Re: Beginners question: Compound types, how-to?

[Georg Bauhaus <rm-host.bauhaus@maps.futureapps.de>]

On 11/3/10 9:44 PM, Yannick Duchêne (Hibou57) wrote:

> About the more : think about an inventory machine in a library, it has a method named Run_Inventory, and inside this, a loop and a book variable. This book has nothing special at all, as it is by definition, to hold any what book you may imagine. This variable, here, is, simply what the Book type, is. So your question is indeed very good : what is different ? The answer : one is a type, the other is an instance So how do you name it ? With a name which expose the difference
> Either Book_Instance and Book or
> else Book and Book_Type or even, if you like it Book_Instance and Book_Type. Book_Instance is the place for different name : A_Book, Any_Book, Current_Book, etc. What ever, you will add to the instance name, something which you reject for the type name (paradox ?).

I'm picking up an argument about "just any book" found somewhere
in the three very long lines above  ;-)

You have just started to answer my question about finding
object names: What is the role of the just-any-book variable
in the loop in Run_Inventory?  What does the loop do to the
just-any-book object?  If there is some information, fine,
the name is very much at hand.  Otherwise, I'd do the same
as Simon Wright and just use the letter B.  As long as there
aren't too many symbols around.  But I'd *not* use Book and
have readers sort out name spaces!