At least I do :grinning:

# announcements

[sreich]

At least I do 😀

[mg6maciej]

sreich: Do you use mutableListOf instead of hashSetOf. That's not good performance choice! You bad, bad developer 😉

[sreich]

🤣

[sreich]

Is the performance actually any different? I don't see how they could be

[mg6maciej]

contains

[sreich]

That's not correct. mutableListOf is literally an if (size not 0) ArrayList() else ArraysAsCollection (..)

[mg6maciej]

Yes. Lists have O(n) contains, Sets and Maps if implemented and used correctly are O(1).

[sreich]

Oh duh, I misunderstood what your original point was