Re: GOOPS question

[Mikael Djurfeldt]

On Fri, Apr 30, 2021 at 1:11 AM Damien Mattei <damien.mattei@gmail.com>
wrote:

> for example in the doc there is:
> (define-class <my-complex> (<number>) r i #:name "Complex")
>
> seems <number> superclass is of no use
>

Well, it certainly *is* of use in the sense that methods operating on
<number> will immediately start to also accept <my-complex> as an argument.
That might seem worrisome but is not if there is some agreement on which
operations should be implemented for all numbers. So, if you had previously
written an algorithm which operates on numbers, there's now a good chance
that it would also work for <my-complex> objects.