Thanks for all the good answers.
In fact the `Extended Iterable Unpacking' is exactly what I was looking for.
Ok, my main aspect of writing
head, *tail = seq
instead of
head, tail = seq[0], seq[1:]
is the syntactic sugar. As mentioned in the PEP this may also be faster when
iterables are involved.
Stefan
"Matimus" <[EMAIL PROTECTED]> schrieb im Newsbeitrag
news:[EMAIL PROTECTED]
>> Is there a pattern matching construct in Python like (head : tail),
>> meaning
>> 'head' matches the first element of a list and 'tail' matches the rest? I
>> could not find this in the Python documentation.
>
> Not really, but you could do something like this:
>
> [code]
> def foo(head, *tail):
> #do stuff with head and tail
>
> foo(*seq)
> [/code]
>
> Also, Python 3.0 will have `Extended Iterable Unpacking'
> http://www.python.org/dev/peps/pep-3132/
>
> This isn't quite the same as Haskell's type matching, but would enable
> similar behavior in some cases.
>
> example:
> [code]
> head, *tail = seq
> [/code]
>
> Which would assign the first element of seq to head, and the remainder
> to tail.
>
> Matt
>
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