[Rant] Indexing into ArraySlice

[Letan (Letanyan Arumugam)]

@hooman

Adding offset-based APIs to Collection opens the door for abuse. Performance characteristic of offset operations for non-random access collections can be extremely poor. Having a very easy to (ab)use offset API on them will steer people towards writing bad code. That is why I am limiting my suggestion to RandomAccessCollection .

This was discussed in that thread. From here down through about 10 posts (not all the posts in between are about the performance).