Nil Channel favor/bias channels:

OrderedAccordingToChannelSemantics.go

func consumeAccordingToChannelSemantics(msg_1ch chan msg_1, msg_2ch chan msg_2) {
	// because the channels were asychronous and completely full
	// before running this routine, select's channel semantics
	// considers the messages as having arrived at the same time.
	// select therefore randomly reads one of the channels. since
	// only two case statements, probability of selection is
	// equivalent to a random coin toss.
	for msgCnt := 0; msgCnt < 21; msgCnt++ {
		select {
		case msg, ok := <-msg_1ch:
			if ok {
				msg.msgType()
			}
		case msg, ok := <-msg_2ch:
			if ok {
				msg.msgType()
			}
		}
	}
}