[Python-Dev] a different kind of reduce...
blais at furius.ca
Mon Oct 31 20:13:05 CET 2005
I find myself occasionally doing this:
... = dirname(dirname(dirname(p)))
I'm always--literally every time-- looking for a more functional form,
something that would be like this:
# apply dirname() 3 times on its results, initializing with p
... = repapply(dirname, 3, p)
There is a way to hack something like that with reduce, but it's not
pretty--it involves creating a temporary list and a lambda function:
... = reduce(lambda x, y: dirname(x), [p] + [None] * 3)
Just wondering, does anybody know how to do this nicely? Is there an
easy form that allows me to do this?
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