contains method

@override bool contains(Object? value)

Whether value is in the set.

final characters = <String>{'A', 'B', 'C'};
final containsB = characters.contains('B'); // true
final containsD = characters.contains('D'); // false

Implementation

@override
bool contains(Object? value) {
  for (E? entry in _entries) {
    if (entry == value) return true;
  }
  return false;
}