[kungtotte]

I absolutely agree that performance matters a whole lot, it's one of the most important considerations in software.

It's also true that many developers are not very good at spotting where and how to improve performance, and what trade-offs are appropriate, and that's what I meant.

Write the straightforward version first that's easy to read so that when you need to improve performance, it's easy to use a profiler to go in and rewrite the non-performant parts in a less readable but faster way.