Re: grassroots thoughts on access types

["Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>]

On 02/10/2018 10:16 PM, Robert A Duff wrote:
> 
> Vectors allow syntactic sugar like "A(X) := A(X) + 1;",
> and this syntactic sugar relies on access discriminants,
> which are of anonymous access types.  Do you avoid using
> that syntactic sugar?

I don't use Ada 12 because it's only supported by one compiler, so I don't use 
these forms. But that doesn't answer your question, either.

There are no anonymous access types in your examples of using these forms 
because using them doesn't require writing any. So if I used Ada 12 I wouldn't 
have any real problem with using such forms for constructs that already provide 
them. However, since I won't write any anonymous access types, I would not 
provide the ability to use such forms with anything I wrote. As it might be 
confusing to use these forms with some constructs and not with others, my code 
would probably be easier to read if I eschewed such forms.

-- 
Jeff Carter
"When Bell Labs were invited to evaluate C against the DoD requirements
[for Ada], they said that there was no chance of C meeting the
requirements of readability, safety, etc. for which we were striving,
and that it should not even be on the list of evaluated languages."
William Whitaker
116