split method
Splits the collection into two subsets.
Every element for which selector
returns true is added to the
Tuple.a list, otherwise it is added to the Tuple.b list.
Implementation
Tuple<List<TValue>, List<TValue>> split(bool Function(TValue) selector) {
final collections = Tuple<List<TValue>, List<TValue>>([], []);
forEach((element) {
final collection = selector(element) ? collections.a : collections.b;
collection.add(element);
});
return collections;
}