Anonymous user
Function composition: Difference between revisions
→{{header|PHP}}
(→{{header|Perl 6}}: show that ring operator is composable) |
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Line 976:
=={{header|PHP}}==
<lang php>
function compose($f, $g) {
return create_function('$x', "return $f($g(\$x));");
}
$trim_strlen = compose('strlen', 'trim');
echo $result = $trim_strlen(' Test '), "\n"; // prints 4
?></lang>
{{works with|PHP|5.3+}}
<lang php><?php
function compose($f, $g) {
return function($x) use ($f, $g) { return $f($g($x)); };
}
$trim_strlen = compose(strlen, trim);
echo $result = $trim_strlen(' Test '), "\n"; // prints 4
?></lang>
=={{header|PicoLisp}}==
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