Peter Hansen <[EMAIL PROTECTED]> writes:
> Sybren Stuvel wrote:
>> Mike Meyer enlightened us with:
>>
>>>>I dislike gotos because it is too easy to inadvertently create
>>>>infinite loops. <10 WINK; 20 GOTO 10>
>>>
>>>And it's impossible without them? <while True: pass>
>> I thought the same thing, but then I read it again and thought about
>> the "inadvertently". As soon as you see a "while True", you _know_
>> it's going to loop forever.
>
> Unless it doesn't, of course:
>
> while True:
> break
My "favorite" infinte loop with while is:
i = 0
while i < 20:
do_process(i)
Note the prominent *lack* of any change to i here?
Oh, for:
from i = 0
invariant 0 <= i <= 20
variant 21 - i
until i > 19
loop
do_process(i)
which throws an exception at the beginning of the second loop.
<mike
--
Mike Meyer <[EMAIL PROTECTED]> http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.
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