retainWhere method
Removes all objects from this list that fail to satisfy test
.
An object o
satisfies test
if test(o)
is true.
var numbers = ['one', 'two', 'three', 'four'];
numbers.retainWhere((item) => item.length == 3);
numbers.join(', '); // 'one, two'
The list must be growable.
Implementation
@override
void retainWhere(bool Function(T element) test) {
super.value.retainWhere((e) {
if (test(e)) {
return true;
}
return false;
});
if (notifyOnChangeList) {
notifyListeners();
}
}