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From: Gautier write-only <gautier_niouzes@hotmail.com>
Newsgroups: comp.lang.ada
Subject: Re: what are some of the uses for ada?
Date: Tue, 8 Jun 2010 18:06:44 -0700 (PDT)
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Date: 2010-06-08T18:06:44-07:00
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Robin:
> Wondering, what are some of the uses for ada,
Here are some: http://www.seas.gwu.edu/~mfeldman/ada-project-summary.html

> what is it for,
Anything - from very serious things, to things not serious at all!

> why is it better than other languages.....this is.
Is it ? Perhaps. For me it is the sum of many details which in total
make a big difference.
Generally, it is made to catch your errors the earliest possible. You
also notice potential errors more often. It begins with the fact that
you have:
      ...
      end if;
    end loop;
  end if;
  ...
and not brackets. You even don't write some classic "banana skins" in
the first place: steps in the "for" instruction are only 1 or -1. Ada
offers plenty of attributes which make life easier as well: you'll
write "for i in x'Range loop" rather than having to pass a 'n' integer
and putting the wrong upper bound on your loop. And so on...

Then, features are fairly orthogonal.
- you are not forced to use references and pointers if you don't need
them. If you want, you can make a full object-oriented GUI without any
dynamic allocation on GUI objects.
- the type system is not bound to the modularity (package /= class)
- you can make "a:= b" whatever the complexity of a (and b's) type
- you write "if a = b then..." to compare two integers, or two
matrices, or anything else as well: for instance, the whole contents
of a dialog box before and after user changes, to check if there is
any.
- you have expressions for every type

Then, the nesting is very powerful in Ada. It's definitely not a
"flat" language.
You can have a package inside a function you need it. Define a local
procedure inside a loop. And so on.
_________________________________________________________
Gautier's Ada programming -- http://sf.net/users/gdemont/
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