"Gavin Kistner" <gavin / refinery.com> schrieb im Newsbeitrag
news:3boZb.87208$uV3.550379 / attbi_s51...
> nobu.nokada / softhome.net wrote:
> >     unless [Zero, One].any? {|klass| choice.kind_of?(klass)}
> >
> > Or shorter
> >
> >     unless [Zero, One].any?(&choice.method(:kind_of?)
>
> Or, as I noted on the RCR:
>
>        unless ([Zero,One] & choice.class.ancestors).length>0

if ([Zero,One] & choice.class.ancestors).empty?

:-))

>
> -- 
> (-, /\ \/ / /\/