(C++) std::istringstream

 

std::istringstream is an STL input stream data type.

 

 

 

 

 

Example: IsDouble

 

The example below shows how to check if a std::string can be converted to double: put the std::string in an std::istringstream and try to write it to a double. If this fails, the std::string cannot be converted to double.

 

---

#include <cassert> #include <sstream> //From http://www.richelbilderbeek.nl/CppIsDouble.htm bool IsDouble(const std::string& s) {   std::istringstream i(s);   double temp;   return ( (i >> temp) ? true : false ); }