Re: [Boost-users] [bind] Surprising behavior

From: Christian Henning (chhenning_at_[hidden])
Date: 2007-04-16 16:20:58

Thanks Peter, this makes sense. But just image I cannot change the
print function's interface. For example I have to interface with MFC's
CComboBox::AddString( LPCTSTR lpszString ) . Do you think there is
still a way to have just one for_each() loop? My guts tell me no.

Thanks again,
Christian

On 4/16/07, Peter Dimov <pdimov_at_[hidden]> wrote:
> Christian Henning wrote:
>
> >   for_each( as.begin()
> >           , as.end()
> >           , bind( &print
> >                 , bind( &std::string::c_str
> >                       , bind( &A::name, _1 ))));
>
> The problem here is that A::name returns a temporary std::string; the code
> is similar to
>
>     char const * s = it->name().c_str();
>     print( s );
>
> Since the temporary std::string is destroyed, s remains dangling. One way of
> avoiding the problem is to make print() take a std::string instead of a
> char*.
>
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