函数型なんたらの集い関連 発表者抽選用

gistfile1.cpp

#include <iostream>
#include <sstream>
#include <vector>
#include <iterator>
#include <random>
#include <boost/assign/list_of.hpp>
#include <boost/range/algorithm/copy.hpp>
#include <boost/range/adaptor/indexed.hpp>
#include <boost/range/adaptor/transformed.hpp>

std::string to_string(const boost::tuple<int, std::string>& data)
{
    std::ostringstream str;
    str << data.get<0>() << ": " << data.get<1>();
    return str.str();
}

int main() {

    using namespace boost::adaptors;
    
    std::random_device rdev;
    std::mt19937 engine(rdev());
    
    std::vector<std::string> speakers = boost::assign::list_of
        ("its_out_of_tune")
        ("kmizu")
        ("masterq")
        ("ruicc")
        ("esehara")
        ("nobkz")
        ("pab_tech")
        ("xuwei_k");
    
    std::shuffle(speakers.begin(), speakers.end(), engine);
    
    boost::copy(
        speakers | indexed(1) | transformed(to_string),
        std::ostream_iterator<std::string>(std::cout, "\n"));
    
    return 0;
}