template iterators

[springer]

Hi,

I have a template matrix class that wraps a std::vector. However, the
compiler is complaining about this:

typedef std::vector<T>::iterator iter;
typedef std::vector<T>::const_iterator citer;

iter begin(){ return mMatrix.begin(); }
iter end() { return mMatrix.end(); }

citer begin() const { return mMatrix.begin(); }
citer end() const { return mMatrix.end(); }

Any ideas? It compiles on VC++ 2002, but not on VC++ 2003.

[Victor Bazarov]

springer wrote:

I have a template matrix class that wraps a std::vector. However, the
compiler is complaining about this:

typedef std::vector<T>::iterator iter;
typedef std::vector<T>::const_iterator citer;

iter begin(){ return mMatrix.begin(); }
iter end() { return mMatrix.end(); }

citer begin() const { return mMatrix.begin(); }
citer end() const { return mMatrix.end(); }

Any ideas? It compiles on VC++ 2002, but not on VC++ 2003.

Throw away VC++ 2002. Keep using 2003. Add the 'typename' right
after 'typedef'. Example:

typedef typename std::vector<T>::iterator iter;

V

[mlimber]

springer wrote:

Hi,

I have a template matrix class that wraps a std::vector. However, the
compiler is complaining about this:

typedef std::vector<T>::iterator iter;
typedef std::vector<T>::const_iterator citer;

iter begin(){ return mMatrix.begin(); }
iter end() { return mMatrix.end(); }

citer begin() const { return mMatrix.begin(); }
citer end() const { return mMatrix.end(); }

Any ideas? It compiles on VC++ 2002, but not on VC++ 2003.

It's unclear. Post more of the code, and show us the error messages.

Is your matrix 2-D? That is, does mMatrix.begin() actually return
std::vector< vector<T> >::iterator? (Doubtful, but just in case.)

Cheers! --M