Scott, Scott Meyers writes:
Having written code using a stateful functor with mpl::for_each and observing that side effects were not taking place, I went to http://www.boost.org/libs/mpl/doc/refmanual/refmanual_toc.html to confirm my suspicion that the functor was being passed by value. But there appears to be no documentation for mpl::for_each (neither in the HTML version of the reference manual nor in the PDF version). I ultimately confirmed my suspicion by looking at the header file, but is there a reason why for_each seems to be documented only in the printed book?
It was (accidentally) missed out. It's fixed in 1.34 release; meanwhile, the page can be accessed online at http://tinyurl.com/2f3zvv (http://boost.cvs.sourceforge.net/*checkout*/boost/boost/libs/mpl/doc/refmanual/for-each.html?revision=1.1.2.1&pathrev=RC_1_34_0) HTH, -- Aleksey Gurtovoy MetaCommunications Engineering