Re: [bind] does bind do overload resolution?

From: Greg Hawkins (yg-boost-users_at_[hidden])
Date: 2002-09-02 15:32:43

You need to supply the disambiguation yourself with an explicit cast:

boost::bind((bool (part::*)(int))&part::is, _1, x)

or

boost::bind((bool (part::*)(std::string))&part::is, _1, x)

Haven't tried it on Borland though...

best,
Greg

Alex Henderson wrote:
> Hi, 
> 
> I'd like boost::bind to use overloaded member functions, but get an
> internal compiler error. Does bind support overload resolution, or is
> my compiler at fault? (...or more likely the code!)
> 
> system = C++Builder 5 (patched), Win2k, boost_1_28_0
> example (simplified) code below 
> 
> Thanks, 
> Alex
> //--------------------------------------------------------------------
> -------
> 
> #include <string>
> #include <vector>
> #include <iostream>
> #include <boost/bind.hpp>
> 
> //--------------------------------------------------------------------
> -------
> 
> struct part
> {
>     std::string name;
>     int id;
>     part(std::string name, int id) : name(name), id(id) {}
>     bool is(int test) { return id == test; }
> //    bool is(std::string test) { return name == test; } // uncomment
> for error };
> //--------------------------------------------------------------------
> -------
> 
> int main()
> {
>     int x = 6;                    // swap comments here for error //  
>  std::string x("handle");    // swap comments here for error
> 
>     std::vector<part> parts;
>     part a("top", 3); parts.push_back(a);
>     part b("spout", 6); parts.push_back(b);
>     part c("handle", 9); parts.push_back(c);
> 
>     std::vector<part>::iterator it =
>     std::find_if(parts.begin(), parts.end(), boost::bind(&part::is,
>     _1, 
> x));
> 
>     std::cout << it->name << std::endl;
> 
>     return 0;
> }
> //--------------------------------------------------------------------
> -------
> 
> 
>