Re: Data Structure redefinition

["Sims, Ken" <KSIMS@xxxxxxxxxxxxxxxx>]

Hi Peter -

>In my example, the only thing that has to match is the total lengths of the
>data structures. The pointer makes the 2nd data structure point to the same
>area as the 1st. To make it a little clearer, how about:

The two data structures do not have to be exactly the same length.  The
second data structure can be *shorter* than the first data structure without
any problem.

OTOH, making the second data structure *longer* than the first data
structure is a problem, just like having a parameter on a *entry plist that
is longer than the data being passed; if you access beyond the length of the
original data, who knows what is there.  And if you change it, you can hose
your program in all sorts of interesting ways that can be extremely hard to
track down.

Fortunately with the data structures this is less likely to happen because
it's all in one program.

Ken
Southern Wine and Spirits of Nevada, Inc.
Opinions expressed are my own and do not necessarily represent the views of
my employer or anyone in their right mind.

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