C_CPP/helpers/println.hpp

//
//  println.hpp
//  printline



#ifndef println_hpp
#define println_hpp

/*
 based on: http://stackoverflow.com/questions/16084379/system-out-println-function-syntax-in-c/16085135#16085135
 initial Author: http://stackoverflow.com/users/264338/mkaes
 */

#include <iostream>
#include <iomanip>
#include <sstream>
using namespace std;

/*
template <typename T>
void printer(T t)
{
  std::cout << t << std::endl;
}

template <typename T, typename ...U>
void printer(T t, U ...u)
{
  std::cout << t;
  printer(u...);
}*/

//namespace std {
  //string to_string(const string s);
  //string to_string(const char* s);
  
  /*
  inline string to_string(const string s){
    return s;
  }
  
  inline string to_string(const char* s){
    return string(s);
  }*/

//}



/*
void println(T t)
{
  std::cout << std::to_string(t) << std::endl;
}

template <typename T, typename ...U>
void println(T t, U ...u)
{
  std::cout << std::to_string(t);
  println(u...);
}
*/


//namespace {

// from: https://stackoverflow.com/questions/16605967/set-precision-of-stdto-string-when-converting-floating-point-values
template <typename T>
std::string to_string_with_precision(const T a_value, const int n = 6)
{
  std::ostringstream out;
  out << std::setprecision(n) << std::scientific << a_value;
  return out.str();
}

template <typename T>
std::string as_string(T t){
  using namespace std;
  return to_string_with_precision(t);
  //return to_string(t);
}


template <>
  std::string as_string<const char *>(const char * s){
  return std::string(s);
}

template <>
std::string as_string<std::string>(std::string s){
  return s;
}
//}

template <typename T>
void println(T t)
{
  std::cout << as_string(t) << std::endl;
}

template <typename T, typename ...U>
void println(T t, U ...u)
{
  std::cout << as_string(t);
  println(u...);
}

template <typename T>
void print(T t)
{
  std::cout << as_string(t);
}

template <typename T, typename ...U>
void print(T t, U ...u)
{
  std::cout << as_string(t);
  print(u...);
}



#endif /* println_hpp */