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The C<lazy> directive denotes whether the attribute will be constructed
on-demand, or on-construction. See the L<Moo> documentation for more details.

=item new

  # lazy attribute
  # create new_${attribute}

  new => 1

The C<new> directive, if truthy, denotes that the attribute will be constructed
on-demand, i.e. is lazy, with a builder named C<new_{attribute}>. This ability
is not supported by the L<Moo> object superclass.

=item pre|predicate

  # create has_${attribute}

  pre => 1
  predicate => 1

The C<predicate> directive expects a coderef and generates a method for
checking the existance of the attribute. See the L<Moo> documentation for more
details.

=item rdr|reader

  # attribute reader

  rdr => $reader
  reader => $reader

The C<reader> directive denotes the name of the method to be used to "read" and
return the attribute's value. See the L<Moo> documentation for more details.

=item tgr|trigger

  # attribute trigger

  tgr => $trigger
  trigger => $trigger

The C<trigger> directive expects a coderef and is executed whenever the
attribute's value is changed. See the L<Moo> documentation for more details.

=item use

  # lazy dependency injection

  use => ['service', 'datetime']

The C<use> directive denotes that the attribute will be constructed
on-demand, i.e. is lazy, using a custom builder meant to perform service
construction. This directive exists to provide a simple dependency injection
mechanism for class attributes. This ability is not supported by the L<Moo>
object superclass.

=item wkr|weak_ref

  # weaken ref

  wkr => 1
  weak_ref => 1

The C<weak_ref> directive is used to denote if the attribute's value should be
weakened. See the L<Moo> documentation for more details.

=item wrt|writer

  # attribute writer

  wrt => $writer
  writer => $writer

The C<writer> directive denotes the name of the method to be used to "write"
and return the attribute's value. See the L<Moo> documentation for more
details.

=back

=head1 CREDITS

Al Newkirk, C<+319>

Anthony Brummett, C<+10>

Adam Hopkins, C<+2>

José Joaquín Atria, C<+1>

=cut

=head1 AUTHOR

Al Newkirk, C<awncorp@cpan.org>

=head1 LICENSE

Copyright (C) 2011-2019, Al Newkirk, et al.

This is free software; you can redistribute it and/or modify it under the terms
of the The Apache License, Version 2.0, as elucidated here,
https://github.com/iamalnewkirk/do/blob/master/LICENSE.

=head1 PROJECT

L<Wiki|https://github.com/iamalnewkirk/do/wiki>

L<Project|https://github.com/iamalnewkirk/do>

L<Initiatives|https://github.com/iamalnewkirk/do/projects>

L<Milestones|https://github.com/iamalnewkirk/do/milestones>

L<Contributing|https://github.com/iamalnewkirk/do/blob/master/CONTRIBUTE.mkdn>

L<Issues|https://github.com/iamalnewkirk/do/issues>

=head1 SEE ALSO

To get the most out of this distribution, consider reading the following:

L<Do>

L<Data::Object>