retainWhere method

  1. @override
Future<void> retainWhere(
  1. bool test(
    1. E element
    )
)
override

Async removes all elements from the set that doesn't satisfy the test.

Implementation

@override
Future<void> retainWhere(bool Function(E element) test) async {
  return Future<void>(() => throw UnsupportedError('Unmodifiable operation'));
}