Code RoomQuery returns first result

HardPrep Room Coding #2047

Query returns first result

Code reviewCode quality & reviewSenior–Staff~30 min

Review this Go helper that races a primary and a fallback backend and returns whichever answers first.

What a strong answer looks like

Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix, specific and kind.

0:00 of about 30 min

Mark a line and say what kind of problem it is.0 findings

1func Query(ctx context.Context, primary, fallback Backend) (Result, error) {

2 ch := make(chan Result)

3 go func() { ch <- primary.Do(ctx) }()

4 go func() { ch <- fallback.Do(ctx) }()

5

6 select {

7 case r := <-ch:

8 return r, nil

9 case <-ctx.Done():

10 return Result{}, ctx.Err()

11 }

12}

Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.