命名返回变量未设置为for循环

Question

I have a GoLang function that tries to set some named return variables inside a FOR loop. It looks something like this:

func (dbs *myClient) DoStuff() (response []byte, e error) {
    for i:=0;i<5;i+=1 {
        response, e = dbs.doNetworkThing()
        if e == nil {
            break;
        }
    }
    return response, e
}

Basically what I'd like to do is set the return variables response and e to first result from doNetworkThing() that does not fail.

The problem is that response and e get reset once I exit from the for loop. What's the correct idiomatic way of doing something like this in GoLang?

I really want to use named return variables since they make things easier to read (I would consider something like this to be an ugly solution).

// Seems to be an ugly solution - would prefer using named return vars
func (dbs *myClient) DoStuff() ([]byte, error) {
    var response []byte
    var e error
    for i:=0;i<5;i+=1 {
        response, e := dbs.doNetworkThing()
        if e == nil {
            break;
        }
    }
    return response, e
}

Answer 1

The code below seems to work (compiles). tested here.

func (dbs *myClient) DoStuff() (response []byte, e error) {
    for i:=0;i<5;i+=1 {
        response, e = dbs.doNetworkThing()
        if e == nil {
            break;
        }
    }
    return
}

What I did:

1. I removed the response and e declaration as it is already declared the moment you named your return values.
2. changed := to = because (again) the variable is already declared
3. changed return response, e to return since the return values are named

Hope it helps! :)