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<?hh class Value<T> { public function __construct(private T $value) {} public function get(): T { return $this->private; } } class Constraint { public function isEqual<T>(T $valueOne, T $valueTwo) { return ($valueOne == $valueTwo) } } $cons = new Constraint(); var_dump($cons->isEqual(1,2)); var_dump($cons->isEqual("hello", "hello"));

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