mapNotNull<R> method
Returns a list of all non-null items returned by applying predicate
on the items of this
list.
Implementation
List<R> mapNotNull<R>(R? Function(E) predicate) {
final result = <R>[];
for (final it in this) {
final mapped = predicate(it);
if (mapped != null) result.add(mapped);
}
return result;
}