Ask HN: What are some ideas about software performance that are now outdated?

2 pointsalexvoda3 comments

Prompted by a comment on HN (1), I bagan to wonder, what are other examples of outdated advice regarding software performance? What about other aspects of programming? What changed between the time of the old advice and the new advice?

(1) https://news.ycombinator.com/item?id=25209932

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In C/C++, many people still think that pre-increment is faster than post-increment...

Was it ever true? If so, why? If not, where did this start? What changed since then?

I don't know if it ever was true... it'd be an interesting project to figure out where this urban legend came from.

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