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From: moi <findlaybill@blueyonder.co.uk>
Newsgroups: comp.lang.ada
Subject: Re: Map iteration and modification
Date: Wed, 3 Jan 2024 04:05:59 +0000
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On 03/01/2024 03:22, Randy Brukardt wrote:
> "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message
> news:umv8rg$2b4on$1@dont-email.me...
> ...
>> It is same benefit Ada arrays have over C's T* pointers and arithmetic of.
>> Cursor is merely a fat pointer.
> 
> A cursor is an abstract reference. It *might* be implemented with a pointer
> or with an array index. Indeed, the bounded containers pretty much have to
> be implemented with an underlying array.
> 
> It would be nice if there was some terminology for abstract references that
> hadn't been stolen by some programming language. Terms like "pointer" and
> "access" and "reference" all imply an implementation strategy. That's not
> relevant most of the time, and many programming language design mistakes
> follow from that. (Anonymous access types come to mind).

What about "currency", as used in DB systems?

-- 
Bill F.