Retrofitting Async/Await in Go 1.18

• async

  3 63 1.8 Go

  experimental promises in go1.18 with generics (by nkcmr)

// Taken from: https://github.com/nkcmr/async/blob/main/async.go type syncPromise[T any] struct { done chan struct{} v T err error } func (s *syncPromise[T]) Await(ctx context.Context) (T, error) { select { case <-ctx.Done(): var zerov T return zerov, ctx.Err() case <-s.done: return s.v, s.err } } func (s *syncPromise[T]) Settled() bool { select { case <-s.done: return true default: return false } }

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