HaloO, On Friday, 27. March 2009 12:57:49 Daniel Ruoso wrote: > 1 - multi infix:<+>(Set $set, Num $a) > This would return another set, with each value of $set summed with $a.
I think that this mixed case should numify the set to the number of elements to comply with array semantics. infix:<+> should remain a numeric operator and numify other operant types. This operator orientation is a strong feature of Perl 6 and should not be diluted by overloads with non-numeric meanings. > 2 - multi infix:<+>(Set $a, Set $b) > This would return another set, with $a.values X+ $b.values, already > removing duplicated values, as expected from a set. Even the homogeneous case should adhere to numeric semantics. Set operations are with parens. So disjoint union creation is (+). We could try to get a meta parens so that (X+) is conceivably auto-generated. OTOH it collides with (+) visually. Regards, TSa. -- "The unavoidable price of reliability is simplicity" -- C.A.R. Hoare "Simplicity does not precede complexity, but follows it." -- A.J. Perlis 1 + 2 + 3 + 4 + ... = -1/12 -- Srinivasa Ramanujan
