some c++11 testing

test.cpp

//compile with:
//g++ -std=c++11 -o test test.cpp
#include <iostream>
#include <map>
#include <vector>

typedef std::vector<std::string> StrVec;
typedef std::map<std::string, StrVec > MapStr2Vec;
MapStr2Vec mmap;

template <class M, class K, class V>
void add_to_map(M& m,
                 const K& key, 
                 const V& str) {
  if(  m.find(key)  == m.end()) {
    StrVec v;
    v.push_back(str);
    m[key]=v;
  } else {
    (m[key]).push_back(str);
  }
}

int main(){
  add_to_mmap<MapStr2Vec,std::string, std::string>(mmap,"foo","bar");
  add_to_mmap<MapStr2Vec,std::string, std::string>(mmap,"foo","baz");
  add_to_mmap<MapStr2Vec,std::string, std::string>(mmap,"kat","baz");
  add_to_mmap<MapStr2Vec,std::string, std::string>(mmap,"kat","baz");
  add_to_mmap<MapStr2Vec,std::string, std::string>(mmap,"kat","pow");
  
  for(auto itr = mmap.begin(); itr != mmap.end(); ++itr){
    std::cout << "Key: " << (*itr).first << std::endl;
    auto vec = (*itr).second;
    for( auto vi = vec.begin(); vi != vec.end(); ++vi){
      std::cout << "   Val: " << *vi << std::endl;
    }
  }

  return 0;
}