is there a nice way to get from a Set<String?&g...

# announcements

[Bernhard]

is there a nice way to get from a Set<String?> to a Set<String> then?

[Shawn]

you could filter and then perform an unchecked cast if performance is of utmost priority

[Bernhard]

what's the type safe solution?

[Shawn]

set.filterNotNull().toSet() is concise enough, but decidedly not as performant if your data size is real large

[Shawn]

it is less error-prone, however

[Bernhard]

can you use that in a sequence as well?

[Bernhard]

flatmap it?

[Bernhard]

ah, forget it 🙂

[Bernhard]

thanks

[fred.deschenes]

you can also do .filterNotNullTo(mutableSetOf()) to prevent the set->list->set thing