Sergey is writing a book and making draft chapters available for review. Here are sSome tried-and-true, well-illustrated and entertaining tips:

C++ Performance: Common Wisdoms and Common "Wisdoms"

by Sergey Ignatchenko

From the draft chapter intro:

The opposite of a fact is falsehood, but the opposite of one profound truth may very well be another profound truth. — Niels Bohr

There are quite a few common wisdoms when it comes to C++ and games. As it always the case when facing a bunch of common wisdoms, some of them have their merits, some are obsolete-beyond-belief, and some are just taken from a very different context and are not really applicable. Let’s take a look at the most popular ones...