ATL / WTL / STL

void resize(
   size_type _Newsize
);

void resize(
   size_type _Newsize,
   Type _Val
);

• If an object is referenced from multiple places, making sure you recreate that object once when reading in a serialized object graph
• If you have a collection (e.g. array or vector) of pointers to some base class, but the objects pointed at are of derived classes, you need to make sure that the derived class serialization functions are called
• You need some way of identifying the type of objects you've serialized
• Constructors - you really need a default (no parameter) constructor for all serializable classes, even if you don't really want one

#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>

int main(int, char**)
{
  {
    std::ofstream a("a.a");
    std::string s = " Hello World";
    a << s << std::endl;
  }  
  {
    // This prints 'Hello', illustrating that the string extractor ( >> )
    // stops reading when it sees a whitespace and (by default) skips 
    // over leading whitespace
    std::ifstream a("a.a");
    std::string s;
    a >> s;
    std::cout << s << std::endl;
  }
  {
    // This prints '', showing how you can persuade the stream to take
    // notice of leading whitespace
    std::ifstream a("a.a");
    std::string s;
    a >> s;
    std::cout << s << std::endl;
  }
  {
    // This prints 'Hello World' - getline reads the whole line and
    // assigns it to s
    std::ifstream a("a.a");
    std::string s;
    getline(a, s);
    std::cout << s << std::endl;
  }  
}

followait wrote:

Do you know to do std::string serialization?

Stuart Dootson wrote:

What do you mean by serialization?

followait wrote:

save/load the object