The F# developer center is now live, along with the September 2008 F# CTP.

What is F#?

Don Syme describes it as:

F# is a simple, type-safe, efficient, scalable language for the .NET platform that supports both functional and object-oriented programming. One of the key things about F# is that it spans the spectrum from interactive, explorative scripting to component and large-scale software development. In this release we’ve made major improvements to the language, libraries and tools across this spectrum.

In other words, F# is a functional language for the .NET Framework.

Functional languages have succinct, expressive, and compositional style that have their origins in lambda calculus.

F# provides all the benefits of functional programming on top of the familiar of .NET runtime, libraries, interoperability, and object models.

Here are some great F#/Functional Programing resources:

• F# in 20 Minutes - Tutorial Part I
  Tutorial, introducing the reader into the new world of F#.
• Learn F#
  Get resources for learning F#, including articles, videos, and books. Three sample chapters of the Expert F# book are also available for preview.
• Don Syme's blog
  Don Syme is one of the brilliant minds behind F#
• Don Syme explains F# on Channel 9
  An introduction to F#, Channel 9 Style
• Microsoft Research page on F#
  F# originated at Microsoft Research, so read about F# right from the source.
• hubFS: THE place for F#
  Ask questions, post answers, and participate in the F# community at the F# forums on hubFS.net.
• F# Wikipedia entry
• Functional Programming Wikipedia Entry

I look forward to the day when a recruiter calls me about opportunities for "F Pound" developers. ;)