count method
Returns the number of entries that matches the test
.
If test
is not specified it will count every entry.
Example:
[1, 2, 3, 13, 14, 15].count(); // 6
[1, 2, 3, 13, 14, 15].count((n) => n > 9); // 3
Implementation
int count([bool Function(MapEntry<K, V> element)? test]) {
return entries.count(test);
}