please ignore my previous message. i think that my mind was trapped in an
alternate dimension :)
peter
Peter Buckingham wrote:
>
> James Mastros wrote:
> >
> [..]
> >
> > f("+123,456")=123456
> > f(f("+123,456))=123456
> >
> > The functon is not idempotent. Even if you checked f(x)==x (function is the
> > identity), an input of "123456" would work.
>
> just a comment on this, we are talking about sorting which would generally
> mean that the function would have to output a number, which would make the
> behaviour of the functions much more maths-like. the above function would
> probably not be used in a sort routine i think :)
>
> I agree with john's later message that the real issue is the optimiser which
> means that having to run the function is not really an option. so this thread
> is kind of irrelevant :) (sorry)
>
> peter
