/**
* Push an item onto the beginning of the collection.
*
* @param mixed $value
* @param mixed $key
*
* @return $this
*/
public function prepend($value, $key = null)
{
$this->items = Arr::prepend($this->items, $value, $key);
return $this;
}
public function testPrepend()
{
$array = Arr::prepend(['one', 'two', 'three', 'four'], 'zero');
$this->assertEquals(['zero', 'one', 'two', 'three', 'four'], $array);
$array = Arr::prepend(['one' => 1, 'two' => 2], 0, 'zero');
$this->assertEquals(['zero' => 0, 'one' => 1, 'two' => 2], $array);
}