golang返回多个值问题

Question

I was wondering why this is valid go code:

func FindUserInfo(id string) (Info, bool) {
    it, present := all[id]
    return it, present
}

but this isn't

func FindUserInfo(id string) (Info, bool) {
    return all[id]
}

is there a way to avoid the temporary variables?

Answer 1

You may save a couple of key strokes by using named returns:

func FindUserInfo(id string) (i Info, ok bool) {
    i, ok = all[id]
    return
}

But apart from that, I don't think what you want is possible.