Viewing profile — bob8

I did not say Vivaldi was slow, just that performance is relevant in UI. I'll give Vivaldi a try.

UI is very latency sensitive, even a couple of frames of delay can be detrimental to the feel of a UI.

Can't you have a regular vector and place the place the appended items on the even indices and prepended items on the odd? If you keep count of how many prepended and appended item…