[Zope-Checkins] Re: [Checkins] SVN: Products.Five/trunk/ Now you can use the old registry with the new API for registerig components.
On 27 Jul 2006, at 16:15, Lennart Regebro wrote: Modified: Products.Five/trunk/site/localsite.py === --- Products.Five/trunk/site/localsite.py 2006-07-27 13:51:25 UTC (rev 69270) +++ Products.Five/trunk/site/localsite.py 2006-07-27 14:15:46 UTC (rev 69271) @@ -16,12 +16,26 @@ $Id$ +from operator import xor +def one_of_three(a, b, c): +# Logical table for a three part test where only one can be true: +# 0 0 0: 0 +# 0 0 1: 1 +# 0 1 0: 1 +# 0 1 1: 0 +# 1 0 0: 1 +# 1 0 1: 0 +# 1 1 0: 0 +# 1 1 1: 0 +return xor(xor(a, b), c) and not (a and b and c) Heh, boolean algebra is nice but sometimes integers convey the meaning much better: return int(a)+int(b)+int(c) == 1 Florent -- Florent Guillaume, Nuxeo (Paris, France) Director of RD +33 1 40 33 71 59 http://nuxeo.com [EMAIL PROTECTED] ___ Zope-Checkins maillist - Zope-Checkins@zope.org http://mail.zope.org/mailman/listinfo/zope-checkins
[Zope-Checkins] Re: [Checkins] SVN: Products.Five/trunk/ Now you can use the old registry with the new API for registerig components.
Florent Guillaume wrote: On 27 Jul 2006, at 16:15, Lennart Regebro wrote: Modified: Products.Five/trunk/site/localsite.py === --- Products.Five/trunk/site/localsite.py 2006-07-27 13:51:25 UTC (rev 69270) +++ Products.Five/trunk/site/localsite.py 2006-07-27 14:15:46 UTC (rev 69271) @@ -16,12 +16,26 @@ $Id$ +from operator import xor +def one_of_three(a, b, c): +# Logical table for a three part test where only one can be true: +# 0 0 0: 0 +# 0 0 1: 1 +# 0 1 0: 1 +# 0 1 1: 0 +# 1 0 0: 1 +# 1 0 1: 0 +# 1 1 0: 0 +# 1 1 1: 0 +return xor(xor(a, b), c) and not (a and b and c) Heh, boolean algebra is nice but sometimes integers convey the meaning much better: return int(a)+int(b)+int(c) == 1 Hey, this is fun! How about this: def only_one(*args): return sum(bool(i) for i in args) == 1 -- Benji York Senior Software Engineer Zope Corporation ___ Zope-Checkins maillist - Zope-Checkins@zope.org http://mail.zope.org/mailman/listinfo/zope-checkins
[Zope-Checkins] Re: [Checkins] SVN: Products.Five/trunk/ Now you can use the old registry with the new API for registerig components.
Indeed :) On 29 Jul 2006, at 00:39, Benji York wrote: Florent Guillaume wrote: On 27 Jul 2006, at 16:15, Lennart Regebro wrote: Modified: Products.Five/trunk/site/localsite.py === --- Products.Five/trunk/site/localsite.py 2006-07-27 13:51:25 UTC (rev 69270) +++ Products.Five/trunk/site/localsite.py 2006-07-27 14:15:46 UTC (rev 69271) @@ -16,12 +16,26 @@ $Id$ +from operator import xor +def one_of_three(a, b, c): +# Logical table for a three part test where only one can be true: +# 0 0 0: 0 +# 0 0 1: 1 +# 0 1 0: 1 +# 0 1 1: 0 +# 1 0 0: 1 +# 1 0 1: 0 +# 1 1 0: 0 +# 1 1 1: 0 +return xor(xor(a, b), c) and not (a and b and c) Heh, boolean algebra is nice but sometimes integers convey the meaning much better: return int(a)+int(b)+int(c) == 1 Hey, this is fun! How about this: def only_one(*args): return sum(bool(i) for i in args) == 1 -- Benji York Senior Software Engineer Zope Corporation -- Florent Guillaume, Nuxeo (Paris, France) Director of RD +33 1 40 33 71 59 http://nuxeo.com [EMAIL PROTECTED] ___ Zope-Checkins maillist - Zope-Checkins@zope.org http://mail.zope.org/mailman/listinfo/zope-checkins
