Re: Why Single Inheritance Restriction?

[Michael Sperber <sperber@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

Richard Kelsey <kelsey@xxxxxxx> writes:

>    From: Michael Sperber <sperber@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
>    Cc: srfi-76@xxxxxxxxxxxxxxxxx
>
>    Richard Kelsey <kelsey@xxxxxxx> writes:
>
>    > In some particular order? 
>
>    No---at least the current draft doesn't specify one, keeping with
>    Scheme's tradition here.
>
> Actually, it does give an order.  "Parent init expressions, if any,
> are evaluated before child init expressions."

Yes, but there's no order specified within, I think.

> It depends on whether or not the 'init' expressions count
> as initializing the records.

Yes.  And every field has a defined <init expression>, whether
implicit or explicit.

> By the way, in what context are the <constructor argument>s in
>
>   (parent <parent name> <constructor argument> *)
>
> evaluated?  Specifically, do they have any access to the values
> passed to the subtype constructor?

Not directly, no.  The context is that of the <formals> list.  I guess
this should be clarified.

-- 
Cheers =8-} Mike
Friede, Völkerverständigung und überhaupt blabla