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a guest May 23rd, 2019 57 Never
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  1. <?php
  2. class Pipeline
  3. {
  4.     public static function make_pipeline(...$funcs)
  5.     {
  6.         return function($arg) use ($funcs)
  7.         {
  8.             foreach($funcs as $func){
  9.                 $arg = $func($arg);
  10.             }
  11.             return $arg;
  12.         };
  13.     }
  14. }
  15.  
  16. $fun = Pipeline::make_pipeline(function($x) { return $x * 3; }, function($x) { return $x + 1; },
  17.                           function($x) { return $x / 2; });
  18. echo $fun(3); # should print 5
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