assignment in control structure syntax (was Re: Curious assignment behaviour)

[Chris Dutton]

in article 7xlmiivbnj.fsf at ruckus.brouhaha.com, Paul Rubin at
phr-n2001d at nightsong.com wrote on 10/11/01 4:11 AM:

> Chris Dutton <chris at cmb-enterprises.com> writes:
>> The example I saw somewhere that I liked was
>> 
>> if something as x:
>> do_something_to(x)
> 
> That's ok too, as long as the comparison doesn't have to be with zero:
> if (something as x) == 3:
>    do_something_to(x)

Just occurred to me, this kind of aliasing could be helpful elsewhere.  Say
in list comprehensions perhaps?