evalable6

query

my %h = (:a<1 2 3>, :b<4 5 6>, :c<7 8>); say gather for %h.keys -> $k { for @{%h{$k}} -> $v { take $k, $v } }

result

(exit code 1) 
===SORRY!=== Error while compiling /tmp/JtBAZfTelq
Unsupported use of @{%h{$k}; in Perl 6 please use @(%h{$k) for hard ref or @::(%h{$k) for symbolic ref
at /tmp/JtBAZfTelq:1
------>  gather for %h.keys -> $k { for @{%h{$k}⏏} -> $v { take $k, $v } }