> Learning curve is pretty steep though

Do you mean it gets difficult, or that progress gets fast?

It gets difficult. F# has pretty much everything from every other functional language. Even though F# is very consistent language. There are a lots of concepts to understand.

No, it has just a few concepts that if taken seriously (i.e. don't try to write imperative/prescriptive code) will lead to the natural discovery of many of its other features (or you'll end up inventing them yourself).

I am talking about continuations and workflows -> these concepts are not that straight forward, especially if you are coming in from imperative programming background.

Fair enough. What I mean is that F# (and Haskell) can be useful without knowing about Workflows (and Monads). By the time you find yourself needing them you'd either invent them (fairly easily) or find them... It's not much harder than INNER JOIN in SQL which I also think most people would eventually invent if the language didn't have it.

Could also be the very new state of it with lack of good documentation.

And the lack of existing code to take cues from. I looked at F# earlier in the year, and this was the thing that tripped me up the most. I can wrap my head around functional programming "in the small" pretty easily, but I'm pretty stumped about how to put together a full application.