A couple of months ago I was talking to Lou Franco, the head of our Software Engineering department and fellow functional programming enthusiast, about the possibility of using F# for projects in the future.  Being business minded, he replied that he would need a compelling reason to bring F# on board.  This presentation is dedicated to ...

When you are handed a string, integer, or any value type, can you know what it really represents?  Can you define the range of appropriate behaviors for that data?  Can you tell if it's formatted correctly?   The problem is, in all of these cases, you can't.  You can't be sure of it's meaning, it's format or even how to ...