Mapping None. Why?

David C. Ullrich dullrich at sprynet.com
Fri Jun 13 19:04:31 CEST 2008


In article 
<d5897630-558e-428a-9bab-e0c9c1de7ba6 at j22g2000hsf.googlegroups.com>,
 Paddy <paddy3118 at googlemail.com> wrote:

> On Jun 13, 12:49 pm, David C. Ullrich <dullr... at sprynet.com> wrote:
> > On Thu, 12 Jun 2008 12:05:02 -0700 (PDT), Paddy
> >
> > <paddy3... at googlemail.com> wrote:
> >
> > >Iam wondering why the peculiar behavior of map when the function in
> > >given as None:
> >
> > If you start with a value x and then apply no function
> > at all to it, what results is x.
> >
> > David C. Ullrich
> 
> True, but None is not a function. It's a sentinel value to turn on the
> functionality.

Uh, thanks. I think I knew that - I was just suggesting why 
the way map works makes sense. 

> - Paddy.

-- 
David C. Ullrich



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