I'm sure Steve can provide better sources than me, but the discussion here (and at the first link from the reddit page) look relevant: https://www.reddit.com/r/

I'm sure Steve can provide better sources than me, but the discussion here (and at the first link from the reddit page) look relevant: https://www.reddit.com/r/rust/comments/2slcs8/small_string_optimization_remove_as_mut_vec/ https://www.reddit.com/r/rust/comments/2slcs8/small_string_o... Edit: this was supposed to be a response to the other response to Steve’s comment. On my phone now, can’t easily edit.