range-v3 how to action::join with delimiter

Question

I get range-v3 for MSVC from git. And compile by MSVC C++14 compiler.

Consider code:

auto getter2 = [](const std::string&r) { return r+r; };
std:         


        

Answer 1

Guessing: A string literal isn't a range. Try passing std::string(",") or view::c_str(",") to view::join instead.

UPDATE: Ah. Try this instead (tested with clang trunk):

#include <range/v3/all.hpp>
#include <vector>
#include <iostream>
int main()
{
    using namespace ranges;
    std::vector<std::string> vv = { "11","22", "33" };
    auto getter2 = [](auto&r) { return view::concat(r, r); };

    std::cout << (vv | view::transform(getter2) 
                     | view::join(',')
                     | to_<std::string>()) << std::endl;
    return 0;
}