From: lanceedmonds@SPAMLESS.xtra.co.nz (Lance Edmonds)
Subject: Re: Dim absolute:
 
d83@ath.forthnet.gr (Don Schullian) wrote:
 
>You're thinking too hard...
>
>  If you just need some memory area and you don't care where it is except 
that
>it doesn't utilize memory already in use then just DIM an array. You don't
>want to use ABSOLUTE.
 
Actually, DIM ABSOLUTE can be very useful for creating a psuedo UNION
between two arrays. For example, I use it to create a string array
MyArray(0) as string * 32750)
then "map" an integer array over the top of it of 16325 members using
DIM ABSOLUTE MyIntArray(0:16324) at varseg(MyArray(0))
(off the top of my head, YMMV).
 
 This way I can use integers in say, an index table, but still save
the array using a PUT$ #1, MyArray(0) rather than using BSAVE. Makes
loading index tables much faster.
 
This idea can be extended to all sorts of places. Very useful.
 
Regards,
Lance.
 
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