From @smls

  ➜ sub f ($a) { $a**2 }; say (^10).hyper.map(&f).list;
  (0 1 4 9 16 25 36 49 64 81)

  ➜ multi f ($a) { $a**2 }; say (^10).hyper.map(&f).list;
  ()

The expected behavior would be for both examples to produce the same (non-empty) list.

(This was first reported by Alexander Moquin in a comment to ticket #​126597, but I think it should have its own ticket.)

From @jnthn

On Fri, 06 May 2016 08​:37​:20 -0700, smls75@​gmail.com wrote​:

➜ sub f ($a) { $a**2 }; say (^10).hyper.map(&f).list;
(0 1 4 9 16 25 36 49 64 81)

➜ multi f ($a) { $a**2 }; say (^10).hyper.map(&f).list;
()

The expected behavior would be for both examples to produce the same
(non-empty) list.

(This was first reported by Alexander Moquin in a comment to ticket
#​126597, but I think it should have its own ticket.)

Fixed in new hyper/race implementation; tests in S07-hyperrace/hyper.t and S07-hyperrace/race.t.

The RT System itself - Status changed from 'new' to 'open'

@jnthn - Status changed from 'open' to 'resolved'