do ... while loop
Joel Davis
joeld at anisci.com
Thu Oct 14 16:33:22 EDT 1999
I totally agree.
I use while 1: (and for(;;) in c) all the time. It seems like a really
good construct, however I always feel a little uneasy, like it is
abusing the language or something..
I wish there was some kind of "officially sanctioned" version of this,
that implied (or even enforced) that the loop was meant to be exited
with a break, somthing like
loop:
...
if ():
break
...
if ():
break
This would have three big advantages:
1) It would be clearer as to what the programmer intends. while 1:
implies looping forever, something like loop: would imply that the loop
is intended to be exited by a break
2) the compiler could enforce (or warn) against loops without a break.
3) as you mention, this would get rid of the useless conditional test.
joel
Hrvoje Niksic wrote:
>
> "Tim Peters" <tim_one at email.msn.com> writes:
>
> > while 1:
> > xxx
> > yyy
> > if not condition:
> > break
>
> Actually, Python is full of `while 1' loops. One gets used to them
> after a while (and my C loops with multiple exit points tend to have
> them too), but they're not really nice. One wonders what's the point
> of having a condition in the while loop if you're not to use it. :-)
--
----------------------------------------------------------------
joeld at anisci.com
More information about the Python-list
mailing list