Folks,
well, subj - why can't I "just" do a select on a slice of channels? Yes, I
can run a bunch goroutines with of reads on an each channel, funnel it all
into 1 notification channel, pick up on the other side... boring stuff,
really...
But why not "just"
func main() {
cc := make([]chan interface{}, 10)
for i := 0; i < len(cc); i++ {
cc[i] = make(chan interface{})
}
dd := make([]chan int)
for i := 0; i < 1000; i++ {
dd = append(dd, make(chan int))
}
select {
// do we need a special <-[] ?
case i, c, v, ok := <-[]cc:
fmt.Printf("cc replied : channel index %d, channel %v, value %v,
ok=%v", i, c, v, ok)
// or I dunno, not introducing a new op
case i, d, v, ok := <-dd:
fmt.Printf("dd sent something: channel index %d, channel %v, value
%v, ok=%v", i, d, v, ok)
}
// or shorter, but I hope you get the drift
select {
case i, c, ok := <-[]cc:
fmt.Printf("cc replied : channel index %d, channel %v, value %v,
ok=%v", i, c, <-c, ok)
case i, d, ok := <-dd:
fmt.Printf("dd sent something: channel index %d, channel %v, value
%v, ok=%v", i, d, <-d, ok)
}
}
Why? System limitations? Rarely needed?
Feels like extending language to handle that would not be too much of
violation of an existing code. Ok, lets go nuts! Mirrored "cc <- value" for
sending to a slice of channels! -- it should pick randomly available
channel out of the slice of channels!
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