public function testHasPrecurriedVersion() { $this->assertEquals(Maybe::of('Ax'), call_user_func(F\C1\prop('name'), ['name' => 'Ax', 'age' => 92])); }
public function testChain2() { $this->assertEquals(Maybe::of(null), Maybe::of(null)->chain(F\C1\prop('address'))->chain(F\C1\prop('street'))); }