Rick Zantow>In any case, what would you want to do that you can't do
(in some way) now?<
You can do all things already, that's not the point, I presume. Some
things added in the last years were already possibile in different
ways.
Rick Zantow>If you have a compelling use case,<
I agree that such use cases aren't much common, but I have found 2-3 of
them every 6 months (but I was used with a Pascal-like language, where
repeat-until is used often). I usually solve the problem with something
like:
while True:
... # things to do
if condition:
break
That isn't nice, looks like coming from an old languge, but works.
Dave Hansen:
do: #or "repeat:"
do_loop_stuff()
until time_to_leave()
I was used with Pascal (that uses repeat-until) but I think the version
with do-while is better, you don't have to remember to invert the
condition. I like the do-while version without the else. To me this
seems a good simple syntax:
do:
val = source.read(1)
process(val)
while val != lastitem
This is from PEP 315, I don't like it, but it's more general:
do:
<setup code>
while <condition>:
<loop body>
I presume you end doing a lot of:
do:
# code
while <condition>:
pass
Is the loop body used often in this situation?
Bye,
bearophile
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