Functional Programming in C++

Question

Can someone guide me how do functional programming in C++? Is there some good online material that I can refer?

Please note that I know about the library FC++. I want to

Answer 1

Update August 2014: This answer was posted in 2009. C++11 improved matters considerably for functional programming in C++, so this answer is no longer accurate. I'm leaving it below for a historical record.

Since this answer stuck as the accepted one - I'm turning it into a community Wiki. Feel free to collaboratively improve it to add real tips on function programming with modern C++.

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You can not do true functional programming with C++. All you can do is approximate it with a large amount of pain and complexity (although in C++11 it's a bit easier). Therefore, this approach isn't recommended. C++ supports other programming paradigms relatively well, and IMHO should not be bent to paradigms it supports less well - in the end it will make unreadable code only the author understands.