String stream version of string transformers

StringTransformersSStream.cpp

#include <iostream>
#include <functional>
#include <string>


template<class T>
T getFromString(const std::string& value, std::function<T(const std::string&)> f)
{
    return f(value);
}

/*
auto getIntFromString   = std::bind(getFromString<int>,   std::placeholders::_1, [](const std::string& s)->int  {std::stoi(s);});
auto getFloatFromString = std::bind(getFromString<float>, std::placeholders::_1, [](const std::string& s)->float{std::stof(s);});
*/


auto getIntFromString   = std::bind(getFromString<int>,   std::placeholders::_1, 
  [](const std::string& s)->int  
{
  std::stringstream ss(data);
  int val;
  ss >> val;
  return val;
});

auto getFloatFromString = std::bind(getFromString<float>, std::placeholders::_1, 
  [](const std::string& s)->float
  {
    std::stringstream ss(data);
    float val;
    ss >> val;
    return val;
  });

int main() {
    std::cout << getIntFromString("12") << std::endl;
    std::cout << getFloatFromString("12.4556") << std::endl;
    return 0;
}