Created
February 9, 2023 11:41
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1 buffered chan errgroup result handling
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| package main | |
| import ( | |
| "context" | |
| "fmt" | |
| "golang.org/x/sync/errgroup" | |
| ) | |
| func race(ctx context.Context) ([]int, error) { | |
| res := make(chan []int, 1) | |
| res <- nil | |
| g, ctx := errgroup.WithContext(ctx) | |
| for i := 0; i < 10; i++ { | |
| j := i | |
| g.Go(func() error { | |
| res <- append(<-res, j) | |
| return nil | |
| }) | |
| } | |
| err := g.Wait() | |
| return <-res, err | |
| } | |
| func main() { | |
| res, err := race(context.Background()) | |
| if err != nil { | |
| fmt.Println(err) | |
| return | |
| } | |
| fmt.Println(res) | |
| } |
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