Conditional structures: Difference between revisions
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==[[OCaml]]== |
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[[Category:OCaml]] |
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===if-then-else=== |
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'''Compiler:''' [[OCaml]] 3.09 |
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let condition = true |
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if condition then |
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()//do something |
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else |
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()//do something else |
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===match-with=== |
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match expression with |
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| 0 -> ()//do something |
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| 1 -> ()//do something |
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| n when n mod 2 = 0 -> ()//do something |
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| _ -> ()//do something |
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==[[PHP]]== |
==[[PHP]]== |
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[[Category:PHP]] |
[[Category:PHP]] |
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if |
===if=== |
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'''Interpreter''': [[PHP]] 3.x & 4.x & 5.x |
'''Interpreter''': [[PHP]] 3.x & 4.x & 5.x |
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?> |
?> |
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switch |
===switch=== |
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'''Interpreter''': [[PHP]] 3.x & 4.x & 5.x |
'''Interpreter''': [[PHP]] 3.x & 4.x & 5.x |
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Revision as of 16:27, 25 January 2007
AppleScript
if-then-else
if myVar is "ok" then return true
set i to 0 if i is 0 then return "zero" else if i mod 2 is 0 then return "even" else return "odd" end if
C
if-then-else
Compiler: GCC 4.1.2
int main (int argc, char ** argv) {
int input = 2;
if ( 3 == input ) {
// Do something
}
if ( 3 == input ) {
// Do something
} else {
// Do something else
}
}
switch
Compiler: GCC 4.1.2
int main (int argc, char ** argv) {
int input = 42;
switch (input) {
case 0:
// Do something, because input = 0
break;
case 1:
// Do something, because input = 1
break;
case 2:
// Do something, because input = 2
default:
// Do something else.
break; // Optional
}
}
C++
Run-Time Control Structures
if-then-else
Compiler: GCC 4.1.2
int main (void) {
int input = 2;
if ( 3 == input ) {
// Do something
}
if ( 3 == input ) {
// Do something
} else {
// Do something else
}
}
switch
Compiler: GCC 4.1.2
int main (void) {
int input = 42;
switch (input) {
case 0:
// Do something, because input = 0
break;
case 1:
// Do something, because input = 1
break;
case 2:
// Do something, because input = 2
// Because there is no 'break', we also fall through
// into the default case, executing it right after case 2:
default:
// Do something else.
break; // Optional
}
}
Compile-Time Control Structures
Preprocessor Techniques
- ifdef, #ifndef, etc..
ColdFusion
if-elseif-else
Compiler: ColdFusion any version
<cfif x eq 3> do something <cfelseif x eq 4> do something else <cfelse> do something else </cfif>
switch
Compiler: ColdFusion any version
<cfswitch expression="#x#"> <cfcase value="1"> do something </cfcase> <cfcase value="2"> do something </cfcase> <cfdefaultcase> do something </cfdefaultcase> </cfswitch>
OCaml
if-then-else
Compiler: OCaml 3.09
let condition = true if condition then ()//do something else ()//do something else
match-with
match expression with | 0 -> ()//do something | 1 -> ()//do something | n when n mod 2 = 0 -> ()//do something | _ -> ()//do something
PHP
if
Interpreter: PHP 3.x & 4.x & 5.x
<?php $foo = 3; if ($foo == 2) //do something if ($foo == 3) //do something else //do something else
if ($foo != 0)
{
//do something
}
else
{
//do another thing
}
?>
switch
Interpreter: PHP 3.x & 4.x & 5.x
<?php
switch ($i)
{
case "apple":
echo "i is apple";
break;
case "bar":
echo "i is bar";
break;
case "cake":
echo "i is cake";
break;
}
?>