Re: Deleting last item of a List
Re: Deleting last item of a List
- Subject: Re: Deleting last item of a List
- From: Paul Berkowitz <email@hidden>
- Date: Sat, 20 Nov 2004 06:56:52 -0800
On 11/20/04 5:47 AM, "Nigel Garvey" <email@hidden>
wrote:
> The "insertion point" idea is helpful though. Items can be inserted at
> two points in a list: the beginning and the end. Strings don't have any
> insertion points, so referring to one of them would cause an error. ;-)
>
> Presumably, with a list, it's quicker to locate the element at or next to
> the 'end' insertion point than it is to identify the last of the list's
> "items".
As I recall, insertion, and the speed of it, is connected to the description
we've been given a few times of vectors vs. linked lists. As best I recall -
and I may be getting something wrong here - the original lists in
AppleScript 1.0 were linked lists. These are the ones you can still get
using [square brackets]. By AS 1.1 or so the default list type was changed
to vectors. I could try to describe what I hazily recall about the
difference between them, but I'm sure I'd get something wrong. Perhaps
someone who kept records of those discussions could remind us.
--
Paul Berkowitz
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