Say, I have an array of buffered input channels. I want to read a value from a channel, preferring those channels that come earlier in the array, and I'd like to know which channel the value has come from. If all the channels are empty, I want to block and wait. However, once all the channels are closed, I'd also like to unblock and detect that.
How should I implement it in code?
Something like:
func waitValueArrives(channels [] chan interface{}) (interface{}, int) {
...
}
