Ds\Sequence::first
Returns the first value in the sequence.
Description
abstract public mixed Ds\Sequence::first
( void
)
Parameters
This function has no parameters.
Return Values
The first value in the sequence.
Errors/Exceptions
UnderflowException if empty.
Examples
Example #1 Ds\Sequence::first example
<?php
$sequence = new \Ds\Vector([1, 2, 3]);
var_dump($sequence->first());
?>
The above example will output
something similar to: