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Re: reduce metaoperator on an empty list

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From:
BÁRTHÁZI András
Date:
June 1, 2005 06:38
Subject:
Re: reduce metaoperator on an empty list
Message ID:
Pine.LNX.4.61.0506011534090.27310@wish.hu
Hi,

> You have to either supply an initial value or refactor your logic not
> to allow an empty @array (as in the first case).  If you want it some
> other way, there are far too many special cases we have to work with,
> some of which are just mathematically impossible.
>
> I think `fail`ing is the best bet.

I haven't read the whole thread, so I'm sorry, if it was before. I think 
that a fail is a good idea. Or maybe it should be a warning, and the 
return value should be undef.

I mean:

   [<]@empty === undef < undef;
   [*]@empty === undef * undef;
   etc.

Bye,
   Andras
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