Let's assume that the way Moose::Meta::Attribute::Native does it is the best possible way (given that it's part of Moose core now). Then the best possible way is, rather than including a BUILD method, use:

after 'install_accessors' => sub {
  my $self = shift;
  # ...
};

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In reply to Re: Moose: Adding methods to a class via attribute traits by tobyink
in thread Moose: Adding methods to a class via attribute traits by Nasrudin

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