V/can be changed to the more expected
/. I haven't pushed the change to github yet -- I'm not sure what the right policy is in dealing with forcing any potential Vector users to be on the bleeding edge.
Though as nearly as I can tell, today's Rakudo works perfectly on my MacBook -- actually passes all the spectests, unlike the last official release. The only downside is one of the other Vector tests now fails. It's not exactly a crucial test, but it is a puzzling failure to me. I'm trying now to find out whether the test is wrong or something has broken in Rakudo.
The other thing I learned about was
class XXXX is also, which allows you to add additional methods to a class. I've used this to resolve Vector's minor DRY issue: now the definition of the dot product operators comes before the definition of
Vector.Lengthto use dot product internally.