Regular expressions: Difference between revisions
Added Wren
Langurmonkey (talk | contribs) |
(Added Wren) |
||
Line 2,768:
That's it. The resulting binary will print
'String "string$" matches string "This is a string"'</lang>
=={{header|Wren}}==
{{libheader|Wren-pattern}}
Wren doesn't have regular expressions as such but the above module allows us to do simple string pattern matching and replacement in a similar fashion. SenseTalk's examples have been borrowed for this purpose.
<lang ecmascript>import "/pattern" for Pattern
var s = "This is a story about R2D2 and C3P0 who are best friends."
var p = Pattern.new("/u/d/u/d")
var matches = p.findAll(s)
System.print("Original string:\n%(" %(s)")")
System.print("\nThe following matches were found:")
matches.each{ |m| System.print(" %(m.text) at index %(m.index)") }
System.print("\nAfter replacing the second match:")
System.print(" %(p.replace(s, "Luke", 2, 1))") // replace 2nd match with "Luke"
System.print("\nReformatted phone list example:")
var phoneList = [
"Harry Potter 98951212",
"Hermione Granger 59867125",
"Ron Weasley 56471832"
]
var p2 = Pattern.new("[+1/a] [+1/a] [=8/d]")
for (record in phoneList) {
var m = p2.find(record)
var t = m.capsText
System.print(" %(t[1]), %(t[0]) - %(t[2])")
}</lang>
{{out}}
<pre>
Original string:
This is a story about R2D2 and C3P0 who are best friends.
The following matches were found:
R2D2 at index 22
C3P0 at index 31
After replacing the second match:
This is a story about R2D2 and Luke who are best friends.
Reformatted phone list example:
Potter, Harry - 98951212
Granger, Hermione - 59867125
Weasley, Ron - 56471832
</pre>
=={{header|zkl}}==
| |||