On Sun, Sep 14, 2008 at 10:01 AM, cnb <[EMAIL PROTECTED]> wrote:
> this recursive definition of sum thrumped me, is this some sort of
> gotcha or am I just braindead today?
> and yes i know this is easy a a for x in xs acc += x or just using the
> builtin.
>
> def suma(xs, acc=0):
> if len(xs) == 0:
> acc
> else:
> suma(xs[1:], acc+xs[0])
You're just missing the "return" statements?
def suma(xs, acc=0):
if len(xs) == 0:
return acc
else:
return suma(xs[1:], acc+xs[0])
Regards
Marco
--
Marco Bizzarri
http://notenotturne.blogspot.com/
http://iliveinpisa.blogspot.com/
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