Std::vector< std::vector<> > in root class

ROOT
1

Dear experts,

I have a class which contains, a std::vector of vectors.

I don’t want to store this class in a tree or draw it, or anything, I just want to use this class as a container in my program, which elsewhere requires root libraries.

If I comment out everything in my code which doesn’t use std::vector< std::vector> > the compilation is fine.

Do I need to add something into my LinkDef file to compile my class correctly?

The error occurs when generating the dictionary:
Syntax error prec_stl/memory:56:
…

A test with a simple class:

#include <vector>
class test
{
 public:
      test() {};
      typedef std::vector< std::vector<int> > dvec;
 private:
ClassDef(test,0)
}

Throws the same error.

Thanks,

Rob

2

This has been discussed here:http://root.cern.ch/phpBB2/viewtopic.php?t=7911

3

I tried:

#pragma link C++ class vector< vector >+;
#pragma link C++ class vector< vector >+;
#pragma link C++ class std::vector< std::vector >+;
#pragma link C++ class std::vector+;

… and the same without the plusses…, and with ! instead of the plusses.

None of these worked. All gave me the same error.

I am now going to try never using a dictionary… which should be fine for my classes, but probably not for the future if I ever want to use my classes as a macro on the command line.

So it would still be nice to see the fix for this.

Cheers,

Rob

4

Hi,

Rather than

#pragma link C++ class vector< vector<long unsigned int> >+; try:

Cheers,
Philippe.

PS. If you do not need to store this class and do not intent on using it from the interpreter then it is fine not to generate a dictionary

5

Thanks for your reply.