Get item from set

Aahz aahz at pythoncraft.com
Wed Apr 29 18:53:18 CEST 2009


In article <gt9t62$g6f$00$1 at news.t-online.com>,
Peter Otten  <__peter__ at web.de> wrote:
>Aahz wrote:
>> In article <gt8v37$kib$03$2 at news.t-online.com>,
>> Peter Otten  <__peter__ at web.de> wrote:
>>>Aahz wrote:
>>>> In article <gt1kb7$jqg$03$1 at news.t-online.com>,
>>>> Peter Otten  <__peter__ at web.de> wrote:
>>>>>
>>>>>Here's a trick to find the actual element. I think Raymond Hettinger
>>>>>posted an implementation of this idea recently, but I can't find it at
>>>>>the moment.
>>>> 
>>>> Your code is inverted from Raymond's:
>>>
>>>I can't see the inversion.
>> 
>> You were wrapping the objects inserted into the set; Raymond's trick
>> involved only wrapping the comparison object.  It's therefore much more
>> convenient.
>
>I think you are misreading my code. I took the items (of class X) as they 
>were specified by the OP.
>
>The reason I changed their __eq__() method is not that I did not understand 
>Raymond's trick, but rather a quirk in the set's item lookup:

Gotcha -- thanks for the explanation!
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

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