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Ds\Sequence::first

(PECL ds >= 1.0.0)

Ds\Sequence::firstReturns the first value in the sequence

Description

abstract public Ds\Sequence::first(): mixed

Returns the first value in the sequence.

Liste de paramètres

Cette fonction ne contient aucun paramètre.

Valeurs de retour

The first value in the sequence.

Erreurs / Exceptions

UnderflowException if empty.

Exemples

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

<?php
$sequence
= new \Ds\Vector([1, 2, 3]);
var_dump($sequence->first());
?>

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

int(1)
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