(PECL ds >= 1.0.0)
Ds\Vector::first — Returns the first value in the vector
This function has no parameters.
The first value in the vector.
UnderflowException if empty.
Example #1 Ds\Vector::first() example
<?php
$vector = new \Ds\Vector([1, 2, 3]);
var_dump($vector->first());
?>
The above example will output something similar to:
int(1)