[Python-Dev] [Python-checkins] peps: PEP 426: replace implied 'version starts with' with new ~= operator

[Nick Coghlan]

On Sat, Feb 23, 2013 at 2:24 PM, Ezio Melotti <ezio.melotti at gmail.com> wrote:
> Hi,
>
> On Sat, Feb 23, 2013 at 5:33 AM, daniel.holth
> <python-checkins at python.org> wrote:
>> http://hg.python.org/peps/rev/de69fe61f300
>> changeset:   4764:de69fe61f300
>> user:        Daniel Holth <dholth at fastmail.fm>
>> date:        Fri Feb 22 22:33:09 2013 -0500
>> summary:
>>   PEP 426: replace implied 'version starts with' with new ~= operator
>>
>
> I haven't seen any discussion about this, but FWIW CSS [0] and JQuery
> [1] use ^= for this purpose.
> ^ also indicates the beginning of the string in regular expressions
> (this is why ^= was chosen for CSS/JQuery).
> They also use ~= to indicate "attribute contains word" [0][2].
> Perl also has a similar-looking operator [3] (=~) used to test a regex match.

Daniel is a fan of this syntax, but I think it is inferior to the
implied approach, so don't expect it to survive to any accepted
version of the PEP :)

Cheers,
Nick.

-- 
Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia