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Newsgroups: comp.lang.ada
Date: Sat, 23 Mar 2019 14:19:30 -0700 (PDT)
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Subject: Re: Intervention needed?
From: Jere <jhb.chat@gmail.com>
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Xref: reader01.eternal-september.org comp.lang.ada:55941
Date: 2019-03-23T14:19:30-07:00
List-Id: <comp.lang.ada>

On Saturday, March 23, 2019 at 9:59:38 AM UTC-4, Jere wrote:
> On Saturday, March 23, 2019 at 3:53:34 AM UTC-4, Randy Brukardt wrote:
> > "Jere" wrote in message 
> > ...
> > > Not really.  In Rust they don't even use cursors.  They go straight to
> > > iterators.  On top of that, the combination of being able to specify the
> > > lifetime of all of your variables (if you need to) and the ownership rules
> > > gives them 100% safety from dangling references when they create and use
> > > those iterators.
> > 
> > If you don't store any cursors and just use iterators in Ada, you have the 
> > same level of safety: the tampering checks prevent any problems with 
> > iterators. (Well, unless you turn them off, of course, but if you remove the 
> > seatbelts, you can't much complain that they didn't protect you.)
> > 
> > I'd be interested to find out how Rust deals with the need to designate 
> > individual elements of a container (which is the primary reason that Ada 
> > exposes cursors).
> > 
> >                        Randy.
> 
> Keep in mind the rust paradigm is very different than Ada's.  

Randy (and others), I realized I have said a lot about Rust in this
discussion.  I don't want overshadow the fact that I think Ada
is the superior language.  I've just done some programming in Rust, 
so I felt I could give some insight on the different aspects. I 
apologize if I am saying too much on the topic.  I do feel there 
are things that Ada can learn from Rust, but that doesn't mean
I think Rust is overall better.