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Subject: Re: Overring function and its returned type
From: Maciej Sobczak <see.my.homepage@gmail.com>
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Date: 2012-11-16T02:40:46-08:00
List-Id: <comp.lang.ada>

W dniu czwartek, 15 listopada 2012 16:13:06 UTC+1 u=C5=BCytkownik Peter C. =
Chapin napisa=C5=82:

> I talked with some people in the Scala community and it turns out the=20
> reason for the restriction is related to overload resolution and=20
> ambiguity.

Which have a very simple solution: report the problem when (and *only* when=
) there is a problem.

> To illustrate let me start with a simple derivation class:

> In that=20
> case which F is being overridden here?

In the case of ambiguity, let the compiler inform you about that.

The problem is that this single example is very artificial and represents s=
ome corner case that might actually never materialize in any of our project=
s. There are many more examples that are practical and do not hit any corne=
r cases of overload resolution and that could be easily handled - and there=
fore could become an added value in the type system.

--=20
Maciej Sobczak * http://www.msobczak.com * http://www.inspirel.com