Ugly ID memories

[Bob Sneidar]

Object ID's are simply a way for the software to uniquely identify an  
object. That the ID is made visible to the programmer seems to me to  
be a convenience. Since you can refer to an object by name anyway,  
there really is no hard fast reason to refer to it by it's ID. It  
would be like deleting a user profile in Windows, then creating  
another and giving it the same ID. Hey, actually that would be cool!  
But I digress.

Bob Sneidar
IT Manager
Logos Management
Calvary Chapel CM

On Dec 9, 2008, at 2:01 PM, DunbarX at aol.com wrote:

>
> In a message dated 12/9/08 3:08:11 PM, mwieder at ahsoftware.net writes:
>
>
>> To add to what Bjornke posted, if I delete a button and then want to
>> recreate it (as in a version control storage and retrieval system),
>> then there is *no way* to reuse its previous id in that stack. The id
>> number is lost to history. The only workaround for this is too ugly  
>> to
>> discuss in mixed company.
>>
> There was a corollary debate in HC years back; whether the id should  
> be a
> settable property. It was decided (very) on high that it would not  
> be. The
> reasons are lost in time, but I recall it was felt that id's were  
> not intended to be
> indexed, and that as permanent and unique as they were, id's also  
> needed to
> die off completely if the object was deleted. A tribute, in fact, to  
> their very
> uniqueness. In no way linkable, by design, to any remaining or future
> objects.
>
> And I would love to talk about a workaround. Perhaps remember the  
> old id,
> linking it via a look-up table to some other object? But as before,  
> nobody could
> think of a good reason to do so, that is, there was no value in  
> knowing that a
> deleted id was either linked to or owned by any other object.  
> Numbers were
> cheap back in those days, and the simple fact that every object had  
> a unique one
> was considered more than sufficient.
>
>
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