W3cubDocs

/Angular

KeyValueDiffers

class final

A repository of different Map diffing strategies used by NgClass, NgStyle, and others.

class KeyValueDiffers {
  static create<S>(factories: KeyValueDifferFactory[], parent?: KeyValueDiffers): KeyValueDiffers
  static extend<S>(factories: KeyValueDifferFactory[]): StaticProvider
  constructor(factories: KeyValueDifferFactory[])
  factories: KeyValueDifferFactory[]
  find(kv: any): KeyValueDifferFactory
}

Provided in

  • 'root'

Static methods

static create<S>(factories: KeyValueDifferFactory[], parent?: KeyValueDiffers): KeyValueDiffers

Parameters
factories KeyValueDifferFactory[]
parent KeyValueDiffers

Optional. Default is undefined.

Returns

KeyValueDiffers

Takes an array of KeyValueDifferFactory and returns a provider used to extend the inherited KeyValueDiffers instance with the provided factories and return a new KeyValueDiffers instance.

static extend<S>(factories: KeyValueDifferFactory[]): StaticProvider

Parameters
factories KeyValueDifferFactory[]
Returns

StaticProvider

Usage Notes

Example

The following example shows how to extend an existing list of factories, which will only be applied to the injector for this component and its children. This step is all that's required to make a new KeyValueDiffer available.

@Component({
  viewProviders: [
    KeyValueDiffers.extend([new ImmutableMapDiffer()])
  ]
})

Constructor

constructor(factories: KeyValueDifferFactory[])

Parameters
factories KeyValueDifferFactory[]

Properties

Property Description
factories: KeyValueDifferFactory[]

Deprecated v4.0.0 - Should be private.

Methods

find(kv: any): KeyValueDifferFactory

Parameters
kv any
Returns

KeyValueDifferFactory

© 2010–2021 Google, Inc.
Licensed under the Creative Commons Attribution License 4.0.
https://angular.io/api/core/KeyValueDiffers