promise

package

v0.18.2 Latest Latest Go to latest Published: Nov 12, 2022 License: MIT Imports: 2 Imported by: 0

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type Promise[T any] struct {
	// contains filtered or unexported fields
}

Promise is an asynchronous result to an operation.

func NewPromise[T any]() *Promise[T]

NewPromise constructs a new empty Promise.

func NewPromiseWithErr[T any](err error) *Promise[T]

NewPromiseWithErr constructs a promise pre-resolved with an error.

func NewPromiseWithResult[T any](val T, err error) *Promise[T]

NewPromiseWithResult constructs a promise pre-resolved with a result.

func (p *Promise[T]) Await(ctx context.Context) (val T, err error)

Await waits for the result to be set or for ctx to be canceled.

func (p *Promise[T]) SetResult(val T, err error) bool

SetResult sets the result of the promise.

Returns false if the result was already set.