Re: Generic functions: Specializers like `or' or `memq'?

[Philip Kaludercic]

Michael Heerdegen <michael_heerdegen@web.de> writes:

> Hello,
>
> I come back to this question again and again, so it's time to just ask:
>
> Often I want to use a certain method implementation for several very
> similar cases and want to avoid code duplication, but I don't know how
> to express this using the existing method specializers.
>
> For example, I want the `head' spec to match one of several symbols who
> are synonymous.  Or instead of (eql SYM) I would rather want
> (memq (SYMS...)).  Or I want to combine several SPECS using `or' because
> the implementation is the same.
>
> Am I'm missing something or - this is not possible currently, right?
> Would it be possible to implement such stuff then?

I haven't tried it myself, but it seems like you would have to use
cl-generic-generalizers (see cl-generic.el) to do so.

-- 
        Philip Kaludercic