I've read two really interesting pieces of advice, recently: In the comments to this StackOverflow answer , @Mike Weller says to leave your asserts on in production code... what's the performance hit, really? Is there any reason NOT to leave them in? In Vincent Gable's blog , he states that you should prefer assert over NSAssert ... is there any reason NOT to use assert ? (it's less letters :))

NSAssert vs. assert: Which do you use, and when?

I've read two really interesting pieces of advice, recently:

In the comments to this StackOverflow answer, @Mike Weller says to leave your asserts on in production code... what's the performance hit, really? Is there any reason NOT to leave them in?
In Vincent Gable's blog, he states that you should prefer assert over NSAssert... is there any reason NOT to use assert? (it's less letters :))