promise

Documentation

Index

• type Promise
  • func New[T any](execution func(resolve func(data T), reject func(err error))) *Promise[T]
  • func Then[T, M any](promise *Promise[T], resolveT func(T) M) *Promise[M]
  • func (p *Promise[T]) Await() (T, error)

Types

type Promise

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

Promise is a simple implementation of a component that is represented eventual completion or failure of asynchronous operation and its resulting val

func New

func New[T any](execution func(resolve func(data T), reject func(err error))) *Promise[T]

New creates and returns a new Promise instance the execution function will be called in a separate goroutine and not block the caller's execution process, this function manages of execution flow and will decide based on its internal state which function should call The "resolve" function is invoked on success otherwise invokes a "reject"

func Then

func Then[T, M any](promise *Promise[T], resolveT func(T) M) *Promise[M]

Then wraps origin promise and use the resolver function to convert origin result value of type M into type T

func (*Promise[T]) Await

func (p *Promise[T]) Await() (T, error)

Await waits for execution to complete