id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
5142,type_erased feels unnecessary.,Akira Takahashi <faithandbrave@…>,Neil Groves,"type_erased Range Adaptor is in release brunch of Boost 1.46.0, but I feel that this is unnecessary.
It is enough if there is any_range:
{{{
#include <iostream>
#include <vector>
#include <boost/assign/list_of.hpp>
#include <boost/range/any_range.hpp>
#include <boost/range/algorithm/for_each.hpp>
#include <boost/range/adaptor/filtered.hpp>

typedef boost::any_range<
    int
  , boost::forward_traversal_tag
  , int
  , std::ptrdiff_t
> integer_range;

void disp(int x)
{
    std::cout << x << std::endl;
}

void disp_all(integer_range r)
{
    boost::for_each(r, disp);
}

bool is_even(int x)
{
    return x % 2 == 0;
}

int main()
{
    const std::vector<int> v = boost::assign::list_of(1)(2)(3)(4)(5);

    disp_all(v | boost::adaptors::filtered(is_even));
}
}}}
Even if there is few it, I feel that I am premature to include it in 1.46.0 official release.",Bugs,closed,To Be Determined,range,Boost Release Branch,Problem,invalid,,