boost::bind overloaded operators

11 Jul 2012

      Hello, i have some questions:
1) Why min_element give me errors without BOOST_RANGE_ENABLE_CONCEPT_ASSERT
defined 0? Is it uses only for make error messages more readable? Is it   safe
to define it to 0?
#include <vector>
//#define BOOST_RANGE_ENABLE_CONCEPT_ASSERT 0
#include 
#include 
#include 
#include 
#include 

struct foo{
int x;
};

int main()
{
using namespace boost::adaptors; using boost::bind;

std::vector<foo> vec;
auto rng = vec | transformed(bind(&foo::x, _1));
boost::accumulate(rng, 0); // ok
boost::min_element(rng); // error
}

2) Why only logical operators overloaded for boost::bind and arithmetic one
are not? Is it safe to define it manually with BOOST_BIND_OPERATOR?

tolik levchik

Thomas Heller

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