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PHP - Ds Deque map() Function



Ds\Deque::map() function can return the result of applying a callback to each value.

Syntax

public Ds\Deque Ds\Deque::map( callable $callback )

Ds\Deque::map() function can return the result of applying a callback to each value in the deque.

Example 1

<?php 
   $deque = new \Ds\Deque([1, 2, 3, 4, 5]);  
   echo("The elements in deque: \n"); 
   
   print_r($deque); 
   print_r($deque->map(function($element) {
      return $element * 10; 
   }));
?>

Example 2

<?php 
   $deque = new \Ds\Deque([10, 20, 30, 40, 50]); 
   echo("The elements in deque: \n"); 
   
   print_r($deque); 
   print_r($deque->map(function($element) { 
      return $element / 10; 
   })); 
?>
php_function_reference.htm
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