SplayTreeSet<E>.of constructor Null safety
Creates a SplayTreeSet from elements.
The set works as if created by new SplayTreeSet<E>(compare, isValidKey).
All the elements should be valid as arguments to the compare function.
Implementation
factory SplayTreeSet.of(Iterable<E> elements,
[int Function(E key1, E key2)? compare,
bool Function(dynamic potentialKey)? isValidKey]) =>
SplayTreeSet(compare, isValidKey)..addAll(elements);