PEP308: Yet another syntax proposal
aahz at pythoncraft.com
Tue Feb 11 02:57:06 CET 2003
In article <mailman.1044918694.5993.python-list at python.org>,
James J. Besemer <jb at cascade-sys.com> wrote:
>> That's the *only* reason to consider conditional
>> expressions rather than a new builtin conditional function.
>Not true, as I and others have explained at length elsewhere. Readability
>and maintainability are SERVED by factoring out common sub-expressions from
>the more verbose forms:
> if condition1:
> if condition2
> targetVar1 = result1
> targetVarl = result2 # hidden BUG!!
> targetVar1 = result3
How is what you're saying here an argument against a conditional
targetVar1 = iif(cond1, iif(cond2, result1, result2), result3)
Seems to me that short-circuit is the *only* reason to dislike iif();
and therefore you need to make your argument on changing the language
(rather than the library) solely on the short-circuit point. That's a
lot tougher, I think.
Aahz (aahz at pythoncraft.com) <*> http://www.pythoncraft.com/
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