ReadOnlyObservableCollection.unshift

API / ReadOnlyObservableCollection<TItem> / unshift method

Inserts new elements at the start of the collection, and returns the new length of the collection.

protected unshift(
  ...items: readonly TItem[]
): number

Source reference: src/collections/observableCollections/ReadOnlyObservableCollection.ts:779.

Parameters

• items (rest): readonly TItem[]
  Elements to insert at the start of the collection.

Returns: number

The new length of the collection.

See also

• Array.unshift