Peter Dimov wrote:
Jonathan Turkanis wrote:
<Arturo_Cuebas@bpmicro.com> wrote in message news:OF6215D845.F05336EF-ON86256EF3.005F9390-86256EF3.00613932@bpmicro.com...
I can do it with this syntax:
boost::resolve_cast<int()>(&C::g); boost::resolve_cast<int(int)>(&C::g);
using function types as in Boost.Function. Your version would be the 'portable syntax'.
Is there a name better than resolve_cast?
Sounds okay to me.
This was tested only in VC7.1.
You need to add &'s to former member function pointers. Otherwise it looks okay to me. My version works on VC7.1, Como 4.3.3 and GCC 3.2. I'll post it if there's interest.
template<class F, class X> F X::* resolve_cast( F X::* pm ) { return pm; }
looks like it ought to work. VC 7.1 doesn't like it, though. Neither does GCC 3.2.3. The online Comeau compiles it. _______________________________________________
How about having two or three more functions: mem_fn1, mem_fn2, mem_fn3 When you want a certain overload, you specify those parameters that differenciate it from the other overloads, like: class X { 1 void f(char); 2 int f(int); 3 int f(int, int); 4 int f(int, long); 5 int f(int, int, int); 6 long f(int, char, long); }; mem_fn1<void>(&X::f); // selects 1 mem_fn2<any_param,any_param,int>(&X::f); // selects 3 mem_fn3<long>(&X::f); // selects 6 mem_fn3<int>(&X::f); // selects 5 Best, John -- John Torjo Freelancer -- john@torjo.com Contributing editor, C/C++ Users Journal -- "Win32 GUI Generics" -- generics & GUI do mix, after all -- http://www.torjo.com/win32gui/ -- v1.3beta released - check out splitter/simple_viewer, a File Explorer/Viewer all in about 200 lines of code! Professional Logging Solution for FREE -- http://www.torjo.com/code/logging.zip (logging - C++) -- http://www.torjo.com/logview/ (viewing/filtering - Win32) -- http://www.torjo.com/logbreak/ (debugging - Win32)