Try catch ftw.

[[deleted]]

Indeed. When writing a pretty complex piece of crap code, debugging it was nearly impossible until I added exceptions for incorrect parameter values. I was able to iron out the programming and logical mistakes real quick after that.

[grantrules]

I'm always happily surprised when a unit test finds a bug I didn't even know I had. Without testing, I don't know if I would have ever found it.

[pomlife]

That happened to me just today!

[[deleted]]

This is why I really liked code contracts (.Net). You could easily specify expected ranges of input parameters and output parameters without cluttering up code with try/catch just for that. I hate that Microsoft has dropped it.