ReadOnlyObservableCollection.findIndex - Andrei15193/react-model-view-viewmodel GitHub Wiki

Returns the index of the first item that satisfies the given condition.

public findIndex<TContext = void>(
  predicate: (this: TContext, item: TItem, index: number, collection: this) => boolean,
  thisArg?: TContext
): number

Source reference: src/collections/observableCollections/ReadOnlyObservableCollection.ts:572.

• TContext - The context type in which the callback is executed.

  Default value: void.

• predicate: (this:TContext, item:TItem, index:number, collection:this) => boolean
  The callback performing the item check.

• thisArg: TContext
  A value to use as context when evaluating items.

Returns the index of the first item for which the provided predicate evaluates to true; otherwise -1.

• Array.findIndex