Ds\Sequence::rotate

(PECL ds >= 1.0.0)

Ds\Sequence::rotate — Rotates the sequence by a given number of rotations

Description

abstract public Ds\Sequence::rotate(int $rotations): void

Rotates the sequence by a given number of rotations, which is equivalent to successively calling $sequence->push($sequence->shift()) if the number of rotations is positive, or $sequence->unshift($sequence->pop()) if negative.

Liste de paramètres

rotations: The number of times the sequence should be rotated.

Valeurs de retour

Aucune valeur n'est retournée.. The sequence of the current instance will be rotated.

Exemples

Exemple #1 Ds\Sequence::rotate() example

<?php
$sequence = new \Ds\Vector(["a", "b", "c", "d"]);

$sequence->rotate(1);  // "a" is shifted, then pushed.
print_r($sequence);

$sequence->rotate(2);  // "b" and "c" are both shifted, the pushed.
print_r($sequence);
?>

Résultat de l'exemple ci-dessus est similaire à :

(
    [0] => b
    [1] => c
    [2] => d
    [3] => a
)
Ds\Vector Object
(
    [0] => d
    [1] => a
    [2] => b
    [3] => c
)

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