On Wednesday, May 13, 2015 at 1:19:31 AM UTC-7, 黄祥 wrote:
>
> *work*
> editable = auth.has_membership('Manager') and (lambda row : 
> row.is_authorized == False)
>
> *not work (no error occured, the result is not expected)*
> editable = (lambda row : row.is_authorized == False) and 
> auth.has_membership('Manager')
>
> why the first is work yet the second result is not expected?
>
>
Is that a matter of short-circuit evaluation?  In the first example, if the 
user isn't in group "Manager" , the lambda might not even be run.  In the 
second example, the lambda is always run.  I'm not sure if that's the 
issue, but I'd consider it a possibility.

/dps

-- 
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
--- 
You received this message because you are subscribed to the Google Groups 
"web2py-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to [email protected].
For more options, visit https://groups.google.com/d/optout.

Reply via email to