Method isSelected

src/cdk/collections/selection-model.ts:126–128

* Determines whether a value is selected.

(value: T)

   * Determines whether a value is selected.
   */
  isSelected(value: T): boolean {
    return this._selection.has(this._getConcreteValue(value));
  }

  /**
   * Determines whether the model does not have a value.