[Boost-users] [Bind] How do you write it?

23 Mar 2010

      Hi All

Ok, now I've found out what is really stopping my real code working.

In this example my problem is that method has defaulted arguements, which I
think mucks up bind's signature matching. Is there an easy way round this,
or
must I just add appropriate overloads of double_it to A?

Thanks, Rob.

#include <algorithm>
#include <vector>
#include "boost/bind.hpp"

struct A
{
    int double_it( int i, int j = 2 ) { return i * j; }
} a;

std::vector< int > v;

int main( )
{
    for ( std::vector< int >::iterator i = v.begin( ); i != v.end( ); ++ i )
    {
        a.double_it( * i );
    }

    // Write it as a for_each/bind
    std::for_each( v.begin(), v.end(), boost::bind( & A::double_it,
boost::ref( a ), _1 ) );
}

-- 
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[Boost-users] [Bind] How do you write it?

Robert Jones