class Platform

	cue init(name as String)
		base.init
		_name = name

	get name from var as String

	def equals(other as Object?) as bool is override
		if other is this, return true
		if other inherits Platform
			return .name == other.name
		else
			return false

	def getHashCode as int is override
		return .name.getHashCode

	def toString as String is override
		return .name


class Test

	def main is shared
		nonsorted = [Platform('Linux'), Platform('MS Windows'), Platform('Apple')]
		sorted = [Platform('Apple'), Platform('Linux'), Platform('MS Windows')]
		assert nonsorted <> sorted
		
		# sort with ref
		t = List<of Platform>(nonsorted)
		assert t == nonsorted and t <> sorted
		t.sort(do(a as Platform, b as Platform))  # .error. cannot yield
			yield 1  # .error. cannot yield
		
		t.sort(do(a as Platform, b as Platform))
			return x  # .error. cannot find "x"

		# TODO: argument type mismatch
		# TODO: explicit return type mismatch