A recent rakudo commit [1] is a quick fix for #78896 [2] to allow exponentiation of Duration's.
I'm uneasy with allowing this and I think the spec probably meant not to but is badly worded [3]: Durations allow additive operations with other durations, and allow any numeric operation with a number as the other argument: $duration * $duration # WRONG, durations aren't geometric $duration * 2 # ok, a duration twice as long 2 * $duration # same What are your thoughts? [1] https://github.com/rakudo/rakudo/commit/d9e22463479927fa8f1f594753979022de35970d [2] http://rt.perl.org/rt3/Ticket/Display.html?id=78896 [3] https://github.com/perl6/specs/commit/32abb95b9776e1cb7672c8a6a77612c86b37aea2#L0R1333