I really need to take some time to learn F# and really get into functional programming. Now that F# is going to be widely available on Mac and Linux as well as Windows, it is a lot more interesting.

@Dashrender said:

I guess I'm going to have to look this up, I've never heard of Functional Programming.

It's pretty big today. In general, though, people aren't switching to F# or Haskell. Instead they use the new functional extensions in C# or other languages to mix functional and procedural elements together to make it far easier for non-functional programmers to add functional elements without being unable to program normally.