public function testFlip()
{
$expected = array('i' => array('a' => 'ai', 'b' => 'bi', 'd' => 'ai'), 'j' => array('a' => 'aj', 'b' => 'bj', 'd' => 'dj'), 'k' => array('b' => 'bk', 'd' => 'dk'));
$this->assertEquals($expected, Arr::flip($this->input));
}
/**
* Flip a 2D array so that it's organized by columns instead of rows.
*
* Example:
* $a = array(array('a','1'), array('b','2'), array('c','3'));
* $b = array(array('a','b','c'), array('1','2','3');
* arr($a)->flip()->get() == $b; // true
*
* @return Arr
*/
public function flip()
{
return new self(Arr::flip($this->data));
}
