Checking if a string is null

Regan Heath regan at
Wed Jul 25 03:58:12 PDT 2007

Manfred Nowak wrote:
> Regan Heath wrote
>> This all boils down to the empty vs null string debate where some
>> people want to be able to distinguish between them and some see no
>> point. 
> I haven't seen such a debate.

There have been several, I did a brief search and came up with:
(this one was my fault)

Some of those go back a long, long way.

> Does it mean that it is not possible to implement a Kleene Algebra for 
> strings in D because there is no neutral element for the alternative 
> operator?

I have no idea. :)


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