Reply to How to call a function by a string of name & How to get the name of a class? on Thu, 03 Jul 2008 23:31:37 GMT

cutecutemouse — Thu, 03 Jul 2008 23:31:37 GMT

There are hundred of similar classes and a large file(in processing)
with thousand of instances of these classes. I should export these
instances into a XML file (I use Tiny XML), however not total
instances, but these which belong to the selected classes and the
selected attributes(member variable and value). In advance, I will
have a configuration file (also XML format), to define which classes
and which attributes are selected, that is a user-defined file.
The problem are:

1, How do I get the name of a class? Just like by Java the
method .getclass() or instanceof ?

2, Is it possible to have such as an iterator to traverse through
all the variables/functions, to only call the functions and to get
the values of variables I need by name?

Vielen Dank im Voraus!

Reply to How to call a function by a string of name & How to get the name of a class? on Fri, 04 Jul 2008 00:47:48 GMT

Erhard Henkes — Fri, 04 Jul 2008 00:47:48 GMT

For instance using "typeid" you can do this:

#include 
#include 
#include 
using namespace std;

struct X
{
    public:
        int a;
};

class Y
{
};

int main()
{
    int    a;
    float  b;
    double c;
    string d;
    X      e;
    Y      f;

    cout <<  typeid(a).name() << endl;
    cout <<  typeid(b).name() << endl;
    cout <<  typeid(c).name() << endl;
    cout <<  typeid(d).name() << endl;
    cout <<  typeid(e).name() << endl;
    cout <<  typeid(f).name() << endl;
    cout <<  typeid(e.a).name() << endl;
    getch();
}

i
f
d
Ss
1X
1Y
i