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Serge
Guest
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 Posted: Sun Dec 19, 2004 1:52 am Post subject: unresolved external symbol linker error with a vector which |
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Hi,
I have no problem creating a static member variable with integers, etc but
when I try the same with a vector then I always get linker errors that the
static member variable is unknown (unresolved external symbol)
Below is what an example of the code I use. Can somebody tell me what I am
doing wrong ?
Thanks very much in advance,
Serge
//myclass.h
//header file
#include <vector>
using namespace std;
class myclass
{
public:
static void my_method (int new_value);
private:
static vector<int> m_variable_v; //static member variable
};
//myclass.cpp
//cource code class
#include "myclass.h"
using namespace std;
//define static member variables
vector<int> m_variable_v;
void myclass::my_method(int new_value)
{
m_variable_v.push_back(new_value);
}
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Ivan Vecerina
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| Posted: Sun Dec 19, 2004 9:51 am Post subject: Re: unresolved external symbol linker error with a vector wh |
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"Serge" <serge (AT) NOSPAM (DOT) com> wrote
| Quote: | I have no problem creating a static member variable with integers, etc but
when I try the same with a vector then I always get linker errors that the
static member variable is unknown (unresolved external symbol)
Below is what an example of the code I use. Can somebody tell me what I am
doing wrong ?
....
class myclass
{
public:
static void my_method (int new_value);
private:
static vector<int> m_variable_v; //static member variable
};
....
//define static member variables
vector<int> m_variable_v;
|
Should be:
vector<int> myclass::m_variable_v;
Written as above, you were defining a new variable in namespace scope.
hth -Ivan
--
http://ivan.vecerina.com/contact/?subject=NG_POST <- email contact form
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Branimir Maksimovic
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| Posted: Sun Dec 19, 2004 9:55 am Post subject: Re: unresolved external symbol linker error with a vector wh |
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Serge wrote:
| Quote: | Hi,
I have no problem creating a static member variable with integers,
etc but
when I try the same with a vector then I always get linker errors
that the
static member variable is unknown (unresolved external symbol)
Below is what an example of the code I use. Can somebody tell me what
I am
doing wrong ?
class myclass
{
public:
static void my_method (int new_value);
private:
static vector<int> m_variable_v; //static member variable
};
//myclass.cpp
//cource code class
#include "myclass.h"
using namespace std;
//define static member variables
vector<int> m_variable_v;
|
Classic error. You didn't define class member vector rather
global vector.
Use this syntax:
vector<int> myclass::m_variable_v;
Greetings, Bane.
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Torsten Robitzki
Guest
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| Posted: Mon Dec 20, 2004 12:42 am Post subject: Re: unresolved external symbol linker error with a vector wh |
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Serge wrote:
| Quote: | Hi,
I have no problem creating a static member variable with integers, etc but
when I try the same with a vector then I always get linker errors that the
static member variable is unknown (unresolved external symbol)
Below is what an example of the code I use. Can somebody tell me what I am
doing wrong ?
Thanks very much in advance,
Serge
//myclass.h
//header file
#include <vector
using namespace std;
class myclass
{
public:
static void my_method (int new_value);
private:
static vector
};
//myclass.cpp
//cource code class
#include "myclass.h"
using namespace std;
//define static member variables
vector<int> m_variable_v;
|
this is just an other variable with the name m_variable_v. The name of
the static class variable is myclass::m_variable_v.
regards Torsten
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M Jared Finder
Guest
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| Posted: Mon Dec 20, 2004 12:42 am Post subject: Re: unresolved external symbol linker error with a vector wh |
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Serge wrote:
| Quote: | Hi,
I have no problem creating a static member variable with integers, etc but
when I try the same with a vector then I always get linker errors that the
static member variable is unknown (unresolved external symbol)
Below is what an example of the code I use. Can somebody tell me what I am
doing wrong ?
Thanks very much in advance,
Serge
//myclass.h
//header file
#include <vector
using namespace std;
class myclass
{
public:
static void my_method (int new_value);
private:
static vector
};
//myclass.cpp
//cource code class
#include "myclass.h"
using namespace std;
//define static member variables
vector<int> m_variable_v;
|
vector<int> myclass::m_variable_v; // specify the class or this is
// just a normal global
| Quote: |
void myclass::my_method(int new_value)
{
m_variable_v.push_back(new_value);
}
|
-- MJF
[ See http://www.gotw.ca/resources/clcm.htm for info about ]
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