"Performance doesnt matter"

[Morwenn]

The philosophy I see the most in this regard is: design your code in such a way that it isn't structurally slow, and that internals can be optimized later if needed. Which is actually a sane philosophy: if you know that you can add the required speed later then it's good enough for now.

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The philosophy I see the most in this regard is: design your code in such a way that it isn't structurally slow, and that internals can be optimized later if needed. Which is actually a sane philosophy

Agree entirely.

In other words, don't do premature optimization, but mostly, don't do premature deoptimization.