IReadOnlyObservableCollection.findLast

API / IReadOnlyObservableCollection<TItem> / findLast method

This method has multiple overloads.

---

Returns the last item that satisfies the given condition.

findLast<TContext>(
  predicate: (this: TContext, item: TItem, index: number, collection: this) => boolean,
  thisArg?: TContext
): undefined | TItem

Source reference: src/collections/observableCollections/IReadOnlyObservableCollection.ts:155.

Generic Parameters

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

Parameters

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

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

Returns: undefined | TItem

Returns the last item for which the provided predicate evaluates to true; otherwise undefined.

See also

• Array.findLast

---

Returns the last item that satisfies the given condition.

findLast<TResult, TContext>(
  predicate: (this: TContext, item: TItem, index: number, collection: this) => item is TResult,
  thisArg?: TContext
): undefined | TResult

Source reference: src/collections/observableCollections/IReadOnlyObservableCollection.ts:165.

Generic Parameters

• TResult - The type of item to return.

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

Parameters

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

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

Returns: undefined | TResult

Returns the last item for which the provided predicate evaluates to true; otherwise undefined.

See also

• Array.findLast