Re: Rats! vararg assignments don't work
- From: aleax@xxxxxxx (Alex Martelli)
- Date: Wed, 30 May 2007 08:05:43 -0700
samwyse <dejanews@xxxxxxxxx> wrote:
...
Actually, I'm surprised that the PEP does as much as it does. If tuples
are implemented as S-expressions, then something like this:
Tuples are implemented as compact arrays of pointer-to-PyObject (so are
lists, BTW). So, for example, a 10-items tuple takes 40 bytes (plus a
small overhead for the header) on a 32-bit build, not 80 as it would if
implemented as a linked list of (pointer-to-object, pointer-to-next)
pairs; addressing sometuple[N] is O(1), NOT O(N); etc, etc.
Alex
.
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