unit class Top; has $!rdp = 'bar'; submethod TWEAK { my $rdp := $!rdp; for <A B C> { my $OK = True; require ::("Plugin::$_"); CATCH { $OK = False; .resume } ::("Plugin::$_").new.enable($rdp) if $OK } }

unit class Plugin::A; method enable($foo) { put "$foo enabled in A" }

unit class Plugin::C; method enable($foo) { put "$foo enabled in C" }