public function testZip()
{
$z1 = P::compose(['P', 'toArray'], P::zip([1, 2]));
$this->assertEquals([[1, 'a'], [2, 'b']], P::toArray(P::zip([1, 2], ['a', 'b'])));
$this->assertEquals([[1, 'a'], [2, 'b']], $z1(['a', 'b']));
$this->assertEquals([], P::toArray(P::zip([], [2, 'b'])));
$a = function () {
(yield 1);
(yield 2);
};
$b = function () {
(yield 'a');
(yield 'b');
};
$this->assertEquals([[1, 'a'], [2, 'b']], P::toArray(P::zip([1, 2], ['a', 'b'])));
$a = ['a' => 1, 'b' => 2];
$b = ['c' => 3, 'd' => 4];
$this->assertEquals([[1, 3], [2, 4]], P::toArray(P::zip($a, $b)));
}
