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zonuexe/fn.php

Created August 2, 2019 06:52
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fn.php
<?php
// Short
$fix=fn($f)=>(fn($x)=>$f(fn(...$as)=>($x($x)(...$as))))(fn($x)=>$f(fn(...$as)=>($x($x)(...$as))));
// Long
$fix = fn (callable $f) => call_user_func(
(fn (callable $x) => $f(fn (...$as) => ($x($x)(...$as)))),
(fn (callable $x) => $f(fn (...$as) => ($x($x)(...$as))))
);
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