[boost] [variant] match()

Boost.Variant provides access through get() and visitors, but in C++11 we can do so much better! :) For a boost::variant, the attached small utility function match() lets you write: match(v, [](A & a){ cout << "it's a A!"; } [](B & b){ cout << "oh, a B!"; } [](C & c){ cout << "ah yes, a C!"; }); Return values are supported. I think this really belongs in Boost. It makes variants much more usable. Regards, Eelis P.S. I have not attempted a C++98 implementation. P.S.2. Right after finishing my implementation, I discovered another, /vastly/ more complex implementation of the same thing: https://github.com/exclipy/inline_variant_visitor I'm not sure its complexity gives that implementation any advantages.