struct A

	cue init(i as int)
		_i = i

	pro i from var as int


class P

	def main
		a = A(2)
		b = A(2)
		assert a.equals(b)
		assert a == b
		assert not (a <> b)

		b = A(3)
		assert not a.equals(b)
		assert not (a == b)
		assert a <> b