collect optimization ?

[wiiznokes]

I want to use this crate to normalize a search, so i have concern about the performance of .collect::<String>.

Is there a way to reuse the previous value, when possible ?

When i try .collect::<Cow<str>>, i always see Owned("...") in the debugger.

[Manishearth]

.collect() is a trait method so I don't think it can be optimized that way, but I'm open to there being other APIs for it if it doesn't end up being too complicated