class Test

	shared

		def main
			.tryParse
			.tryGetValue

		def tryParse
			i = 0
			r = int.tryParse('1', out i)
			assert r and i == 1

			r = int.tryParse('aoeu', out i)
			assert not r and i == 0
			
			r = int.tryParse('1', out i)
			assert r

		def tryGetValue
			d = {'one': 1}
			i = 0
			r = d.tryGetValue('one', out i)

			r = d.tryGetValue('two', out i)
			assert not r and i == 0

			r = d.tryGetValue('one', out i)
			assert r