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I love the comment on here:

"I do believe that there is real value in pursuing functional programming, but it would be irresponsible to exhort everyone to abandon their C++ compilers and start coding in Lisp, Haskell, or, to be blunt, any other fringe language. To the eternal chagrin of language designers, there are plenty of externalities that can overwhelm the benefits of a language, and game development has more than most fields."

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I disagree. Of course not _everybody_ can abandon C++ but some really can. I have developed C and C++ software for many years but with Racket Scheme (a functional language) I am MUCH more productive now. This works because I think and code functionally which is a totally different approach to the way how coding in C++ is done.

I doubt that functional programming in C++ will be as elegant and effective as in a real functional language where everything is functional. The approach of C++ seems to be and to support "everything". But will that support more maintainable code? I don't think so. Quo vadis, C++?

Btw Implementations like LuaJIT demonstrate that virtual machines have become amazingly fast. So, even for performance you don't need to be stuck to C++.

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