[anon5_]

The obvious answer is Haskell.

It is the only logical language that exists. Anyone who doesn't know it just hurting themselves.

After you master functional programming, you will be able to use it in EVERY other language.

You can even program ruby on rails functionally.

If anyway says anything negative about functional programming - they're just not dedicated or intelligent enough to understand its' abstract concepts.

In a world filled with hurt feelings and thin skin - finally seeing the logical essence of code is a transcendent experience.

[veddox]

That has got to be a troll post. Nonetheless, on the danger of starting a flame war, here is a brief answer:

No, Haskell is not the obvious language. Though no doubt a very nice language, it is nowhere near the top of the most commonly used languages. Thus, it's money-making potential (in terms of available jobs) is pretty low - which seems to be the main factor the OP is interested in.

As for functional programming: much as I love it, it is not the non-plus-ultra answer to life, the universe and everything. And even if it were, there are other languages that are also functional; all the various Lisp dialects to start with.

And by the way, please refrain from personal attacks on HN.