Re: how to import a package

[Georg Bauhaus <bauhaus@arcor.de>]

On Sun, 2006-12-10 at 22:50 -0800, markww wrote:
>  So I made a test function like:
> 
>      procedure Add_Record(GenericData : gNode.T) is
>      Temp : gNode.Node_Ptr;
>      begin
>          Temp := new gNode.Node;
>          Temp.Data := GenericData;
>      end Add_Record;
> 
> now the compiler is saying that my generic type T is not visible to the
> rest of the application. 

The type T is in the formal part of the package, not in the package
proper. So either you are explicit about T (you have made an
instance of the package using Some_Type for T, so you can use
Some_Type instead of gNode.T there, too) or you make your generic
package have a type Gen_T by using "subtype Gen_T is T" or similar.


> Also, is this procedure definition correct? In C++ it's easy to do this
> after defining a type it would be just:
> 
>     bool Add_Record (T t);
>     template<typename T>
>     bool CLinkedList<T>::Add_Record(T t)
>     {
>         // ...
>     }

But here, you have one specific T and one generic T.