[Squeak] Newbie permutations
Richard A. O'Keefe
ok at cs.otago.ac.nz
Tue Apr 9 23:45:56 UTC 2002
goran.hultgren at bluefish.se wrote:
> #(1 3 5) permutationsDo: [:each | a addLast: each copy ].
The copy is not really needed.
Yes it is, because otherwise the result will contain several references
to the _same_ permutation, instead of references to _different_ permutations.
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