Method clear

packages/forms/src/model/form_array.ts:498–503

* Remove all controls in the `FormArray`. * * @param options Specifies whether this FormArray instance should emit events after all * controls are removed. * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and * `valueChanges` observables emit even

(options: {emitEvent?: boolean} = {})

   * ```
   */
  clear(options: {emitEvent?: boolean} = {}): void {
    if (this.controls.length < 1) return;
    this._forEachChild((control) => control._registerOnCollectionChange(() => {}));
    this.controls.splice(0);
    this.updateValueAndValidity({emitEvent: options.emitEvent});
  }

  /**
   * Adjusts a negative index by summing it with the length of the array. For very negative