 LET SR$ = MID$ (RM$,SJ,1)
300 LET ST = SR$ < > SM$
310 IF ST THEN NEXT SJ
320 IF ST THEN SC$ = SC$ + SM$
330 NEXT SI
340 RETURN
</syntaxhighlight>
{{out}}
<pre>SH WS SOUL STRPPR. SH TOOK MY HRT!</pre>
 
=={{header|Arturo}}==
<syntaxhighlight lang="rebol">stripChars: function [str, chars]->
join select split str => [not? in? & split chars]
 
print stripChars "She was a soul stripper. She took my heart!" "aei"</syntaxhighlight>
 
{{out}}
 
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Asymptote}}==
<syntaxhighlight lang="asymptote">string text = "She was a soul stripper. She took my heart!";
string[][] remove = {{"a",""},{"e",""},{"i",""}};
 
for(var i : remove)
text = replace(text, remove);
}
write(text);</syntaxhighlight>
 
=={{header|AutoHotkey}}==
<langsyntaxhighlight AutoHotkeylang="autohotkey">MsgBox % stripchars("She was a soul stripper. She took my heart!","aei")
 
StripChars(string, charsToStrip){
Line 67 ⟶ 699:
StringReplace, string, string, % A_LoopField, , All
return string
}</langsyntaxhighlight>
{{out}}
Output:
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|AWK}}==
<syntaxhighlight lang="awk">#!/usr/bin/awk -f
<lang AWK>#!/usr/bin/awk -f
BEGIN {
x = "She was a soul stripper. She took my heart!";
Line 79 ⟶ 710:
gsub(/[aei]/,"",x);
print x;
}</langsyntaxhighlight>
{{out}}
<pre>She was a soul stripper. She took my heart!
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|BaCon}}==
Output:
<syntaxhighlight lang="bacon">text$ = "She was a soul stripper. She took my heart!"
PRINT text$
PRINT EXTRACT$(text$, "[aei]", TRUE)
</syntaxhighlight>
{{out}}
<pre>She was a soul stripper. She took my heart!
Sh ws soul strppr. Sh took my hrt!
Line 87 ⟶ 727:
 
=={{header|BASIC}}==
 
{{works with|QBasic}}
<syntaxhighlight lang="qbasic">DECLARE FUNCTION stripchars$(src AS STRING, remove AS STRING)
 
<lang qbasic>DECLARE FUNCTION stripchars$(src AS STRING, remove AS STRING)
 
PRINT stripchars$("She was a soul stripper. She took my heart!", "aei")
Line 108 ⟶ 746:
NEXT
stripchars$ = s
END FUNCTION</langsyntaxhighlight>
{{out}}
 
Output:
Sh ws soul strppr. Sh took my hrt!
 
==={{header|Chipmunk Basic}}===
{{works with|Chipmunk Basic|3.6.4}}
{{trans|BASIC}}
<syntaxhighlight lang="qbasic">100 cls
110 print stripchars$("She was a soul stripper. She took my heart!","aei")
120 sub stripchars$(src$,remove$)
130 s$ = src$
140 for l0 = 1 to len(remove$)
150 do
160 t = instr(s$,mid$(remove$,l0,1))
170 if t then
180 s$ = left$(s$,t-1)+mid$(s$,t+1)
190 else
200 exit do
210 endif
220 loop
230 next
240 stripchars$ = s$
250 end sub
260 end</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
==={{header|IS-BASIC}}===
<syntaxhighlight lang="is-basic">100 PROGRAM "Stripchr.bas"
110 PRINT STRIPCHARS$("She was a soul stripper. She took my heart!","aei")
120 DEF STRIPCHARS$(SRC$,REMOVE$)
130 LET T$=""
140 FOR I=1 TO LEN(SRC$)
150 LET L=0
160 FOR J=1 TO LEN(REMOVE$)
170 IF SRC$(I)=REMOVE$(J) THEN LET L=1:EXIT FOR
180 NEXT
190 IF L=0 THEN LET T$=T$&SRC$(I)
200 NEXT
210 LET STRIPCHARS$=T$
220 END DEF</syntaxhighlight>
 
==={{header|Sinclair ZX81 BASIC}}===
Works with 1k of RAM. Since the ZX81 character set includes neither lower case nor <tt>!</tt>, the test string is not quite identical to the one suggested in the specification.
<syntaxhighlight lang="basic"> 10 LET A$="SHE WAS A SOUL STRIPPER. SHE TOOK MY HEART."
20 LET B$="AEI"
30 GOSUB 60
40 PRINT C$
50 STOP
60 LET C$=""
70 FOR I=1 TO LEN A$
80 LET J=1
90 IF A$(I)=B$(J) THEN GOTO 130
100 LET J=J+1
110 IF J<=LEN B$ THEN GOTO 90
120 LET C$=C$+A$(I)
130 NEXT I
140 RETURN</syntaxhighlight>
{{out}}
<pre>SH WS SOUL STRPPR. SH TOOK MY HRT.</pre>
 
 
See also: [[#Liberty BASIC|Liberty BASIC]], [[#PureBasic|PureBasic]]
 
=={{header|BASIC256}}==
<syntaxhighlight lang="basic256">function stripchars(texto, remove)
s = texto
for i = 1 to length(remove)
s = replace(s, mid(remove, i, 1), "", true) #true se puede omitir
next i
 
return s
end function
 
print stripchars("She was a soul stripper. She took my heart!", "aei")</syntaxhighlight>
 
=={{header|BBC BASIC}}==
<syntaxhighlight lang="bbcbasic"> PRINT FNstripchars("She was a soul stripper. She took my heart!", "aei")
END
DEF FNstripchars(A$, S$)
LOCAL I%, C%, C$
FOR I% = 1 TO LEN(S$)
C$ = MID$(S$, I%, 1)
REPEAT
C% = INSTR(A$, C$)
IF C% A$ = LEFT$(A$, C%-1) + MID$(A$, C%+1)
UNTIL C% = 0
NEXT
= A$</syntaxhighlight>
Output:
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|BCPL}}==
<syntaxhighlight lang="bcpl">get "libhdr"
 
let contains(str, chr) = valof
$( for i = 1 to str%0
if str%i = chr resultis true
resultis false
$)
 
let stripchars(str, chars, buf) = valof
$( buf%0 := 0
for i = 1 to str%0
if ~contains(chars, str%i)
$( buf%0 := buf%0 + 1
buf%(buf%0) := str%i
$)
resultis buf
$)
 
let start() be
$( let buf = vec 127
writef("%S*N",
stripchars("She was a soul stripper. She took my heart!",
"aei",
buf))
$)</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|BQN}}==
The key function here is set difference, which is <code>(¬∘∊/⊣)</code>.
 
<syntaxhighlight lang="bqn"> StripChars ← (¬∘∊/⊣)
¬∘∊/⊣
"She was a soul stripper. She took my heart!" StripChars "aei"
"Sh ws soul strppr. Sh took my hrt!"</syntaxhighlight>
 
=={{header|Bracmat}}==
This solution handles Unicode (utf-8) characters. Optimizations are: (1) the <code>chars</code> string is hard-coded into the pattern before the pattern is used in the match expression, (2) the output characters are stacked (cheap) rather than appended (expensive). The result string is obtained by stringizing the stack and reversing. To make multibyte characters survive, they are reversed before being put onto the stack. A problem is that this code is negligent of diacritical marks.
<langsyntaxhighlight lang="bracmat">( ( strip
= string chars s pat
. !arg:(?string.?chars)
Line 139 ⟶ 902:
& out
$ (strip$("Аппетит приходит во время еды".веп)
);</langsyntaxhighlight>
{{out}}
Output:
<pre>Атит риходит о рмя ды</pre>
 
=={{header|Burlesque}}==
 
<syntaxhighlight lang="burlesque">
blsq ) "She was a soul stripper. She took my heart!"{"aei"\/~[n!}f[
"Sh ws soul strppr. Sh took my hrt!"
</syntaxhighlight>
 
=={{header|C}}==
<langsyntaxhighlight lang="c">#include <string.h>
#include <stdio.h>
#include <stdlib.h>
 
/* removes all chars from string */
char *strip_chars(const char *string, const char *chars)
{
char * newstr = malloc(strlen(string) + 1);
Line 172 ⟶ 942:
free(new);
return 0;
}</langsyntaxhighlight>
{{out|Result}}
 
Result:
 
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
===With table lookup===
<langsyntaxhighlight Clang="c">#include <stdio.h>
#include <stdlib.h>
#include <string.h>
 
char *strip(const char * str, const char *pat)
{
/* char replacement is typically done with lookup tables if
Line 197 ⟶ 965:
while (*pat != '\0') tbl[(int)*(pat++)] = 1;
 
char *ret = malloc(strlen(str) + 1);
do {
if (!tbl[(int)*str])
Line 216 ⟶ 984:
 
return 0;
}</langsyntaxhighlight>Output same as above.
 
==={{header|C++Gadget}}===
{{works with|C++11}}
<lang cpp>#include <algorithm>
#include <iostream>
#include <string>
 
<p>Gadget C-library:
std::string stripchars(std::string str, const std::string &chars)
[https://github.com/DanielStuardo/Gadget Gadget C-library in Github]
{
</p>
str.erase(
<syntaxhighlight lang="c">
std::remove_if(str.begin(), str.end(), [&](char c){
#include <gadget/gadget.h>
return chars.find(c) != std::string::npos;
}),
str.end()
);
return str;
}
 
LIB_GADGET_START
int main()
 
{
Main
std::cout << stripchars("She was a soul stripper. She took my heart!", "aei") << '\n';
String r, c = ".$%#\tEste@@@ mensaje será purgado!$$$", set = "$%#@.\t";
return 0;
}</lang>
Stack{
Output:
Store ( r, Char_del( Upper( c ), set ) );
}Stack_off
 
Print "Original = [%s]\nChar deleted = [%s]\n", c, r;
Free secure r,c,set;
End
</syntaxhighlight>
{{out}}
<pre>
Original = [.$%# Este@@@ mensaje será purgado!$$$]
Sh ws soul strppr. Sh took my hrt!
Char deleted = [ESTE MENSAJE SERÁ PURGADO!]
 
</pre>
 
=={{header|C sharp}}==
<syntaxhighlight lang="csharp">using System;
<lang C sharp>
using System;
 
public static string RemoveCharactersFromString(string testString, string removeChars)
Line 261 ⟶ 1,030:
}
return returnString;
}</syntaxhighlight>
}
</lang>
 
Usage:
<langsyntaxhighlight Clang="c sharp">
using System;
 
Line 277 ⟶ 1,044:
}
}
</syntaxhighlight>
</lang>
{{out}}
Output:
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
Using <code>Regex</code>:
 
<syntaxhighlight lang="c sharp">
Using Regex:
<lang C sharp>
using System;
using System.Text.RegularExpressions;
Line 290 ⟶ 1,056:
string pattern = "[" + removeChars + "]";
return Regex.Replace(testString, pattern, "");
}</langsyntaxhighlight>
 
<b>Alternative version</b> using <code>System.Span<T></code>:
<syntaxhighlight lang="csharp">using System;
 
public static System.ReadOnlySpan<T> RemoveItems<T>(System.Span<T> toStrip, System.ReadOnlySpan<T> toRemove)
where T : System.IEquatable<T>
{
var toIndex = toStrip.Length;
 
for (var fromIndex = toIndex - 1; fromIndex >= 0; fromIndex--)
if (toStrip[fromIndex] is var item && !toRemove.Contains(item))
toStrip[--toIndex] = item;
 
return toStrip.Slice(toIndex);
}</syntaxhighlight>
Usage:
<syntaxhighlight lang="csharp">using System;
 
class Program
{
static void Main(string[] args)
{
var stripString = "She was a soul stripper. She took my heart!";
var removeString = "aei";
System.Console.WriteLine(RemoveItems<char>(stripString.ToCharArray(), removeString).ToString());
}
}</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|C++}}==
{{works with|C++11}}
<syntaxhighlight lang="cpp">#include <algorithm>
#include <iostream>
#include <string>
 
std::string stripchars(std::string str, const std::string &chars)
{
str.erase(
std::remove_if(str.begin(), str.end(), [&](char c){
return chars.find(c) != std::string::npos;
}),
str.end()
);
return str;
}
 
int main()
{
std::cout << stripchars("She was a soul stripper. She took my heart!", "aei") << '\n';
return 0;
}</syntaxhighlight>
{{out}}
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|Clojure}}==
<syntaxhighlight lang="clojure">(defn strip [coll chars]
(apply str (remove #((set chars) %) coll)))
 
(strip "She was a soul stripper. She took my heart!" "aei")
;; => "Sh ws soul strppr. Sh took my hrt!"</syntaxhighlight>
 
=={{header|CLU}}==
<syntaxhighlight lang="clu">stripchars = proc (input, chars: string) returns (string)
result: array[char] := array[char]$[]
for c: char in string$chars(input) do
if string$indexc(c, chars) = 0 then
array[char]$addh(result, c)
end
end
return(string$ac2s(result))
end stripchars
 
start_up = proc ()
po: stream := stream$primary_output()
stream$putl(po,
stripchars("She was a soul stripper. She took my heart!", "aei"))
end start_up</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|COBOL}}==
This function takes the two arguments as specified in the task. However, the result will be returned in the string that had the characters stripped from it, and the string containing the characters to strip must be null-terminated (otherwise, a table would have to be used instead).
<syntaxhighlight lang="cobol"> IDENTIFICATION DIVISION.
PROGRAM-ID. Strip-Chars.
 
DATA DIVISION.
WORKING-STORAGE SECTION.
01 Str-Size CONSTANT 128.
 
LOCAL-STORAGE SECTION.
01 I PIC 999.
01 Str-Pos PIC 999.
 
01 Offset PIC 999.
01 New-Pos PIC 999.
 
01 Str-End PIC 999.
 
LINKAGE SECTION.
01 Str PIC X(Str-Size).
01 Chars-To-Replace PIC X(256).
 
PROCEDURE DIVISION USING Str BY VALUE Chars-To-Replace.
Main.
PERFORM VARYING I FROM 1 BY 1
UNTIL Chars-To-Replace (I:1) = X"00"
 
MOVE ZERO TO Offset
 
* *> Overwrite the characters to remove by left-shifting
* *> following characters over them.
PERFORM VARYING Str-Pos FROM 1 BY 1
UNTIL Str-Size < Str-Pos
IF Str (Str-Pos:1) = Chars-To-Replace (I:1)
ADD 1 TO Offset
ELSE IF Offset NOT = ZERO
COMPUTE New-Pos = Str-Pos - Offset
MOVE Str (Str-Pos:1) TO Str (New-Pos:1)
END-IF
END-PERFORM
* *> Move spaces to characters at the end that have been
* *> shifted over.
COMPUTE Str-End = Str-Size - Offset
MOVE SPACES TO Str (Str-End:Offset)
END-PERFORM
 
GOBACK
.</syntaxhighlight>
 
=={{header|ColdFusion}}==
<syntaxhighlight lang="cfm">
<Cfset theString = 'She was a soul stripper. She took my heart!'>
<Cfset theStrip = 'aei'>
<Cfloop from="1" to="#len(theStrip)#" index="i">
<cfset theString = replace(theString, Mid(theStrip, i, 1), '', 'all')>
</Cfloop>
<Cfoutput>#theString#</Cfoutput>
</syntaxhighlight>
 
=={{header|Common Lisp}}==
<langsyntaxhighlight lang="lisp">(defun strip-chars (str chars)
(remove-if (lambda (ch) (find ch chars)) str))
 
(strip-chars "She was a soul stripper. She took my heart!" "aei")
;; => "Sh ws soul strppr. Sh took my hrt!"
 
</lang>
;; strip whitespace:
(string-trim
'(#\Space #\Newline #\Backspace #\Tab
#\Linefeed #\Page #\Return #\Rubout)
" A string ")
;; => "A string"
</syntaxhighlight>
 
=={{header|D}}==
This example shows both the functional and regex solutions.
<lang d>import std.stdio, std.string;
<syntaxhighlight lang="d">import std.stdio;
 
string stripchars(string s, string chars) {
import std.algorithm;
import std.conv;
return s.filter!(c => !chars.count(c)).to!string;
}
 
string stripchars2(string s, string chars) {
import std.regex;
return replaceAll(s, regex("[" ~ chars ~ "]"), "");
}
 
void main() {
autostring s = "She was a soul stripper. She took my heart!";
string chars = "aei";
auto ss = "Sh ws soul strppr. Sh took my hrt!";
 
assert(s.removechars("aei") == ss);
writeln(stripchars(s, chars));
}</lang>
writeln(stripchars2(s, chars));
}</syntaxhighlight>
 
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!
Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Delphi}}==
<langsyntaxhighlight Delphilang="delphi">program StripCharacters;
 
{$APPTYPE CONSOLE}
Line 329 ⟶ 1,263:
Writeln(TEST_STRING);
Writeln(StripChars(TEST_STRING, 'aei'));
end.</langsyntaxhighlight>
 
=={{header|Draco}}==
<syntaxhighlight lang="draco">\util.g
 
proc nonrec stripchars(*char str, chars, outbuf) *char:
channel input text ch_in;
channel output text ch_out;
[2]char cur = ('\e', '\e');
open(ch_in, str);
open(ch_out, outbuf);
while read(ch_in; cur[0]) do
if CharsIndex(chars, &cur[0]) = -1 then
write(ch_out; cur[0])
fi
od;
close(ch_in);
close(ch_out);
outbuf
corp
 
proc nonrec main() void:
[128]char buf;
writeln(
stripchars("She was a soul stripper. She took my heart!",
"aei", &buf[0]))
corp</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|EasyLang}}==
 
<syntaxhighlight>
func$ strip s$ del$ .
for c$ in strchars s$
if strpos del$ c$ <> 0
c$ = ""
.
r$ &= c$
.
return r$
.
print strip "She was a soul stripper. She took my heart!" "aei"
</syntaxhighlight>
 
=={{header|EchoLisp}}==
<syntaxhighlight lang="scheme">
;; using regexp /[chars]/g
 
(define (strip-chars string chars)
(string-replace string (string-append "/[" chars "]/g") ""))
 
(strip-chars "She was a soul stripper. She took my heart!" "aei")
→ "Sh ws soul strppr. Sh took my hrt!"
</syntaxhighlight>
 
=={{header|Elena}}==
ELENA 4.x :
<syntaxhighlight lang="elena">import extensions;
import extensions'text;
import system'routines;
public program()
{
var testString := "She was a soul stripper. She took my heart!";
var removeChars := "aei";
console.printLine(testString.filterBy::(ch => removeChars.indexOf(0, ch) == -1).summarize(new StringWriter()))
}</syntaxhighlight>
{{out}}
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|Elixir}}==
The easiest solution would be to use replace from the String module, which takes a Regex.
<syntaxhighlight lang="elixir">str = "She was a soul stripper. She took my heart!"
String.replace(str, ~r/[aei]/, "")
# => Sh ws soul strppr. Sh took my hrt!</syntaxhighlight>
 
To get the desired interface, we just have to dynamically construct the Regex:
<syntaxhighlight lang="elixir">defmodule RC do
def stripchars(str, chars) do
String.replace(str, ~r/[#{chars}]/, "")
end
end
 
str = "She was a soul stripper. She took my heart!"
RC.stripchars(str, "aei")
# => Sh ws soul strppr. Sh took my hrt!</syntaxhighlight>
 
=={{header|Emacs Lisp}}==
<syntaxhighlight lang="lisp">
(defun stripchars (s chars)
(seq-into
(seq-filter (lambda (x) (not (seq-contains chars x))) s)
'string))
 
(stripchars "She was a soul stripper. She took my heart!" "aei")
</syntaxhighlight>
 
{{out}}
 
<pre>
"Sh ws soul strppr. Sh took my hrt!"
</pre>
 
=={{header|Erlang}}==
The function is created in the shell. A module would be over engineering.
 
{{out}}
<pre>
4> F = fun(To_stripp, Strip_with) -> lists:filter( fun(C) -> not lists:member(C, Strip_with) end, To_stripp ) end.
#Fun<erl_eval.12.111823515>
5> F("She was a soul stripper. She took my heart!", "aei").
"Sh ws soul strppr. Sh took my hrt!"
</pre>
 
=={{header|Euphoria}}==
{{works with|Euphoria|4.0.3, 4.0.0 RC1 and later}}
The includes use Euphoria 4 standard library files.
A sequence called <tt>originalString</tt> holds the text to be converted.
The '<code>puts'</code> function is for console output.
The work of this task is done by the <code>transmute</code> function; this function takes parameters separated by commas. Here it uses 3 parameters, up to 5, the other two are optional and aren't put in this time.
The <code>transmute</code> function's usage and examples can be searched for in the official Euphoria 4.0.0+ manual. Euphoria object identifiers (names) are case sensitive but don't need to be in a particular case to be recognized as an object type.
This function takes parameters separated by commas. Here it uses 3 parameters, up to 5, the other two are optional and aren't put in this time.
<syntaxhighlight lang="euphoria">include std\sequence.e
The transmute function's usage and examples can be searched for in the official Euphoria 4.0.0+ manual. Euphoria object identifiers (names) are case sensitive but don't need to be in a particular case to be recognized as an object type.
<lang euphoria>include std\sequence.e
include std\console.e
 
Line 346 ⟶ 1,396:
originalString = transmute(originalString, {{} , "a", "e", "i"}, {{} , "", "", ""})
puts(1,"After : " & originalString & "\n")
any_key()</syntaxhighlight>
{{out}}
</lang>
Output:
<pre>Before : She was a soul stripper. She took my heart!
After : Sh ws soul strppr. Sh took my hrt!
Press Any Key to continue...</pre>
 
=={{header|Excel}}==
===LAMBDA===
 
Binding the name '''exceptChars''' to the following lambda expression in the Name Manager of the Excel WorkBook:
 
(See [https://www.microsoft.com/en-us/research/blog/lambda-the-ultimatae-excel-worksheet-function/ LAMBDA: The ultimate Excel worksheet function])
 
{{Works with|Office 365 betas 2021}}
<syntaxhighlight lang="lisp">exceptChars
=LAMBDA(excluded,
LAMBDA(src,
CONCAT(
FILTERP(
LAMBDA(c,
ISERROR(
FIND(c, excluded, 1)
)
)
)(
CHARSROW(src)
)
)
)
)</syntaxhighlight>
 
and also assuming the following generic bindings in the Name Manager for the WorkBook:
 
<syntaxhighlight lang="lisp">CHARSROW
=LAMBDA(s,
MID(s,
SEQUENCE(1, LEN(s), 1, 1),
1
)
)
 
 
FILTERP
=LAMBDA(p,
LAMBDA(xs,
FILTER(xs, p(xs))
)
)</syntaxhighlight>
 
{{Out}}
{| class="wikitable"
|-
|||style="text-align:right; font-family:serif; font-style:italic; font-size:120%;"|fx
! colspan="2" style="text-align:left; vertical-align: bottom; font-family:Arial, Helvetica, sans-serif !important;"|=exceptChars(A2)(B1)
|- style="text-align:center; font-family:Arial, Helvetica, sans-serif !important; background-color:#000000; color:#ffffff;"
|
| A
| B
|-
| style="text-align:center; font-family:Arial, Helvetica, sans-serif !important; background-color:#000000; color:#ffffff" | 1
|
| She was a soul stripper. She took my heart!
|-
| style="text-align:center; font-family:Arial, Helvetica, sans-serif !important; background-color:#000000; color:#ffffff" | 2
| aei
| style="background-color:#cbcefb" | Sh ws soul strppr. Sh took my hrt!
|}
 
=={{header|F_Sharp|F#}}==
<syntaxhighlight lang="fsharp">
let stripChars text (chars:string) =
Seq.fold (
fun (s:string) c -> s.Replace(c.ToString(),"")
) text chars
printfn "%s" (stripChars "She was a soul stripper. She took my heart!" "aei")
</syntaxhighlight>
{{out}}
<pre>
Sh ws soul strppr. Sh took my hrt!</pre>
</pre>
 
=={{header|Factor}}==
<syntaxhighlight lang="factor">without</syntaxhighlight>
Example:
<syntaxhighlight lang="factor">USE: sets
"She was a soul stripper. She took my heart!" "aei" without print</syntaxhighlight>
{{out}}
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|Forth}}==
Forth is a low level language that is extended to solve your problem.
Here we add APPEND-CHAR to the language and use it built the new string
character by character in a memory buffer called PAD. PAD is a standard Forth word.
SCAN is common in most Forth systems and is typically coded in Forth assembler
<syntaxhighlight lang="forth">: append-char ( char str -- ) dup >r count dup 1+ r> c! + c! ; \ append char to a counted string
: strippers ( -- addr len) s" aeiAEI" ; \ a string literal returns addr and length
 
: stripchars ( addr1 len1 addr2 len2 -- PAD len )
0 PAD c! \ clear the PAD buffer
bounds \ calc loop limits for addr2
DO
2dup I C@ ( -- addr1 len1 addr1 len1 char)
scan nip 0= \ scan for char in addr1, test for zero
IF \ if stack = true (ie. NOT found)
I c@ PAD append-char \ fetch addr2 char, append to PAD
THEN \ ...then ... continue the loop
LOOP
2drop \ we don't need STRIPPERS now
PAD count ; \ return PAD address and length
</syntaxhighlight>
Test at the forth console
<pre>strippers s" She was a soul stripper. She took my heart!" stripchars cr type
Sh ws soul strppr. Sh took my hrt! ok
</pre>
 
===Shorter version, using ]] [[ macros===
This shorter version removes creating a new string and prints the "stripped" string immediately.
The macro called '?exit' speeds up the '.stripped' print loop by compiling its code inside the loop.
<syntaxhighlight lang="forth">: ?exit ( c1 c2 -- ) ]] = if drop unloop exit then [[ ; immediate
: .stripped ( a u c -- ) -rot bounds ?do dup i c@ ?exit loop emit ;
: stripchars ( a1 u1 a2 u2 -- ) bounds ?do 2dup i c@ .stripped loop 2drop ;
 
: "aei" s" aei" ;
 
\ usage: "aei" s" She was a soul stripper. She took my heart!" stripchars</syntaxhighlight>
 
=={{header|Fortran}}==
<langsyntaxhighlight Fortranlang="fortran">elemental subroutine strip(string,set)
character(len=*), intent(inout) :: string
character(len=*), intent(in) :: set
Line 370 ⟶ 1,541:
end if
end do
end subroutine strip</langsyntaxhighlight>Note: Since strip is an elemental subroutine, it can be called with arrays of strings as well.
 
=={{header|FreeBASIC}}==
<syntaxhighlight lang="freebasic">' FB 1.05.0 Win64
 
Function stripChars(s As Const String, chars As Const String) As String
If s = "" Then Return ""
Dim count As Integer = 0
Dim strip(0 To Len(s) - 1) As Boolean
For i As Integer = 0 To Len(s) - 1
For j As Integer = 0 To Len(chars) - 1
If s[i] = chars[j] Then
count += 1
strip(i) = True
Exit For
End If
Next j
Next i
 
Dim buffer As String = Space(Len(s) - count)
count = 0
For i As Integer = 0 To Len(s) - 1
If Not Strip(i) Then
buffer[count] = s[i]
count += 1
End If
Next
Return buffer
End Function
 
Dim s As String = "She was a soul stripper. She took my heart!"
Dim chars As String = "aei"
Print stripChars(s, chars)
Print
Print "Press any key to quit"
Sleep</syntaxhighlight>
 
{{out}}
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|Frink}}==
<syntaxhighlight lang="frink">stripchars[str, remove] :=
{
set = toSet[chars[remove]]
return char[remove[char[str], {|c, set| set.contains[c]}, set]]
}
 
println[stripchars["She was a soul stripper. She took my heart!","aei"]]
</syntaxhighlight>
{{out}}
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|Fōrmulæ}}==
 
{{FormulaeEntry|page=https://formulae.org/?script=examples/Strip_a_set_of_characters_from_a_string}}
 
'''Solution'''
 
[[File:Fōrmulæ - Strip a set of characters from a string 01.png]]
 
'''Test case'''
 
[[File:Fōrmulæ - Strip a set of characters from a string 02.png]]
 
[[File:Fōrmulæ - Strip a set of characters from a string 03.png]]
 
=={{header|FutureBasic}}==
<syntaxhighlight lang="futurebasic">window 1, @"Strip a set of characters from a string"
 
local fn StringByStrippingCharacters( string as CFStringRef, chrs as CFStringRef ) as CFStringRef
end fn = fn ArrayComponentsJoinedByString( fn StringComponentsSeparatedByCharactersInSet( string, fn CharacterSetWithCharactersInString( chrs ) ), @"" )
 
CFStringRef string, chrs
 
string = @"She was a soul stripper. She took my heart!"
chrs = @"aei"
 
print string
print fn StringByStrippingCharacters( string, chrs )
 
HandleEvents</syntaxhighlight>
{{out}}
<pre>
She was a soul stripper. She took my heart!
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|Gambas}}==
'''[https://gambas-playground.proko.eu/?gist=f199a8f7a56cf466e4a16c3fc71f6278 Click this link to run this code]'''
<syntaxhighlight lang="gambas">Public Sub Main()
 
Print StripChars("She was a soul stripper. She took my heart!", "aei")
 
End
'_____________________________________________________________________
Public Sub StripChars(sText As String, sRemove As String) As String
Dim siCount As Short
 
For siCount = 1 To Len(sRemove)
sText = Replace(sText, Mid(sRemove, siCount, 1), "")
Next
 
Return sText
 
End</syntaxhighlight>
Output:
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|Go}}==
<langsyntaxhighlight lang="go">package main
 
import (
Line 392 ⟶ 1,675:
fmt.Println(stripchars("She was a soul stripper. She took my heart!",
"aei"))
}</langsyntaxhighlight>
{{out}}
Output:
<pre>
Sh ws soul strppr. Sh took my hrt!
Line 400 ⟶ 1,683:
=={{header|Groovy}}==
Solution:
<langsyntaxhighlight lang="groovy">def stripChars = { string, stripChars ->
def list = string as List
list.removeAll(stripChars as List)
list.join()
}</langsyntaxhighlight>
 
Test:
<langsyntaxhighlight lang="groovy">println (stripChars('She was a soul stripper. She took my heart!', 'aei'))</langsyntaxhighlight>
{{out}}
 
Output:
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Haskell}}==
I decided to make the string the second argument and the characters the first argument, because it is more likely for someone to partially apply the characters to be stripped (making a function that strips certain characters), than the string.
<langsyntaxhighlight lang="haskell">stripChars :: String -> String -> String
stripChars = filter . flip notElem</langsyntaxhighlight>
{{out|Testing in GHCI}}
 
testing in GHCI:
 
<pre>> stripChars "aei" "She was a soul stripper. She took my heart!"
"Sh ws soul strppr. Sh took my hrt!"</pre>
Line 424 ⟶ 1,703:
=={{header|Icon}} and {{header|Unicon}}==
The following works in both languages:
<langsyntaxhighlight lang="unicon">procedure main(A)
cs := \A[1] | 'aei' # argument is set of characters to strip
every write(stripChars(!&input, cs)) # strip all input lines
Line 431 ⟶ 1,710:
procedure stripChars(s,cs)
ns := ""
s ? while ns ||:= (not pos(0), tab(upto(cs)|0)) do tab(many(cs)))
return ns
end</langsyntaxhighlight>
{{out|Sample runs}}
 
Sample runs:
<pre>->strip
She was a soul stripper. She took my heart!
Line 445 ⟶ 1,723:
rdvrks r nt trs.
-></pre>
 
=={{header|Insitux}}==
{{Trans|Clojure}}
<syntaxhighlight lang="insitux">(function strip from what
(remove (to-vec what) from))
 
(strip "She was a soul stripper. She took my heart!" "aei")
;returns "Sh ws soul strppr. Sh took my hrt!"</syntaxhighlight>
 
=={{header|J}}==
'''Solution:'''<br>
The dyadic primitive <code>-.</code> ([http://www.jsoftware.com/help/dictionary/d121.htm Less]) is probably the simplest way to solve this task.
{{out|Example Usage}}
 
<syntaxhighlight lang="j"> 'She was a soul stripper. She took my heart!' -. 'aei'
'''Example Usage:'''
<langSh j>ws 'She was a soul stripperstrppr. SheSh took my hearthrt!' -. 'aei'</syntaxhighlight>
Sh ws soul strppr. Sh took my hrt!</lang>
 
=={{header|Java}}==
The most basic approach is to use the ''String.replace'' method.
<lang Java>class StripChars {
<syntaxhighlight lang="java">
public static String stripChars(String inString, String toStrip) {
String stripCharacters(String string, String characters) {
return inString.replaceAll("[" + toStrip + "]", "");
for (char character : characters.toCharArray())
string = string.replace(String.valueOf(character), "");
return string;
}
</syntaxhighlight>
You could also use a ''StringBuilder'' which provides a ''deleteCharAt'' method.
<syntaxhighlight lang="java">
String stripCharacters(String string, String characters) {
StringBuilder stripped = new StringBuilder(string);
/* traversing the string backwards is necessary to avoid collision */
for (int index = string.length() - 1; index >= 0; index--) {
if (characters.contains(String.valueOf(string.charAt(index))))
stripped.deleteCharAt(index);
}
return stripped.toString();
}
</syntaxhighlight>
You could use the ''String.replaceAll'' method, which takes a regular expression as it's first argument.
<syntaxhighlight lang="java">
static String stripCharacters(String string, String characters) {
/* be sure to 'quote' the 'characters' to avoid pattern collision */
characters = Pattern.quote(characters);
string = string.replaceAll("[%s]".formatted(characters), "");
return string;
}
</syntaxhighlight>
These will all produce the following string.
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
public static void main(String[] args) {
String sentence = "She was a soul stripper. She took my heart!";
String chars = "aei";
System.out.println("sentence: " + sentence);
System.out.println("to strip: " + chars);
System.out.println("stripped: " + stripChars(sentence, chars));
}
}</lang>
 
output:
<pre>sentence: She was a soul stripper. She took my heart!
to strip: aei
stripped: Sh ws soul strppr. Sh took my hrt!</pre>
=={{header|JavaScript}}==
 
<lang JavaScript>function stripchars(string, chars) {
===ES5===
 
<syntaxhighlight lang="javascript">function stripchars(string, chars) {
return string.replace(RegExp('['+chars+']','g'), '');
}</langsyntaxhighlight>
 
=={{header|Logo}}=ES6===
<lang logo>to strip :string :chars
output filter [not substringp ? :chars] :string
end
 
Reversing the order of the arguments, to simplify any currying:
print strip "She\ was\ a\ soul\ stripper.\ She\ took\ my\ heart! "aei
 
<syntaxhighlight lang="javascript">(() => {
bye</lang>
'use strict';
 
// stripChars :: String -> String -> String
output:
const stripChars = (strNeedles, strHayStack) =>
<pre>Sh ws soul strppr. Sh took my hrt!
strHayStack.replace(RegExp(`[${strNeedles}]`, 'g'), '');
 
// GENERIC FUNCTION
 
// curry :: ((a, b) -> c) -> a -> b -> c
const curry = f => a => b => f(a, b);
 
// TEST FUNCTION
 
const noAEI = curry(stripChars)('aeiAEI');
 
// TEST
return noAEI('She was a soul stripper. She took my heart!');
 
// 'Sh ws soul strppr. Sh took my hrt!'
})();</syntaxhighlight>
 
{{Out}}
<pre>'Sh ws soul strppr. Sh took my hrt!'</pre>
 
Alternatively, we could also do this without a regex:
 
<syntaxhighlight lang="javascript">(() => {
'use strict';
 
// stripChars :: String -> String -> String
const stripChars = (strNeedles, strHayStack) =>
strHayStack.split('')
.filter(x => !elem(x, strNeedles))
.join('');
 
// GENERIC FUNCTIONS
 
// elem :: Eq a => a -> [a] -> Bool
const elem = (x, xs) => xs.indexOf(x) !== -1;
 
// curry :: ((a, b) -> c) -> a -> b -> c
const curry = f => a => b => f(a, b);
 
// TEST FUNCTION
 
const noAEI = curry(stripChars)('aeiAEI');
 
// TEST
return noAEI('She was a soul stripper. She took my heart!');
 
// 'Sh ws soul strppr. Sh took my hrt!'
})();</syntaxhighlight>
 
{{Out}}
<pre>'Sh ws soul strppr. Sh took my hrt!'</pre>
 
=={{header|Joy}}==
<syntaxhighlight lang="joy">DEFINE stripchars == [in not] cons filter.
 
"She was a soul stripper. She took my heart!" "aei" stripchars.</syntaxhighlight>
{{out}}
<pre>"Sh ws soul strppr. Sh took my hrt!"</pre>
 
=={{header|jq}}==
<syntaxhighlight lang="jq">def stripchars(string; banish):
(string | explode) - (banish | explode) | implode;</syntaxhighlight>
'''Note''': In jq, it would be more idiomatic to define the function as a filter:
<syntaxhighlight lang="jq">def stripchars(banish):
explode - (banish | explode) | implode;</syntaxhighlight>
In this case, we would write:
"She was a soul stripper. She took my heart!" | stripchars("aei")
 
=={{header|Julia}}==
{{works with|Julia|1.0}}
 
<syntaxhighlight lang="julia">stripChar = (s, r) -> replace(s, Regex("[$r]") => "")</syntaxhighlight>
 
{{out}}
<pre>> stripChar("She was a soul stripper. She took my heart!", "aei")
Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|K}}==
<syntaxhighlight lang="k">"She was a soul stripper. She took my heart!" ^ "aei"</syntaxhighlight>
{{out}}
<pre>"Sh ws soul strppr. Sh took my hrt!"</pre>
 
=={{header|Kotlin}}==
<syntaxhighlight lang="kotlin">fun stripChars(s: String, r: String) = s.filter { it !in r }
 
fun main(args: Array<String>) {
println(stripChars("She was a soul stripper. She took my heart!", "aei"))
}</syntaxhighlight>
 
{{out}}
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|LuaLambdatalk}}==
Text substitutions are easy to process directly using regular expressions :
<lang lua>function stripchars( str, chr )
<syntaxhighlight lang="scheme">
local s = ""
{S.replace (a|e|i)
for g in str:gmatch( "[^"..chr.."]" ) do
by // nothing
s = s .. g
in She was a soul stripper. She took my heart!}
end
-> Sh ws soul strppr. Sh took my hrt!
return s
</syntaxhighlight>
end
and can be wrapped inside a fuction:
<syntaxhighlight lang="scheme">
{def word2rex
{def word2rex.r
{lambda {:w}
{if {W.empty? {W.rest :w}}
then {W.first :w})
else {W.first :w}|{word2rex.r {W.rest :w}}}}}
{lambda {:w :s}
{S.replace ({word2rex.r :w} by in :s}}}
-> word2rex
 
{word2rex aei
print( stripchars( "She was a soul stripper. She took my heart!", "aei" ) )</lang>
She was a soul stripper. She took my heart!}
-> Sh ws soul strppr. Sh took my hrt!
</syntaxhighlight>
 
=={{header|Lasso}}==
<syntaxhighlight lang="lasso">define stripper(in::string,destroy::string) => {
with toremove in #destroy->values do => {
#in->replace(#toremove,'')
}
return #in
}
stripper('She was a soul stripper. She took my heart!','aei')</syntaxhighlight>
 
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Liberty BASIC}}==
<syntaxhighlight lang="lb">Print stripchars$("She was a soul stripper. She took my heart!", "aei", 1)
<lang lb>
Print stripchars$("She was a soul stripper. She took my heart!", "aei", 1)
End
 
Line 514 ⟶ 1,934:
Next i
If (num <= Len(chars$)) Then stripchars$ = stripchars$(stripchars$, chars$, (num + 1))
End Function </syntaxhighlight>
 
=={{header|LiveCode}}==
<syntaxhighlight lang="livecode">function stripChars str charlist
local strstripped
put str into strstripped
repeat for each char c in charlist
replace c with empty in strstripped
end repeat
return strstripped
end stripChars</syntaxhighlight>
Test<syntaxhighlight lang="livecode">command teststripchars
put stripchars("She was a soul stripper. She took my heart!","aei")
end teststripchars</syntaxhighlight>Output<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Logo}}==
<syntaxhighlight lang="logo">to strip :string :chars
output filter [not substringp ? :chars] :string
end
 
print strip "She\ was\ a\ soul\ stripper.\ She\ took\ my\ heart! "aei
 
bye</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Lua}}==
<syntaxhighlight lang="lua">
function stripchars(str, chrs)
local s = str:gsub("["..chrs:gsub("%W","%%%1").."]", '')
return s
end
print( stripchars( "She was a soul stripper. She took my heart!", "aei" ) )
</lang>
--> Sh ws soul strppr. Sh took my hrt!
=={{header|Mathematica}}==
print( stripchars( "She was a soul stripper. She took my heart!", "a-z" ) )
<lang Mathematica>stripchars[a_,b_]:=StringReplace[a,(#->"")&/@Characters[b]]
--> She ws soul stripper. She took my hert!
</syntaxhighlight>
 
=={{header|Maple}}==
<syntaxhighlight lang="maple">with(StringTools):
 
Remove(c->Has("aei",c), "She was a soul stripper. She took my heart!");</syntaxhighlight>
Output:
<pre> "Sh ws soul strppr. Sh took my hrt!"</pre>
 
=={{header|Mathematica}}/{{header|Wolfram Language}}==
<syntaxhighlight lang="mathematica">stripchars[a_,b_]:=StringReplace[a,(#->"")&/@Characters[b]]
stripchars["She was a soul stripper. She took my heart!","aei"]
->Sh ws soul strppr. Sh took my hrt!</langsyntaxhighlight>
 
=={{header|MATLAB}} / {{header|Octave}}==
<syntaxhighlight lang MATLAB="matlab"> function str = stripchars(str, charlist)
% MATLAB charlistafter 2016b: str = uniqueerase(str, charlist);
str(ismember(str, charlist)) = '';</syntaxhighlight>
for k=1:length(charlist)
{{out}}
str(str==charlist(k)) = [];
<pre> >> stripchars('She was a soul stripper. She took my heart!','aei')
end;
end; </lang>
 
<pre> >>stripchars('She was a soul stripper. She took my heart!','aei')
ans = Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Nanoquery}}==
<syntaxhighlight lang="nanoquery">def stripchars(string, chars)
for char in chars
string = string.replace(char, "")
end
return string
end</syntaxhighlight>
 
=={{header|Nemerle}}==
<langsyntaxhighlight Nemerlelang="nemerle">StripChars( text : string, remove : string ) : string
{
def chuck = Explode(remove);
Concat( "", Split(text, chuck))
}</langsyntaxhighlight>
 
=={{header|NetRexx}}==
<langsyntaxhighlight NetRexxlang="netrexx">/* NetRexx */
 
options replace format comments java crossref savelog symbols
Line 556 ⟶ 2,024:
end c_
 
return haystack</syntaxhighlight>
 
</lang>
=={{header|NewLISP}}==
<syntaxhighlight lang="newlisp">(let (sentence "She was a soul stripper. She took my heart!")
(replace "[aei]" sentence "" 0))</syntaxhighlight>
 
=={{header|Nim}}==
<syntaxhighlight lang="nim">import strutils
 
echo "She was a soul stripper. She took my heart!".split({'a','e','i'}).join()
 
echo "She was a soul stripper. She took my heart!".multiReplace(
("a", ""),
("e", ""),
("i", "")
)
 
# And another way using module "sequtils".
import sequtils
echo "She was a soul stripper. She took my heart!".filterIt(it notin "aei").join()
 
</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!
Sh ws soul strppr. Sh took my hrt!
Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Objective-C}}==
{{works with|Mac OS X|10.5+}}
{{works with|iOS|1.0}}
<langsyntaxhighlight lang="objc">@interface NSString (StripCharacters)
- (NSString *) stripCharactersInSet: (NSCharacterSet *) chars;
@end
Line 570 ⟶ 2,062:
return [[self componentsSeparatedByCharactersInSet:chars] componentsJoinedByString:@""];
}
@end</langsyntaxhighlight>
{{out|To use}}
 
<syntaxhighlight lang="objc"> NSString *aString = @"She was a soul stripper. She took my heart!";
To use:
<lang objc> NSString *aString = @"She was a soul stripper. She took my heart!";
NSCharacterSet* chars = [NSCharacterSet characterSetWithCharactersInString:@"aei"];
 
// Display the NSString.
NSLog(@"%@", [aString stripCharactersInSet:chars]);</langsyntaxhighlight>
 
=={{header|OCaml}}==
<syntaxhighlight lang="ocaml">let stripchars s cs =
 
<lang ocaml>let stripchars s cs =
let len = String.length s in
let res = StringBytes.create len in
let rec aux i j =
if i >= len then String.sub res 0 j
then Bytes.to_string (Bytes.sub res 0 j)
else if String.contains cs s.[i] then
aux (succ i) (j)
else begin
resBytes.[j]set <-res j s.[i];
aux (succ i) (succ j)
end
in
aux 0 0</langsyntaxhighlight>
{{out|Testing in the toplevel}}
 
testing in the toplevel:
 
<pre># stripchars "She was a soul stripper. She took my heart!" "aei" ;;
- : string = "Sh ws soul strppr. Sh took my hrt!"</pre>
 
=={{header|Oforth}}==
 
<syntaxhighlight lang="oforth">String method: stripChars(str) #[ str include not ] self filter ;
 
"She was a soul stripper. She took my heart!" stripChars("aei") println</syntaxhighlight>
 
{{out}}
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|PARI/GP}}==
GP should not be used for string manipulation. A good solution to this problem would probably involve <code>system("perl -e</code>...
<langsyntaxhighlight lang="parigp">stripchars(s, bad)={
bad=Set(Vec(Vecsmall(bad)));
s=Vecsmall(s);
Line 609 ⟶ 2,109:
Strchr(v)
};
stripchars("She was a soul stripper. She took my heart!","aei")</langsyntaxhighlight>
 
=={{header|Pascal}}==
See [[Strip_a_set_of_characters_from_a_string#Delphi | Delphi]]
 
=={{header|Perl}}==
Note: this example uses a regular expression character class. Certain characters, like hyphens and brackets, may need to be escaped.
<langsyntaxhighlight lang="perl">sub stripchars {
my ($s, $chars) = @_;
$s =~ s/[$chars]//g;
Line 622 ⟶ 2,122:
}
 
print stripchars("She was a soul stripper. She took my heart!", "aei"), "\n";</langsyntaxhighlight>
{{out}}
Output:
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
Another good option for stripping characters is to use the <code>tr///</code> operator. This option is very efficient when the set of characters to strip is fixed at compile time, because <code>tr///</code> is specifically designed for transforming and deleting characters. Note that hyphens also have special meaning in this case.
<langsyntaxhighlight lang="perl">$str =~ tr/aei//d;</langsyntaxhighlight>
 
Since the characters used for <code>tr///</code> must be fixed at compile time, unfortunately, it requires the use of an <code>eval</code> to do this generally for any set of characters provided at runtime:
<langsyntaxhighlight lang="perl">sub stripchars {
my ($s, $chars) = @_;
eval("\$s =~ tr/$chars//d;");
return $s;
}</langsyntaxhighlight>
 
=={{header|Perl 6Phix}}==
{{libheader|Phix/basics}}
<lang perl6>sub strip_chars ( $s, $chars ) {
<!--<syntaxhighlight lang="phix">-->
return $s.trans( $chars.comb X=> '' );
<span style="color: #0000FF;">?</span><span style="color: #7060A8;">filter</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"She was a soul stripper. She took my heart!"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"out"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"aei"</span><span style="color: #0000FF;">)</span>
}
<!--</syntaxhighlight>-->
 
{{out}}
say strip_chars( 'She was a soul stripper. She took my heart!', 'aei' );</lang>
<pre>
 
Output:<pre>"Sh ws soul strppr. Sh took my hrt!</pre>"
</pre>
 
=={{header|PHP}}==
<langsyntaxhighlight lang="php"><?php
function stripchars($s, $chars) {
return str_replace(str_split($chars), "", $s);
Line 654 ⟶ 2,153:
 
echo stripchars("She was a soul stripper. She took my heart!", "aei"), "\n";
?></langsyntaxhighlight>
{{out}}
Output:
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|Picat}}==
===List comprehension===
<syntaxhighlight lang="picat">stripchars(String, Chars) = [C : C in String, not(membchk(C,Chars))].</syntaxhighlight>
 
===Recursion===
<syntaxhighlight lang="picat">stripchars2(String,Chars, Res) =>
stripchars2(String, Chars, [], Res).
 
stripchars2([], _Chars, Res, Res).
stripchars2([H|T], Chars, Res1, Res) :-
membchk(H,Chars),
stripchars2(T, Chars, Res1, Res).
stripchars2([H|T], Chars, Res1, [H|Res]) :-
stripchars2(T, Chars, Res1, Res).</syntaxhighlight>
 
===Test===
<syntaxhighlight lang="picat">go =>
S = "She was a soul stripper. She took my heart!",
println(stripchars(S, "aei")),
stripchars2(S, "aei", S2),
println(S2),
nl.</syntaxhighlight>
 
 
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!
Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|PicoLisp}}==
<langsyntaxhighlight PicoLisplang="picolisp">(de strDiff (Str1 Str2)
(pack (diff (chop Str1) (chop Str2))) )</langsyntaxhighlight>
{{out}}
Output:
<pre>: (strDiff "She was a soul stripper. She took my heart!" "aei")
-> "Sh ws soul strppr. Sh took my hrt!"</pre>
 
=={{header|PL/I}}==
<syntaxhighlight lang="pl/i">strip_chars: procedure (text, chars) returns (character (100) varying);
<lang PL/I>
strip_chars: procedure (text, chars) returns (character (100) varying);
declare text character (*) varying, chars character (*) varying;
declare out_text character (100);
Line 682 ⟶ 2,208:
end;
return (substr(out_text, 1, j) );
end strip_chars;</syntaxhighlight>
 
</lang>
=={{header|PL/M}}==
<syntaxhighlight lang="pli">100H:
BDOS: PROCEDURE(F,A); DECLARE F BYTE, A ADDRESS; GO TO 5; END BDOS;
EXIT: PROCEDURE; GO TO 0; END EXIT;
PRINT: PROCEDURE(S); DECLARE S ADDRESS; CALL BDOS(9,S); END PRINT;
DECLARE TRUE LITERALLY '0FFH', FALSE LITERALLY '0';
 
/* SEE IF STRING CONTAINS CHARACTER */
CONTAINS: PROCEDURE(STR, CHR) BYTE;
DECLARE STR ADDRESS, (SCH BASED STR, CHR) BYTE;
DO WHILE SCH <> '$';
IF SCH = CHR THEN RETURN TRUE;
STR = STR + 1;
END;
RETURN FALSE;
END CONTAINS;
 
/* STRIP CHARACTERS FROM A STRING */
STRIP$CHARS: PROCEDURE(STR, CHARS, OUTBUF);
DECLARE (STR, CHARS, OUTBUF) ADDRESS;
DECLARE (IN$CH BASED STR, OUT$CH BASED OUTBUF) BYTE;
DO WHILE IN$CH <> '$';
IF NOT CONTAINS(CHARS, IN$CH) THEN DO;
OUT$CH = IN$CH;
OUTBUF = OUTBUF + 1;
END;
STR = STR + 1;
END;
OUT$CH = '$';
END STRIP$CHARS;
 
/* TEST */
DECLARE BUF (128) ADDRESS;
 
/* 8080 PL/M DOES NOT SUPPORT LOWERCASE OR EXCLAMATION MARK */
CALL STRIP$CHARS(
.'SHE WAS A SOUL STRIPPER. SHE TOOK MY HEART.$',
.'AEI$',
.BUF);
CALL PRINT(.BUF);
CALL EXIT;
EOF</syntaxhighlight>
{{out}}
<pre>SH WS SOUL STRPPR. SH TOOK MY HRT.</pre>
 
=={{header|Powershell}}==
Powershell have replace operator that by will replace a regex pattern with a given string:
 
<syntaxhighlight lang="powershell">'She was a soul stripper. She took my heart!' -replace '[aei]', ''
Sh ws soul strppr. Sh took my hrt!
</syntaxhighlight>
 
=={{header|Prolog}}==
Works with SWI-Prolog and module '''lambda.pl''' written by '''Ulrich Neumerkel''' found there http://www.complang.tuwien.ac.at/ulrich/Prolog-inedit/lambda.pl .
<syntaxhighlight lang="prolog">:- use_module(library(lambda)).
 
stripchars(String, Exclude, Result) :-
exclude(\X^(member(X, Exclude)), String, Result1),
string_to_list(Result, Result1).
</syntaxhighlight>
{{out}}
<pre> ?- stripchars("She was a soul stripper. She took my heart!","aei", R).
R = "Sh ws soul strppr. Sh took my hrt!".
</pre>
 
=== alternative version using DCG strings ===
 
<syntaxhighlight lang="prolog">
:- system:set_prolog_flag(double_quotes,chars) .
 
%! strip_chars(SOURCEz0,SETz0,TARGETz)
%
% `TARGETz` is `SOURCEz0` but with any of the characters in `SETz0` removed .
 
strip_chars(SOURCEz0,SETz0,TARGETz)
:-
prolog:phrase(strip_chars(SOURCEz0,SETz0),TARGETz)
.
 
strip_chars([],_SETz0_) --> ! .
 
strip_chars([SOURCE0|SOURCEz0],SETz0)
-->
{ \+ \+ lists:member(SOURCE0,SETz0) } ,
! ,
strip_chars(SOURCEz0,SETz0)
.
 
strip_chars([SOURCE0|SOURCEz0],SETz0)
-->
[SOURCE0] ,
strip_chars(SOURCEz0,SETz0)
.
</syntaxhighlight>
 
{{out}}
<pre>
?- strip_chars("She was a soul stripper. She took my heart!","aei",Rs) .
Rs = ['S', h, ' ', w, s, ' ', ' ', s, o, u, l, ' ', s, t, r, p, p, r, '.', ' ', 'S', h, ' ', t, o, o, k, ' ', m, y, ' ', h, r, t, !].
</pre>
 
=={{header|PureBasic}}==
PureBasic uses a single (for ASCII) or a two-byte (for Unicode) null to signal the end of a string. Nulls are thus excluded from the allowable characters to strip as they can't be included in a PureBasic string.
<langsyntaxhighlight PureBasiclang="purebasic">Procedure.s stripChars(source.s, charsToStrip.s)
Protected i, *ptrChar.Character, length = Len(source), result.s
*ptrChar = @source
Line 704 ⟶ 2,330:
Print(#CRLF$ + #CRLF$ + "Press ENTER to exit"): Input()
CloseConsole()
EndIf</langsyntaxhighlight>
{{out}}
Sample output:
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
Line 711 ⟶ 2,337:
===Not using regular expressions===
{{works with|Python|2.6+}}
<langsyntaxhighlight lang="python">>>> def stripchars(s, chars):
... return s.translate(None, chars)
...
>>> stripchars("She was a soul stripper. She took my heart!", "aei")
'Sh ws soul strppr. Sh took my hrt!'</langsyntaxhighlight>
 
{{works with|Python|2.x}}
<langsyntaxhighlight lang="python">>>> import string
>>> def stripchars(s, chars):
... return s.translate(string.maketrans("", ""), chars)
...
>>> stripchars("She was a soul stripper. She took my heart!", "aei")
'Sh ws soul strppr. Sh took my hrt!'</langsyntaxhighlight>
 
Implemented manually:
<langsyntaxhighlight lang="python">>>> def stripchars(s, chars):
... return "".join(c for c in s if c not in chars)
...
>>> stripchars("She was a soul stripper. She took my heart!", "aei")
'Sh ws soul strppr. Sh took my hrt!'</langsyntaxhighlight>
 
===Using regular expressions===
<langsyntaxhighlight lang="python">>>> import re
>>> def stripchars(s, chars):
return re.sub('[%s]+' % re.escape(chars), '', s)
Line 739 ⟶ 2,362:
>>> stripchars("She was a soul stripper. She took my heart!", "aei")
'Sh ws soul strppr. Sh took my hrt!'
>>> </langsyntaxhighlight>
 
=={{header|REXXQuackery}}==
===version 1===
<lang REXX>/* Rexx */
 
<syntaxhighlight lang="quackery"> [ $ "" swap witheach [ upper join ] ] is upper$ ( $ --> $ )
Do
Say stripchars("She was a soul stripper. She took my heart!", "aei")
 
[ $ "" swap witheach [ lower join ] ] is lower$ ( $ --> $ )
Return
End
[ 0 swap witheach [ bit | ] ] is ->set ( [ --> s )
Exit
[ bit & not ] is !in ( s c --> b )
[ $ "" unrot
upper$ dup lower$ join ( omit this line for case-sensitive )
->set swap witheach
[ 2dup !in iff
[ swap dip join ]
else drop ] drop ] is strip$ ( $ $ --> $ )
 
$ "One is never alone with a rubber duck." dup echo$ cr
stripchars:
$ "EIU" strip$ echo$ cr</syntaxhighlight>
Procedure
Do
Parse arg haystack, chs
 
{{out}}
Do c_ = 1 to length(chs)
needle = substr(chs, c_, 1)
haystack = changestr(needle, haystack, '')
End c_
 
<pre>One is never alone with a rubber duck.
Return haystack
On s nvr alon wth a rbbr dck.</pre>
End
 
Exit
=={{header|Racket}}==
</lang>
 
===version 2===
<syntaxhighlight lang="racket">
#lang racket
 
;; Using list operations
(define (stripchars1 text chars)
(list->string (remove* (string->list chars) (string->list text))))
 
;; Using a regexp
;; => will be broken if chars have "-" or "]" or "\\"
(define (stripchars2 text chars)
(regexp-replace* (~a "[" chars "]+") text ""))
</syntaxhighlight>
 
=={{header|Raku}}==
(formerly Perl 6)
<syntaxhighlight lang="raku" line>sub strip_chars ( $s, $chars ) {
return $s.trans( $chars.comb X=> '' );
}
 
say strip_chars( 'She was a soul stripper. She took my heart!', 'aei' );</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Red}}==
<syntaxhighlight lang="red">
stripchars: func [str chars] [trim/with str chars]
stripchars "She was a soul stripper. She took my heart!" "aei"</syntaxhighlight>
 
=={{header|Refal}}==
<syntaxhighlight lang="refal">$ENTRY Go {
= <Prout <Strip ('aei') 'She was a soul stripper. She took my heart!'>>;
};
 
Strip {
(e.Chs) = ;
(e.Chs) s.C e.S, e.Chs: e.1 s.C e.2 = <Strip (e.Chs) e.S>;
(e.Chs) s.C e.S = s.C <Strip (e.Chs) e.S>;
};</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|REXX}}==
===version 1===
In the REXX language, '''strip''' usually means to remove leading and/or trailing characters from a string (most often, blanks).
<syntaxhighlight lang="rexx">/*REXX program removes a list of characters from a string (the haystack). */
<br><br>Some older REXXes don't have a '''changestr''' bif, so one is included here.
say stripChars('She was a soul stripper. She took my heart!', "iea") /*elide: iea */
<lang rexx>/*REXX program to remove a set of characters from a string (haystack). */
exit /*stick a fork in it, we're all done. */
say stripChars('She was a soul stripper. She took my heart!', "iea")
/*──────────────────────────────────────────────────────────────────────────────────────*/
exit
/*───────────────────────────────────stripChars subroutine──────────────*/
stripChars: procedure; parse arg haystack, remove
do j=1 for length(remove)
haystack=changestr( substr( remove, j, 1), haystack, '')
end /*j*/
return haystack</syntaxhighlight>
Some older REXXes don't have a &nbsp; '''changestr''' &nbsp; BIF, so one is included here &nbsp; ───► &nbsp; [[CHANGESTR.REX]].
/*───────────────────────────CHANGESTR subroutine───────────────────────*/
<br><br>
changestr: procedure; parse arg o,h,n; r=; w=length(o); if w==0 then return n||h
{{out|output|text=:}}
do forever; parse var h y (o) _ +(w) h; if _=='' then return r||y; r=r||y||n; end</lang>
'''output'''
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
===version 2===
Using recursion:
<syntaxhighlight lang="rexx">/* REXX */
say StripChars('She was a soul stripper. She took my heart!','iea')
exit 0
 
StripChars: procedure
parse arg strng,remove
removepos=Verify(strng,remove,'MATCH')
if removepos=0 then return strng
parse value strng with strng =(removepos) +1 rest
return strng || StripChars(rest,remove)</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hart!rt!</pre>
 
===version 3===
This works on all Rexxes.
<br>(Except for R4 and ROO at the least, there may be others.)
<syntaxhighlight lang="rexx">
/* REXX ***************************************************************
* If source and stripchars don't contain a hex 00 character, this works
* 06.07.2012 Walter Pachl
* 19.06.2013 -"- space(result,0) -> space(result,0,' ')
* space(result,0) removes WHITESPACE not only blanks
**********************************************************************/
Say 'Sh ws soul strppr. Sh took my hrt! -- expected'
Say stripchars("She was a soul stripper. She took my heart!","aei")
Exit
stripchars: Parse Arg string,stripchars
result=translate(string,'00'x,' ') /* turn blanks into '00'x */
result=translate(result,' ',stripchars) /* turn stripchars into ' ' */
result=space(result,0,' ') /* remove all blanks */
Return translate(result,' ','00'x) /* '00'x back to blanks */
</syntaxhighlight>
 
===version 4===
Another neat (?) one
No x00 restriction and no changestr
<syntaxhighlight lang="rexx">
stripchars: Procedure
Parse Arg i,s /* get input and chars to be removed */
o='' /* initialize result */
Do While i\=='' /* loop through input */
Parse Var i c +1 i /* get one character */
If pos(c,s)=0 Then /* it's not to be removed */
o=o||c /* append it to the result */
End
Return o /* return the result */
</syntaxhighlight>
 
=={{header|Ring}}==
<syntaxhighlight lang="ring">
aList = "She was a soul stripper. She took my heart!"
bList = "aei"
see aList + nl
see stripChars(aList,bList)
 
func stripChars cList, dList
for n = 1 to len(dList)
cList = substr(cList,dList[n],"") + nl
next
return cList
</syntaxhighlight>
 
=={{header|RPL}}==
≪ → string out
≪ "" 1 string SIZE '''FOR''' j
string j DUP SUB
'''IF''' out OVER POS '''THEN''' DROP '''ELSE''' + '''END'''
'''NEXT'''
≫ ≫ 'STRIP' STO
{{in}}
<pre>
"She was a soul stripper. She took my heart!" "aei" STRIP
</pre>
{{in}}
<pre>
1: "Sh ws soul strppr. Sh took my hrt!"
</pre>
 
=={{header|Ruby}}==
<langsyntaxhighlight lang="ruby">>> "She was a soul stripper. She took my heart!".delete("aei") # => "Sh ws soul strppr. Sh took my hrt!"</syntaxhighlight>
 
=> "Sh ws soul strppr. Sh took my hrt!"</lang>
=={{header|Run BASIC}}==
<syntaxhighlight lang="runbasic">function stripchars(texto, remove)
s = texto
for i = 1 to length(remove)
s = replace(s, mid(remove, i, 1), "", true)
next i
 
return s
end function</syntaxhighlight>
 
=={{header|Rust}}==
Naive Implementation:
<syntaxhighlight lang="rust">
fn strip_characters(original : &str, to_strip : &str) -> String {
let mut result = String::new();
for c in original.chars() {
if !to_strip.contains(c) {
result.push(c);
}
}
result
}
</syntaxhighlight>
 
Functional Implementation:
<syntaxhighlight lang="rust">
fn strip_characters(original : &str, to_strip : &str) -> String {
original.chars().filter(|&c| !to_strip.contains(c)).collect()
}
</syntaxhighlight>
 
Either can be executed thusly:
<syntaxhighlight lang="rust">
fn main() {
println!("{}", strip_characters("She was a soul stripper. She took my heart!", "aei"));
}
</syntaxhighlight>
 
=={{header|SAS}}==
This code will write the resulting string to the log:
<syntaxhighlight lang="sas">%let string=She was a soul stripper. She took my heart!;
%let chars=aei;
%let stripped=%sysfunc(compress("&string","&chars"));
%put &stripped;</syntaxhighlight>
 
Log:
<syntaxhighlight lang="sas">Sh ws soul strppr. Sh took my hrt!</syntaxhighlight>
 
=={{header|S-BASIC}}==
<syntaxhighlight lang="BASIC">
rem - strip unwanted characters from a string
function strip(s, unwanted = string) = string
var i = integer
var outstr = string
var ch = char
outstr = ""
for i = 1 to len(s)
ch = mid(s, i, 1)
if instr(1, unwanted, ch) = 0 then
outstr = outstr + ch
next i
end = outstr
 
rem - exercise the routine
print strip("She was a soul stripper. She took my heart!","aei")
 
end
</syntaxhighlight>
{{out}}
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|Scala}}==
<langsyntaxhighlight lang="scala">def stripChars(s:String, ch:String)= s filterNot (ch contains _)
 
stripChars("She was a soul stripper. She took my heart!", "aei")
// => Sh ws soul strppr. Sh took my hrt!</langsyntaxhighlight>
 
=={{header|Scheme}}==
 
Two approaches are given here. The first is in plain Scheme, and implements a loop to remove the characters.
The second uses the SRFI libraries to create a character set and delete those characters from the string.
 
<syntaxhighlight lang="scheme">
(import (scheme base)
(scheme write)
(only (srfi 13) string-delete)
(only (srfi 14) ->char-set))
 
;; implementation in plain Scheme
(define (strip-chars str chars)
(let ((char-list (string->list chars)))
(define (do-strip str-list result)
(cond ((null? str-list)
(reverse result))
((member (car str-list) char-list char=?)
(do-strip (cdr str-list) result))
(else
(do-strip (cdr str-list) (cons (car str-list) result)))))
(list->string
(do-strip (string->list str) '()))))
 
(display (strip-chars "She was a soul stripper. She took my heart!" "aei"))
(newline)
 
;; using functions in SRFI 13 and SRFI 14
(define (strip-chars2 str chars)
(string-delete (->char-set chars) str))
 
(display (strip-chars2 "She was a soul stripper. She took my heart!" "aei"))
(newline)
</syntaxhighlight>
 
{{out}}
<pre>
Sh ws soul strppr. Sh took my hrt!
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|ScriptBasic}}==
<syntaxhighlight lang="scriptbasic">
str1 = "She was a soul stripper. She took my heart!"
rmv = "aei"
FOR i = 1 TO LEN(rmv)
str1 = REPLACE(str1, MID(rmv, i, 1), "")
NEXT
PRINT str1,"\n"
</syntaxhighlight>
 
=={{header|Sed}}==
Using echo and piping it through a sed filter:
<langsyntaxhighlight lang="bash">#!/bin/bash
 
strip_char()
{
echo "$1" | sed "s/[$2]//g"
}</syntaxhighlight>
}
 
</lang>
 
=={{header|Seed7}}==
<langsyntaxhighlight lang="seed7">$ include "seed7_05.s7i";
 
const func string: stripchars (in string: mainStri, in string: charList) is func
Line 825 ⟶ 2,691:
begin
writeln(stripchars("She was a soul stripper. She took my heart!", "aei"));
end func;</langsyntaxhighlight>
{{out}}
 
Output:
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|SETL}}==
<syntaxhighlight lang="setl">program strip_chars;
print(strip("She was a soul stripper. She took my heart!", "aei"));
 
proc strip(s, chs);
return +/[c : c in s | not c in chs];
end proc;
end program;</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Sidef}}==
<syntaxhighlight lang="ruby">func stripchars(str, char_list) {
str.tr(char_list, "", "d");
}</syntaxhighlight>
 
or:
<syntaxhighlight lang="ruby">func stripchars(str, char_list) {
str.chars.grep {|c| !char_list.contains(c)}.join;
}</syntaxhighlight>
 
Calling the function:
<syntaxhighlight lang="ruby">say stripchars("She was a soul stripper. She took my heart!", "aei");</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Slope}}==
 
This example ignores all type/error checking in favor of brevity and assumes
two strings will be given. A solution could also likely be crafted using '''regex-replace'''
or '''string-replace'''.
<syntaxhighlight lang="slope">(define strip-chars (lambda (str chrs)
(define chr-list (map (lambda (ch) (string->rune ch)) (string->list chrs)))
(list->string
(filter
(lambda (ch) (not (member? chr-list (string->rune ch))))
(string->list str)))))
 
(display (strip-chars "She was a soul stripper. She took my heart!" "aei"))</syntaxhighlight>
 
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Smalltalk}}==
{{works with|Pharo|1.3-13315}}
<syntaxhighlight lang="smalltalk">| stripChars |
stripChars := [ :string :chars |
string reject: [ :c | chars includes: c ] ].
stripChars
value: 'She was a soul stripper. She took my heart!'
value: 'aei'.
 
"'Sh ws soul strppr. Sh took my hrt!'"</syntaxhighlight>
 
=={{header|SNOBOL4}}==
Note: "strip" is a function, its argument, the label of its first executed line, and its returned value.
 
<syntaxhighlight lang="snobol4"> DEFINE("strip(strip,c)") :(strip_end)
strip strip ANY(c) = :S(strip)F(RETURN)
strip_end
 
chars = HOST(2, HOST(3)) ;* Get command line argument
chars = IDENT(chars) "aei"
again line = INPUT :F(END)
OUTPUT = strip(line, chars) :(again)
END</syntaxhighlight>
{{out}}
<pre>snobol4 strip.sno aei
She was a soul stripper. She took my heart.
Sh ws soul strppr. Sh took my hrt.</pre>
 
=={{header|Standard ML}}==
<langsyntaxhighlight lang="sml">fun stripchars (string, chars) = let
fun aux c =
if String.isSubstring (str c) chars then
Line 841 ⟶ 2,779:
in
String.translate aux string
end</langsyntaxhighlight>
{{out|Testing}}
 
testing in the interpreter:
 
<pre>- stripchars ("She was a soul stripper. She took my heart!", "aei") ;
val it = "Sh ws soul strppr. Sh took my hrt!" : string</pre>
 
Alternately:
<langsyntaxhighlight lang="sml">fun stripchars (string, chars) =
String.concat (String.tokens (fn c => String.isSubstring (str c) chars) string)</syntaxhighlight>
{{out|Testing}}
</lang>
 
testing in the interpreter:
 
<pre>- stripchars ("She was a soul stripper. She took my heart!", "aei") ;
val it = "Sh ws soul strppr. Sh took my hrt!" : string</pre>
 
=={{header|SmalltalkStringle}}==
<syntaxhighlight lang="stringle">a "She was a soul stripper. She took my heart!"
{{works with|Pharo|1.3-13315}}
b "aei"
<lang smalltalk>
#a
| stripChars |
c c .a
stripChars := [ :string :chars |
b %.\c #c #:c
string reject: [ :c | chars includes: c ] ].
a :a
stripChars
#a
value: 'She was a soul stripper. She took my heart!'
$ c
value: 'aei'.
</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Swift}}==
"'Sh ws soul strppr. Sh took my hrt!'"
<syntaxhighlight lang="swift">extension String {
</lang>
func stripCharactersInSet(chars: [Character]) -> String {
return String(seq: filter(self) {find(chars, $0) == nil})
}
}
 
let aString = "She was a soul stripper. She took my heart!"
let chars: [Character] = ["a", "e", "i"]
 
println(aString.stripCharactersInSet(chars))</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Tcl}}==
<langsyntaxhighlight lang="tcl">proc stripchars {str chars} {
foreach c [split $chars ""] {set str [string map [list $c ""] $str]}
return $str
Line 878 ⟶ 2,824:
 
set s "She was a soul stripper. She took my heart!"
puts [stripchars $s "aei"]</langsyntaxhighlight>
 
=={{header|UNIX ShellTorqueScript}}==
This uses a default function.
$string = "She was a soul stripper. She took my heart!";
$chars = "aei";
$newString = stripChars($string, $chars);
echo($string);
echo($newString);
 
Output:
One would normally do this using the standard tr(1) command:
 
She was a soul stripper. She took my heart!
{{works with|sh}}
Sh ws soul strppr. Sh took my hrt!
<lang bash>strip_chars() {
echo "$1" | tr -d "$2"
}</lang>
 
=={{header|Transd}}==
But it can also be accomplished with bash's built-in parameter expansions:
<syntaxhighlight lang="scheme">#lang transd
 
MainModule: {
{{works with|bash}}
_start: (λ
<lang bash>function strip_chars {
(with s "She was a soul stripper. She took my heart!"
echo "${1//[$2]}"
(textout (replace s "(a|e|i)" "")))
}</lang>
)
}</syntaxhighlight>
{{out}}
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|True BASIC}}==
Test code:
<syntaxhighlight lang="qbasic">FUNCTION stripchars$(text$, remove$)
LET s$ = text$
FOR i = 1 TO LEN(remove$)
DO
LET t = POS(s$, (remove$)[i:i])
IF t <> 0 THEN LET s$ = (s$)[1:t-1] & (s$)[t+1:maxnum] ELSE EXIT DO
LOOP
NEXT i
LET stripchars$ = s$
END FUNCTION
 
<lang bash> strip_charsPRINT stripchars$("She was a soul stripper. She took my heart!", "aei</lang>")
END</syntaxhighlight>
 
=={{header|TUSCRIPT}}==
<syntaxhighlight lang="tuscript">
$$ MODE TUSCRIPT,{}
string="She was a soul stripper. She took my heart!"
stringstrip=EXCHANGE (string,"_[aei]__")
print string
print stringstrip
</syntaxhighlight>
Output:
<pre>
 
<pre>ShShe wswas a soul strpprstripper. ShShe took my hrtheart!</pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|TXR}}==
This solution builds up a regular expression in a hygienic way from the set of characters given as a string.
The string is broken into a list, which is used to construct a regex abstract syntax tree for a character set match, using a Lisp quasiquote. This is fed to the regex compiler, which produces an executable machine that is then used with <code>regsub</code>.
 
On the practical side, some basic structural pattern matching is used to process command line argument list.
This solution uses the functions compl-span-str and span-str, which are based directly on the standard C library functions strspn and strcspn (or, rather, their wchar_t counterparts wcsspn and wcscspn).
 
Since the partial argument list (the arguments belonging to the TXR script) is a suffix of the full argument list (the complete arguments which include the invoking command and the script name), the classic Lisp function <code>ldiff</code> comes in handy in obtaining just the prefix, for printing the usage:
<lang txr>@(next :args)
@arg1
<syntaxhighlight lang="txrlisp">(defun strip-chars (str set)
@arg2
@(do (defunlet* strip((regex-charsast ^(set ,*(list-str set)))
(for ((pieces ())regex-obj (strregex-suffixcompile strregex-ast)))
(regsub regex-obj "" str)))
((not (zerop (length str-suffix))) (cat-str (nreverse pieces) ""))
()
(let* ((len-piece (compl-span-str str-suffix set))
(piece (sub-str str-suffix 0 len-piece))
(suff0 (sub-str str-suffix len-piece nil))
(len-non-piece (span-str suff0 set)))
(push piece pieces)
(set str-suffix (sub-str suff0 len-non-piece nil))))))
@(bind result @(strip-chars arg1 arg2))</lang>
 
(defun usage ()
<pre>$ ./txr rosetta/strip-chars.txr "she was a soul stripper. she stole my heart." "aei"
(pprinl `usage: @{(ldiff *full-args* *args*) " "} <string> <set>`)
arg1="she was a soul stripper. she stole my heart."
(exit 1))
arg2="aei"
result="sh ws soul strppr. sh stol my hrt."</pre>
 
(tree-case *args*
=={{header|Ursala}}==
((str set extra) (usage))
((str set . junk) (pprinl (strip-chars str set)))
(else (usage)))</syntaxhighlight>
{{out}}
<pre>$ txr strip-chars-2.tl
usage: txr strip-chars-2.tl <string> <set>
$ txr strip-chars-2.tl "she was a soul stripper. she stole my heart." "aei"
sh ws soul strppr. sh stol my hrt.</pre>
 
Now here is a rewrite of <code>strip-chars</code> which just uses classic Lisp that has been generalized to work over strings, plus the <code>do</code> syntax (a sibling of the <code>op</code> operator) that provides syntactic sugar for a lambda function whose body is an operator or macro form.
 
<syntaxhighlight lang="txr">(defun strip-chars (str set)
(mappend (do if (memq @1 set) (list @1)) str))</syntaxhighlight>
 
<code>(do if (memq @1 set) (list @1))</code> is just <code>(lambda (item) (if (memq item set) (list item)))</code>.
<code>mappend</code> happily maps over strings and since the leftmost input sequence is a string, and the return values of the lambda are sequence of characters, <code>mappend</code> produces a string.
 
=={{header|UNIX Shell}}==
One would normally do this using the standard tr(1) command:
{{works with|sh}}
<syntaxhighlight lang="bash">strip_chars() {
echo "$1" | tr -d "$2"
}</syntaxhighlight>
But it can also be accomplished with bash's built-in parameter expansions:
{{works with|bash}}
<syntaxhighlight lang="bash">function strip_chars {
echo "${1//[$2]}"
}</syntaxhighlight>
Test code:
<syntaxhighlight lang="bash"> strip_chars "She was a soul stripper. She took my heart!" aei</syntaxhighlight>
{{out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|Ursala}}==
Normally there's no need to define this operation because it's built in.
<langsyntaxhighlight Ursalalang="ursala">strip = ~&j
 
#cast %s
 
test = strip('she was a soul stripper. she took my heart','aei')</langsyntaxhighlight>
{{out}}
output:
<pre>
'sh ws soul strppr. sh took my hrt'
Line 943 ⟶ 2,947:
{{omit from|Bc}}
{{omit from|Openscad}}
 
=={{header|VBA}}==
Pass the optional bSpace parameter True to replace stripped characters with spaces, otherwise replaced with null.
 
<syntaxhighlight lang="vb">Function StripChars(stString As String, stStripChars As String, Optional bSpace As Boolean)
Dim i As Integer, stReplace As String
If bSpace = True Then
stReplace = " "
Else
stReplace = ""
End If
For i = 1 To Len(stStripChars)
stString = Replace(stString, Mid(stStripChars, i, 1), stReplace)
Next i
StripChars = stString
End Function</syntaxhighlight>
 
{{out}}
<pre>' with bSpace = True:
Sh w s soul str pp r. Sh took my h rt!
 
'with bSpace = False / omitted:
Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|VBScript}}==
<syntaxhighlight lang="vb">
Function stripchars(s1,s2)
For i = 1 To Len(s1)
If InStr(s2,Mid(s1,i,1)) Then
s1 = Replace(s1,Mid(s1,i,1),"")
End If
Next
stripchars = s1
End Function
 
WScript.StdOut.Write stripchars("She was a soul stripper. She took my heart!","aei")
</syntaxhighlight>
 
{{Out}}
<pre>Sh ws soul strppr. Sh took my hrt!</pre>
 
=={{header|V (Vlang)}}==
<syntaxhighlight lang="v (vlang)">fn main() {
println(stripchars("She was a soul stripper. She took my heart!","aei"))
}
 
fn stripchars(str string, charstrip string) string {
mut newstr := str
for element in charstrip {newstr = newstr.replace(element.ascii_str(), '')}
return newstr
}</syntaxhighlight>
 
{{out}}
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|Wren}}==
<syntaxhighlight lang="wren">var stripChars = Fn.new { |s, t|
return s.map { |c|
return (t.indexOf(c) == -1) ? c : ""
}.join()
}
 
System.print(stripChars.call("She was a soul stripper. She took my heart!", "aei"))</syntaxhighlight>
 
{{out}}
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|XPL0}}==
<syntaxhighlight lang="xpl0">string 0; \make strings zero-terminated
 
func In(Char, Chars); \Is Char in the string Chars?
char Char, Chars;
int I;
for I:= 0 to -1>>1 do \for many times...
[if Chars(I) = 0 then return false;
if Chars(I) = Char then return true;
];
 
func StripChars(String, Chars); \Remove Chars from String
char String, Chars;
int I, O;
[O:= 0;
for I:= 0 to -1>>1 do \for many times...
[if not In(String(I), Chars) then
[String(O):= String(I); O:= O+1];
if String(I)=0 then return String;
];
];
 
Text(0, StripChars("She was a soul stripper. She took my heart!", "aei"))</syntaxhighlight>
 
Output:
<pre>
Sh ws soul strppr. Sh took my hrt!
</pre>
 
=={{header|Yabasic}}==
<syntaxhighlight lang="yabasic">sub stripchars$(text$, remove$)
local i, t, s$
s$ = text$
for i = 1 to len(remove$)
do
t = instr(s$, mid$(remove$, i, 1))
if t then s$ = left$(s$, t - 1) + mid$(s$, t + 1) else break : fi
loop
next i
return s$
end sub
 
print stripchars$("She was a soul stripper. She took my heart!", "aei")</syntaxhighlight>
 
=={{header|zkl}}==
<syntaxhighlight lang="zkl">println("She was a soul stripper. She took my heart!" - "aei")
//-->Sh ws soul strppr. Sh took my hrt!</syntaxhighlight>
Klint
44

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