Im compiling in an environment which #includes <boost::bind.hpp>, so I can't get
away from it! I'd like to use Boost.Lambda sometimes, but run into namespace clashes.
This code snippet works...
#include <boost/lambda/lambda.hpp>
#include <boost/lambda/bind.hpp>
#include <boost/range.hpp>
#include <vector>
#include <numeric>
// and also this...
#include <boost/bind.hpp>
struct X
{
int f( ) const { return 1; }
};
int sum( int a, int b ) { return a + b; }
int main( )
{
boost::lambda::placeholder1_type x;
boost::lambda::placeholder2_type y;
std::vector<X> v;
std::accumulate( boost::begin( v ), boost::end( v ), 0, bind( sum, x, bind( &X::f, y ) ) );
}
but as soon as I extract the innermost bind into a Boost.Function, I seem to need to fully
qualify all the binds, ie
int main( )
{
boost::lambda::placeholder1_type x;
boost::lambda::placeholder2_type y;
std::vector<X> v;
boost::function<int(int, int)> my_sum = bind( sum, x, y );
std::accumulate( boost::begin( v ), boost::end( v ), 0, boost::lambda::bind( my_sum, x, bind( &X::f, y ) ) );
}
Is there any easy way around this? It would be nice to able to name my inner binds in a meaningful way, but all the
explicit qualification gets a bit cumbersome!
Thx
- Rob.