Problem with iterators for list<vector<double> >

ROOT
1

Fellow ROOTers,

I’m having some problems using iterators for an STL list of vectors. It seems ROOT cannot create an iterator for list<vector >;

I’m running 5.24/00 on RHEL4.

Here is the code:

[code]#include
#include
#include
#include

using namespace std;

class CTest
{
public:
typedef vector VECTORD_t;

CTest(void) {}
virtual ~CTest(void){}

// works
void DoIt0(void) {
    list<string> ls;
    ls.push_back("This");
    ls.push_back("That");
    ls.push_back("The Other Thing");

    list<string>::iterator it;

    it = ls.begin();
    while (it != ls.end()) {
        cout << (*it) << endl;
        it++;
    }
}

// does not work
void DoIt1(void) {
    VECTORD_t vf0(2); vf0[0] = 1.0; vf0[1] = 2.0;
    VECTORD_t vf1(2); vf1[0] = 3.0; vf1[1] = 3.0;

    list<VECTORD_t> lv;
    lv.push_back(vf0);
    lv.push_back(vf1);

    list<VECTORD_t>::iterator it;

    it = ls.begin();
    while (it != ls.end()) {
        vector<double> vf = (*it);
        for (int i=0; i<vf.size(); i++) {
            cout << vf[i] << endl;
        }

        it++;
    }
}

// does not work
void DoIt2(void) {
    vector<double> vf0(2); vf0[0] = 1.0; vf0[1] = 2.0;
    vector<double> vf1(2); vf1[0] = 3.0; vf1[1] = 3.0;

    list<vector<double> > lv;
    lv.push_back(vf0);
    lv.push_back(vf1);

    list<vector<double> >::iterator it;

    it = ls.begin();
    while (it != ls.end()) {
        vector<double> vf = (*it);
        for (int i=0; i<vf.size(); i++) {
            cout << vf[i] << endl;
        }

        it++;
    }
}

};

#ifdef MAKECINT
#pragma link C++ class std::liststd::string;
#pragma link C++ class std::vector;
#pragma link C++ class std::list<std::vector >;
#pragma link C++ class std::list<std::vector >::iterator;

#pragma linkc C++ typedef CTest::VECTORD_t;
#pragma link C++ class std::listCTest::VECTORD_t;
#pragma link C++ class std::listCTest::VECTORD_t::iterator;
#endif

[/code]

Here is the error message:

[code]root [0] .L verysimpletest.C
.L verysimpletest.C
root [1] CTest* t = new CTest
CTest* t = new CTest
root [2] t->DoIt1()
t->DoIt1()
Error: can not call private or protected function _list.h:300:
_list.h 138 list<vector<double,allocator > >::iterator list<vector<double,allocator > >::iterator::iterator(list<vector<double,allocator > >::link_type);
Calling : list<vector<double,allocator > >::iterator::iterator(long);
Match rank: file line signature
1000000 _list.h 143 list<vector<double,allocator > >::iterator list<vector<double,allocator > >::iterator::iterator(list<vector<double,allocator > >::iterator&);
ffffffff _list.h 140 list<vector<double,allocator > >::iterator list<vector<double,allocator > >::iterator::iterator();

  • 10002 _list.h 138 list<vector<double,allocator > >::iterator list<vector<double,allocator > >::iterator::iterator(list<vector<double,allocator > >::link_type);
    *** Interpreter error recovered ***
    root [3] .q
    [/code]

Any help is appreciated.

Thanks,
Terry[/code]

2

Hi Terry,

Use ACliC:.L verysimpletest.C+ which will point out a couple of placed where you misspelled a the name of the list variable, once you fix that your code will work.

Cheers,
Philippe.

3

Hi Phillipe,

I did use ACLiC as shown in the output I attached previously, but it gives me no indications of typos.

Thanks,
Terry

4

Ah, ha, I forgot the little ‘+’ after the C. I will take a look at the output.

Thanks,
Terry

5

It works now.

Many thanks for the help.

Terry