Py2.3: Feedback on Sets
eppstein at ics.uci.edu
Mon Aug 18 18:18:52 CEST 2003
In article <7h3d6f3143s.fsf at pc150.maths.bris.ac.uk>,
Michael Hudson <mwh at python.net> wrote:
> Yup! Well, *, anyway. I'd prefer a Haskell-style ++ for
> concatenation, but + isn't totally silly (strings and lists are
> monoids, at least :-). list * int, OTOH, seems a bit smelly to me
> (though I'm not sure what a better spelling would be...).
Multiplication by (nonnegative) integers is a pretty standard thing to
do in monoids, and means close to what Python's list*int syntax does:
add the thing to itself that many times.
I'm not sure why multiplying a list by a negative number produces the
empty list instead of an exception, though.
David Eppstein http://www.ics.uci.edu/~eppstein/
Univ. of California, Irvine, School of Information & Computer Science
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