Re: [Boost-users] Using lambda to count elements in list of lists

Daniel Lidström wrote:

for_each(ll.begin(), ll.end(), var(count)+=(_1).size());

This will not compile: (13): error C2039: 'size': is not a member of 'boost::lambda::lambda_functor<T>' Is this possible to do? Thanks in advance!

Yes, but you need binding syntax: typedef list< list< int > > lli; for_each(ll.begin(), ll.end(), var(count) += bind(&lli::size, _1)); Sebastian Redl