[anaphor]

Sure, I was thinking on the order of <100 strings around 5-10 characters each at most. I agree that the TST is much better suited for large sets of strings. Also I think more developers should actually do the calculations even if they only have an estimate of how large the inputs will be.

[supo]

Ah, in that case it goes straight to set<string> for me :-) I think that in practice you want to do that but then drop in a few asserts to check whether things are not getting out of control once you forgot about this decision.