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From: Brian Drummond <brian@shapes.demon.co.uk>
Newsgroups: comp.lang.ada
Subject: Re: If not Ada, what else...
Date: Sat, 11 Jul 2015 10:46:46 +0000 (UTC)
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Xref: news.eternal-september.org comp.lang.ada:26767
Date: 2015-07-11T10:46:46+00:00
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On Fri, 10 Jul 2015 12:43:55 -0700, Patrick Noffke wrote:

> On Friday, July 10, 2015 at 2:10:44 PM UTC-5, David Botton wrote:
>> > I may be missing something here, but I don't see where Ada's type
>> > system is that much better than C++'s,
>> 
>> So in C++ you can create new incompatible types with various ranges,
>> use them for array indexes, true enums?
>> 
>> 
> In C++11 you have enum class which makes an enum its own type.  You can
> still cast it to the class type, but you can't willy-nilly use it as an
> int as with the old-style enum.
> 
> This generates an error:
> 
>     enum class Junk : int {
>         One, Two, Three
>     };
> 
>     int a = Junk::One; // error:  cannot convert to int
> 
> Where this is allowed:
> 
>     int a = (int) Junk::One;

And you can loop over the enum range (without explicitly naming its first 
and last tokens), and index arrays with them, etc, right?

-- Brian