On Thu, 16 Aug 2007 21:31:29 +0200, Axel Gallus wrote:

> I built a container (without a template), an iterator as a nested class and
> a "find"-method:
> iterator has a friend relationship with Hash_Map and vice versa.
>
> class Hash_Map
>
> {
>
>
> iterator find ( value_type ) // Line 6
>
> {
>
> search something.....
>
> return iterator( Param );
>
> }
>
> class iterator : public std:iterator <std::bidirectional_iterator_tag,
> value_type, ptrdiff_t, value_type *, value_type &> // Line 16
>
> {
>
> iterator( param_type Param ){ do something } //
> constructor
>
> various operators and so on.....
>
> };
>
> }
>
> I get the following error message from VS2005:
> "Line 6: std::iterator use of class template requires template argument
> list"

Do you think 'std::iterator' is the same as 'HashMap::iterator'?

>
> If i write Line 6 as
> iterator <std::bidirectional_iterator_tag, value_type, ptrdiff_t, value_type
> *, value_type &> find ( value_type )
> everything compiles fine.
>
> Why do i have to repeat the template instantiation if i already have done
> this on line 16 via the inheritance?
> All books i read about the STL don't need the template instatiation on Line
> 6.
> Did i domething wrong?
>

Remove the 'using namespace std' and recompile and read the errors.

--
Obnoxious User