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package t::Util; use strict; use warnings; use Data::MessagePack; sub import { my $pkg = caller(0); strict->import; warnings->import; no strict 'refs'; *{"$pkg\::true"} = \&Data::MessagePack::true; *{"$pkg\::false"} = \&Data::MessagePack::false; *{"$pkg\::null"} = sub() { undef }; } 1;