Go channel generator functions with multiplexing

main.go

// support for arbitrary number of channels of type string
func nonDeterministicChanMultiPlexer(channels ...chan string) <-chan string {
	outChan := make(chan string)

	for _, c := range channels {
		go func(cc chan string) {
			for {
				outChan <- <-cc
			}
		}(c)
	}

	return outChan
}

// support for known number of channels, in this case just 2
func chanMultiPlexer(c1, c2 chan string) <-chan string {
	outChan := make(chan string)
	go func() {
		for {
			select {
			case s := <-c1:
				outChan <- s
			case s := <-c2:
				outChan <- s
			}
		}
	}()

	return outChan
}