retainWhere method

void retainWhere(
  1. bool test(
    1. String name
    )
)
inherited

Removes all elements of this set that fail to satisfy test.

final characters = <String>{'A', 'B', 'C'};
characters.retainWhere(
    (element) => element.startsWith('B') || element.startsWith('C'));
print(characters); // {B, C}

Implementation

void retainWhere(bool test(String name)) {
  modify((s) => s.retainWhere(test));
}