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PHP - Ds Sequence shift() Function


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Ds\Sequence::shift() function can remove and return a first value.

Syntax

public abstract mixed Ds\Sequence::shift( void )

Ds\Sequence::shift() function doesn't have any parameters. This function can return the first value that was removed.

Ds\Sequence::shift() function can throw UnderflowException if empty.

Example 1

<?php 
   $seq = new \Ds\Vector([10, 15, 20, 25]); 
  
   var_dump($seq->shift()); 
   var_dump($seq->shift()); 
   var_dump($seq->shift()); 
   var_dump($seq->shift()); 
?>

Example 2

<?php 
   $seq = new \Ds\Vector(["Raja", "Jai", "Adithya"]); 
  
   var_dump($seq->shift()); 
   var_dump($seq->shift()); 
   var_dump($seq->shift()); 
?>
php_function_reference.htm

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