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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Newsgroups: comp.lang.ada
Subject: Re: Easy question about Character manipulation
Date: Tue, 30 Jan 2007 15:18:34 -0500
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"(see below)" <yaldnif.w@blueyonder.co.uk> writes:

> On 30/1/07 01:43, in article 1170121405.6329.89.camel@localhost, "Georg
> Bauhaus" <bauhaus@arcor.de> wrote:
>
>>> On the contrary, this *exactly* like (ISO Standard) Pascal.
>> 
>> I don't think so, if a Pascal compiler is supposed
>> to determine "the same type" (exact same type) by looking
>> at the definition, not the name. Otherwise two compilers
>> claiming to support ISO Pascal are broken:
>
> Trust me, I was one of the team that wrote the standard. 8-)

OK.  ;-)

>    T = 1 .. 3;
>    S = 1 .. 3;

> This is not a matter of type equivalence,
> it is a matter of automatic type conversion on assignment
> (assignment compatibility), and that IS unlike Ada, of course.

What about parameter passing?  I was under the impression that one can
pass something of type T to a parameter of type S, or a parameter of
type Integer, or vice versa, in Pascal.  Please correct me if I'm
wrong.

If I'm right on that point, then I claim that we're just arguing over
terminology: saying "so-and-so are different types, but there are all
kinds of implicit conversions" amounts to roughly the same thing as
"so-and-so are the same type".

The point is, if you say this in Ada:

    type T1 is range 1..10;
    type T2 is range 1..10;
    X : T1;
    Y : T2;

is there any equivalent in Pascal that causes "X := Y" to be illegal
(or similarly for parameter passing)?

- Bob