RE: [Boost-Users] function object with lambda

-----Original Message----- From: Jaakko Jarvi [mailto:jajarvi@cs.indiana.edu] <snip>

...

Any clues?

There seems to be two things. First, LL can't deduce the return type of gen_long() call. That is a bit odd, as the class seems to define result_type, which should be enough. Anyway, that can be fixed with

bind<long>(gen_long)

Then your gen_long is a stateful object, and the operator() is not defined as const. Lambda functors store all arguments by default as const copies. You must thus tell the library to store a reference to your original function object:

bind<long>(ref(gen_long))

var does just as well:

bind<long>(var(gen_long))

Cheers, Jaakko

Beautiful. Thanks mate. Matt.