Class Promise<T>

Class Promise models a promise for a future value. This class has platform specific behaviors.

Type parameters

T

Hierarchy

Promise

Index

Constructors

constructor

Properties

id

Methods

Constructors

constructor

new Promise<T>(init?: (T: any, any: any) => void): Promise<T>

Create a new promise.

Type parameters
- T
Parameters
- Optional init: (T: any, any: any) => void
  - - (T: any, any: any): void
    - Parameters
      - T: any
      - any: any
      Returns void
Returns Promise<T>

Properties

id

id: number

The identifier of the promise

Methods

catchError

catchError(rejectCallback: (any: any) => void): any

Add a handler to catch an error.

Parameters
- rejectCallback: (any: any) => void
  
  the error handler.
  - - (any: any): void
    - Parameters
      - any: any
      Returns void
Returns any

setId

setId(id: number): void

Set the identifier.

Parameters
- id: number
Returns void

then

then(fulfillCallback: (T: any) => void, rejectCallback?: (any: any) => void): any

Add handlers to process the response or catch an error.

Parameters
- fulfillCallback: (T: any) => void
  
  the response handler.
  - - (T: any): void
    - Parameters
      - T: any
      Returns void
- Optional rejectCallback: (any: any) => void
  
  the optional error handler.
  - - (any: any): void
    - Parameters
      - any: any
      Returns void
Returns any