En Sat, 10 Oct 2009 19:32:25 -0300, Björn Lindqvist <bjou...@gmail.com>
escribió:
I have many times screwed up "while True"-loops. When I thought I had
a safe exit condition which turned out to be never reached in some
rare corner cases. Leading to weird bugs with hanging threads. I have
seen colleges screw up in the same way too.
But that's not a problem with the "while True:" construct, that's a
problem with your condition. Had you written the code using "while
some_condition:" it would have failed in the same way.
[...] Recursive functions
can also be more readable than "while True" because it is easier to
make the exit condition explicit. But sometimes they are necessary and
then you have to be careful to check that the "while True" always
breaks somewhere.
That's true for any loop. The only difference is, with a "while
condition:" loop, the condition is right at the while statement. In a
"while True:" loop, you have to look for the condition elsewhere (likely,
an "if" statement preceding a "break").
--
Gabriel Genellina
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