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May 26th, 2019
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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 $function) {
  9. //Cek apakah nilai null atau tidak
  10. if(!isset($value))
  11. $value = $function($arg); //Parameter diisi dengan nilai arg
  12. else
  13. $value = $function($value); //Parameter diisi dengan nilai hasil function
  14. }
  15. return $value;
  16. };
  17. }
  18. }
  19.  
  20. $fun = Pipeline::make_pipeline(function($x) { return $x * 3; }, function($x) { return $x + 1; },
  21. function($x) { return $x / 2; });
  22. echo $fun(3); # should print 5
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