Re: [Boost-users] [mpl] Alternative to for_each that passes the function object by reference (WAS: Doc for for_each)

Hendrik Belitz wrote:

I'd like to address a problem I just encountered on using mpl::for_each (Boost 1.33). Similar to Scott, I implemented a stateful functor that should be called for all types in a mpl::vector<>. for_each is no option, since it passes the functor by value

I slapped a boost::ref around the functor, and that worked fine for me. I suggest you try the same thing and see if that works for you. Scott