[aleksiy123]

I'm fairly sure `open` is a generator and doesn't load the whole file into memory. So you wouldn't hit a memory error unless like you said the amount of unique words is high enough.

[t43562]

I think you're right but I believe that wrapping it in List(...) is where that would force the whole file into memory.

[aleksiy123]

Yeah, you're right, that's my mistake.

I think you can just omit it but yeah...