# New Ticket Created by 刘刊
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17:58 < kanl> is Set no longer extendable?
17:58 < kanl> m: class Foo is Set { method foo( $foo ) { self{$foo} = True;
self } }; my $f = Foo.new.foo: 'a'; $f.say;
17:58 <+camelia> rakudo-moar 533d1a: OUTPUT«Method 'BUILD' not found for
invocant of class 'Foo' in block <unit> at
/tmp/75lUH25_wJ:1»
18:17 < jnthn> kanl: I think it's a bug that you can't inherit from Set.
