Re: [Boost-users] [Boost][lambda] Newbie Questions: member pointer operator use

30 Jun 2005


      Brian Allison wrote:
...
...    for_each(src.begin(), src.end(),
            if_then(  bind<bool>(&vector::empty, &var(dst)),
                      bind<void>(&vector::push_back, &var(dst), 
_1) ) );
isn't it equal to:

    if(dst.empty()) { dst.push_back(src.front()); }

? The sample is for training purposes?
...
for_each(src.begin(), src.end(),
            if_then(bind<bool>(&vector::empty, &var(dst)),
                    (&var(dst) ->* &vector::push_back)(_1)
                )
            );
In either previous and in this case mere '&dst' should be used instead 
of '&var(dst)' without '(_1)' perhaps.

Re: [Boost-users] [Boost][lambda] Newbie Questions: member pointer operator use

Roman Krylov