IReadOnlyObservableCollection.concat - Andrei15193/react-model-view-viewmodel GitHub Wiki

Merges the current collection with the given Array and returns a new JavaScript Array.

concat(
  ...items: readonly (TItem | readonly TItem[])[]
): TItem[]

Source reference: src/collections/observableCollections/IReadOnlyObservableCollection.ts:173.

• items (rest): readonly (TItem | readonly TItem[])[]
  The items to concatenate.

Returns a new Array containing the items of this collection followed by the items in the provided Array.

• Array.concat