SplayTreeSet<E>.from constructor
Creates a SplayTreeSet that contains all elements
.
The set works as if created by SplayTreeSet<E>(compare, isValidKey)
.
All the elements
should be instances of E
and valid arguments to
compare
.
The elements
iterable itself may have any element type, so this
constructor can be used to down-cast a Set
, for example as:
Set<SuperType> superSet = ...;
Set<SubType> subSet =
SplayTreeSet<SubType>.from(superSet.whereType<SubType>());
Example:
final numbers = <num>[20, 30, 10];
final setFrom = SplayTreeSet<int>.from(numbers);
print(setFrom); // {10, 20, 30}
Implementation
factory SplayTreeSet.from(Iterable elements,
[int Function(E key1, E key2)? compare,
bool Function(dynamic potentialKey)? isValidKey]) {
if (elements is Iterable<E>) {
return SplayTreeSet<E>.of(elements, compare, isValidKey);
}
SplayTreeSet<E> result = SplayTreeSet<E>(compare, isValidKey);
for (var element in elements) {
result.add(element as dynamic);
}
return result;
}