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API > @angular/core

ReflectiveKey

A unique object used for retrieving items from the ReflectiveInjector.

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Deprecated: No replacement

      
      class ReflectiveKey {
  static numberOfKeys: number
  static get(token: Object): ReflectiveKey
  constructor(token: Object, id: number)
  displayName: string
  token: Object
  id: number
}

Description

Keys have:

  • a system-wide unique id.
  • a token.

Key is used internally by ReflectiveInjector because its system-wide unique id allows the injector to store created objects in a more efficient way.

Key should not be created directly. ReflectiveInjector creates keys automatically when resolving providers.

Static properties

Property Description
static numberOfKeys: number Read-only.

Static methods

get()

Retrieves a Key for a token.
static get(token: Object): ReflectiveKey
      
      static get(token: Object): ReflectiveKey

Parameters

token

Type: Object.

Returns

ReflectiveKey

Constructor

Private
constructor(token: Object, id: number)
      
      constructor(token: Object, id: number)

Parameters

token

Type: Object.
id

Type: number.

Properties

Property Description
displayName: string Read-only.
token: Object Declared in constructor.
id: number Declared in constructor.