bisectable6

query

role Foo { has Int $.foo; submethod BUILD(Int :$foo) { $!foo = $foo; }; class Bar does Foo { submethod TWEAK(:$foo = 1) { $!foo := $foo; } }; my Bar $bar .= new; say $bar.foo

result

Output on both points: «===SORRY!=== Error while compiling /tmp/xivJINgsKf
Cannot declare our-scoped class inside of a role
(the scope inside of a role is generic, so there is no unambiguous
package to install the symbol in)
at /tmp/xivJINgsKf:1
------> o) { $!foo = $foo; }; class Bar does Foo⏏ { submethod TWEAK(:$foo = 1) { $!foo :=
»