public function test_allSatisfies()
{
$allNotNull = F\allSatisfies(F\pipe(F\eq(0), F\not()));
$this->assertTrue($allNotNull([9, 3, 2, 4]));
$this->assertFalse($allNotNull([9, 3, 0, 4]));
}
public function test_not()
{
$this->assertTrue(F\not(false));
$this->assertFalse(F\not(true));
}
