Re: [Boost-users] How to call STL map.second in boost lambda?

I have this compile error: I did this: std::for_each(map.begin(), map.end(), bind( &BlockList::sortY, this, *bind(&MyMap::value_type::second, _1))); ../BlockList.cpp:769: error: no matching function for call to ‘bind(<unknown type>, const BlockList* const, const boost::lambda::lambda_functorboost::lambda::contentsof_action, boost::tuples::tuple >, boost::tuples::tuple, BlockDataList*>::* const, const boost::lambda::lambda_functor

, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type> > , boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type> > >)’ make: *** [BlockList.o] Error 1

--- Kevin Heifner wrote:

yinglcs2@yahoo.com wrote:

...

I have a for loop which pass the map.second to a function, like this: class A; typedef map MyMap;

sortY(A& a);

for (MyMap::iterator iter = map.begin(); iter != map.end(); ++iter) { A *a = (*iter).second;

sortY(*a); }

how can I translate the above for() loop into for_each and use boost lambda?

I didn't test the following, but it should work :)

#include #include

using boost::lambda::_1; using boost::lambda::bind;

std::for_each(map.begin(), map.end(), bind(&sortY, *bind(&MyMap::value_type::second, _1)));

KevinH -- Kevin Heifner heifner @ ociweb.com http://heifner.blogspot.com Object Computing, Inc. (OCI) www.ociweb.com _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org

http://lists.boost.org/mailman/listinfo.cgi/boost-users

__________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com