public function testMapCat()
{
$input = [[0, 1, 2], [3, 4, 5], [6]];
$expected = [0, 1, 2, 3, 4, 5, 6];
$xf = t::mapcat(t::identity());
$actual = t::into([], $xf, $input);
$this->assertEquals($expected, $actual);
}
public function testMapCat()
{
$input = [[0, 1, 2], [3, 4, 5], [6]];
$expected = [0, 1, 2, 3, 4, 5, 6];
$xf = t::mapcat(t::identity());
$actual = t::into([], $xf, $input);
$this->assertEquals($expected, $actual);
}