Pointer problem

[PaperPilot]

Trying to load a vector, I got the following messages:

[PaperPilot]

d:/mingw/bin/../lib/gcc/mingw32/3.4.5/../../../../include/c++/3.4.5/bits/stl_algobase.h:247: error: no match for 'operator*' in '*__result'

[PaperPilot]

d:/mingw/bin/../lib/gcc/mingw32/3.4.5/../../../../include/c++/3.4.5/bits/stl_algobase.h:249: error: no match for 'operator++' in '++__result'

[PaperPilot]

Here is the WindDataReceiveBuffer header:

[PaperPilot]

#ifndef WINDDATARECEIVEBUFFER_H_
#define WINDDATARECEIVEBUFFER_H_
 
#include "windsTableElement.h"
#include <vector>
typedef std::vector< WindsTableElement > WindTable;
WindTable wt_;
 
class WindDataReceiveBuffer
{
 
    static WindDataReceiveBuffer* instance_;
 
protected:
    WindDataReceiveBuffer();
    ~WindDataReceiveBuffer();
    WindDataReceiveBuffer(const WindDataReceiveBuffer&);
    WindDataReceiveBuffer& operator=(const WindDataReceiveBuffer&);
 
public:
    static WindDataReceiveBuffer* Instance();
    void setData(char*, unsigned int);
    WindTable getWindTable();      
 
};
 
#endif /*WINDDATARECEIVEBUFFER_H_*/
 

[PaperPilot]

And the implementation code:

#include <iostream>
#include "WindDataReceiveBuffer.h"
 
WindDataReceiveBuffer* WindDataReceiveBuffer::instance_ = 0;
 
WindDataReceiveBuffer* WindDataReceiveBuffer::Instance()
{
    if (instance_ == 0)
    {
        instance_ = new WindDataReceiveBuffer;
    }
    return instance_;
}
 

[PaperPilot]

WindDataReceiveBuffer::WindDataReceiveBuffer()
{
 
}
 
WindDataReceiveBuffer::~WindDataReceiveBuffer()
{ 
}
 
void WindDataReceiveBuffer::setData(char* inBufr, 
    unsigned int size)
{      
    std::copy(inBufr, inBufr+(size * sizeof(WindsTableElement)), wt_);
}
 
WindTable WindDataReceiveBuffer::getWindTable()
{
    return wt_;
}
 

[Ganon11]

And the implementation code:

#include <iostream>
#include "WindDataReceiveBuffer.h"
 
WindDataReceiveBuffer* WindDataReceiveBuffer::instance_ = 0;
 
WindDataReceiveBuffer* WindDataReceiveBuffer::Instance()
{
    if (instance_ == 0)
    {
        instance_ = new WindDataReceiveBuffer;
    }
    return instance_;
}
 

When you define instance_ for the first time (your first line of code here), don't include the WindDataReceiveBuffer* before the WindDataRetrieveBuffer::instance_ declaration. Including this makes it seem like a function which would be returning a variable of type WindDataReceiveBuffer*, which works for your Instance() function, but not a static variable declaration.

[PaperPilot]

It seems I need to overload the operators ++ and * for the pointer __result.

Can you help?
(Sorry for using so many posts, but it is the only way I could get all the code in.
Refer to the "Incrementing a pointer" thread for the windsTableElement class code.)

[tavianator]

the third argument to std::copy must be an output iterator, not an object. So, you can use a pointer, or an actual iterator class, etc. Refer to the std::copy documentation for more info.

[PaperPilot]

When you define instance_ for the first time (your first line of code here), don't include the WindDataReceiveBuffer* before the WindDataRetrieveBuffer::instance_ declaration. Including this makes it seem like a function which would be returning a variable of type WindDataReceiveBuffer*, which works for your Instance() function, but not a static variable declaration.

The static member variable instance_ contains a pointer to an instantiation of WindDataReceiveBuffer, making sure using routines can only construct one of them.