"Tom.Amundsen"
How long did it take you to become proficient in Haskell?
Ten years and still working on it.
By that, I mean - how long until you were just as comfortable with Haskell as you were with your strongest language at that time?
Hm, I'm tempted to rephrase that question as how long before I'd forgotten enough C++... Seriously, learning to think functionally wasn't so hard, and I was relatively quickly able to write useful programs. The challenge with Haskell is that it is very open-ended, there are so many constructs and paradigms that you feel you should learn, but which require a lot of effort first to understand, and even more so to internalize into your programming-fu. When I left C++, the debates were mostly around diagrams and what shape boxes and arrows representing different concepts should have. Now its all comonads and endofunctors and hylomorphisms. (Thankfully, it's possible to ignore topics in any language :-) -k -- If I haven't seen further, it is by standing in the footprints of giants