PEP-0218 (Was: RE: Sets in Python)

[Michael Ströder]

Mikael Olofsson wrote:
> 
> On 31-Jan-01 Tim Peters wrote:
>  >  Note Greg Wilson's PEP for adding a set type to Python:
>  >
>  >      http://python.sourceforge.net/peps/pep-0218.html
> 
> This looks promising. I am especially glad to see that the PEP proposes
> the logical operations '|', '&', and '^' to implement union, intersection
> and symmetric difference. However, I'm not sure I like the proposed use
> of '-' for difference.

I second that. '-' could also be associated to be S^-1 (inverse set)
of set S.

Ciao, Michael.