Why not use exceptions as regular flow of control?

Question

To avoid all standard-answers I could have Googled on, I will provide an example you all can attack at will.

C# and Java (and too many others) have with plenty of ty

Answer 1

Here are best practices I described in my blog post:

• Throw an exception to state an unexpected situation in your software.
• Use return values for input validation.
• If you know how to deal with exceptions a library throws, catch them at the lowest level possible.
• If you have an unexpected exception, discard current operation completely. Don’t pretend you know how to deal with them.