[Python-Dev] Re: PEP239 (Rational Numbers) Reference Implemen tation and new issues

[Delaney, Timothy]

> From: Tim Peters [mailto:tim.one@comcast.net]
> 
> [Delaney, Timothy]
> > ...
> > Actually, following through my thought processes, ``x:y`` is only
> > legal in the context of a sequence slice i.e. inside ``[]``.
> 
> Dicts are worse.  {1:2:3} would be hopelessly ambiguous.

{(1:2):3}
{1:(2:3)}

I'm trying to work out a way to get more parentheses in there without
surrounding the actual digits ;)

But it's another overloading that I missed ...

As I said, it's really tempting. The concept is very elegant. Unfortunately,
I don't think it's practical :( Too many cases where it would be necessary
to disambiguate - even having one exception is probably too many.

Do we have double-colons yet?

a::b (damn - I've forgotten what that means mathematically ... equivalent?)
Looks too much like C++ anyway ;)

Tim Delaney