- Problem with pointer semantics

From: [at]} <Wojtek>
Date: Tue, 20 Jun 2006 12:38:51 -0400 (EDT)

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On Tue, 20 Jun 2006, [KOI8-R] óÅÒÇÅÊ çÕÂÁÎÏ× wrote:

> What about this?
>
> TYPE Array = ARRAY 2 OF INTEGER;
> VAR a, b: POINTER TO Array;
>
> b^ := a^; (* value copy *)
> b := a; (* pointer copy *)

The problem becomes even more involved when the array elements
contain pointers to data structures, which in turn contain
pointers, and so on. We are entering a discussion of "shallow copy"
versus a "deep copy". The depth of the deep copy can also vary.
The deep copy can proceed to the deepest level, or it can
go a few steps deep, and then stop and some intermediate level.
Nothing is written in stone in such cases. It all depends on the
situation.

Would anybody seriously consider automating any of this?
In case the POINTER TO ARRAY OF RECORD is not automated, then
why POINTER TO ARRAY OF INTEGER should be automated? The latter
is the least of a problem if you consider possible problems
with nested structures.

Could someone please explain what is "Hungarian notation"?
I looked a few posts back and I only see arguments pro and con,
but not what it is. A definition please, and a short example?

Thanks, -- W.

--- BlackBox
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Received on Tue Jun 20 2006 - 18:38:51 UTC