[Python-ideas] [Python-ideos] Dedicated overloadable boolean operators

[Brendan Barnwell]

On 2015-11-27 09:28, Andrew Barnert via Python-ideas wrote:
> And finally, NumPy is one of the uses that doesn't require short
> circuiting, and the same is almost certainly true for other
> elementwise uses, and yet we seem to all be agreed that the new
> overload has to be short-circuitable.

	Do we?  I don't.  I agree that if we add a way to overload the existing 
and/or to support these new usages, then that has to be 
short-circuitable. because and/or currently are short-circuitable and we 
can't get rid of that.  But to me one of the attractive aspects of this 
new proposal is that the new operators need not be short-circuitable, 
which would avoid the various contortions required in a scheme like PEP 
335 and thus greatly simplify the overloading.  In other words the whole 
point of these new operators would be to do and-like and/or or-like 
operations that definitely do want both of their arguments all the time 
(such as elementwise operations or combining abstract query objects like 
in these SQL cases).

-- 
Brendan Barnwell
"Do not follow where the path may lead.  Go, instead, where there is no
path, and leave a trail."
    --author unknown