toNullable method
T?
toNullable()
Creates a T?
value from this
. Useful when converting a value and
passing it as argument where a nullable type is expected, e.g.,
third-party libraries that expect nullable types.
Anti-patterns
This method should not be used to match only the Some case, e.g.:
final Option<int> option = Some(22);
final nrOfApples = option.toNullable();
if (nrOfApples != null) {
print(nrOfApples);
}
Instead, use pattern matching for that:
final Option<int> option = Some(22);
if (option case Some(v: final nrOfApples)) {
print(nrOfApples);
}
Implementation
T? toNullable() => switch (this) {
Some(:T v) => v,
None() => null,
};