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This is the archived documentation for Angular v17. Please visit angular.dev to see this page for the current version of Angular.

IterableDiffers

A repository of different iterable diffing strategies used by NgFor, NgClass, and others.

      
      class IterableDiffers {
  static create(factories: IterableDifferFactory[], parent?: IterableDiffers): IterableDiffers
  static extend(factories: IterableDifferFactory[]): StaticProvider
  constructor(factories: IterableDifferFactory[])
find(iterable: any): IterableDifferFactory }

Provided in

  • 'root'

Static methods

      
      static create(factories: IterableDifferFactory[], parent?: IterableDiffers): IterableDiffers
    
Parameters
factories IterableDifferFactory[]
parent IterableDiffers

Optional. Default is undefined.

Returns

IterableDiffers

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

      
      static extend(factories: IterableDifferFactory[]): StaticProvider
    
Parameters
factories IterableDifferFactory[]
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 IterableDiffer available.

      
      @Component({
  viewProviders: [
    IterableDiffers.extend([new ImmutableListDiffer()])
  ]
})
    

Constructor

      
      constructor(factories: IterableDifferFactory[])
    
Parameters
factories IterableDifferFactory[]

Methods

      
      find(iterable: any): IterableDifferFactory
    
Parameters
iterable any
Returns

IterableDifferFactory