Online PHP editor | vld for XstH6

@ 2014-05-08T12:15:02Z

<?hh

class B {
    public function doB() : string {
        return "b";
    }
}
 
class C extends B {
    public function doC() : string {
        return "c";
    }
}
 
function foo(Vector<B> $vec) { 
    $vec->add(new B()); 
}
 
function bar(Vector<C> $vec) {
    foo($vec);
}

$v = new Vector<C>();

bar($v);

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