NAME
    Marlin::XAttribute::Lvalue - Marlin attribute extension for lvalue
    accessors.

SYNOPSIS
      package Local::Person {
        use Marlin::Util -all;
        use Types::Common -types;
        use Marlin
          name => {
            required       => true,
            isa            => Str,
            ':Lvalue'      => true,
          };
      }
  
      my $bob = Local::Person->new( name => 'Bob' );
      say $bob->name;           # "Bob"
      $bob->name = "Robert";    # set a new value
      say $bob->name;           # "Robert"

IMPORTING THIS MODULE
    The standard way to import Marlin attribute extensions is to include them
    in the attribute definition hashrefs passed to `use Marlin`

      package Local::Person {
        use Marlin::Util -all;
        use Types::Common -types;
        use Marlin
          name => {
            required       => true,
            isa            => Str,
            ':Lvalue'      => true,
          };
      }

    It is possible to additionally load it with `use
    Marlin::XAttribute::Lvalue`, which won't *do* anything, but might be
    useful to automatic dependency analysis.

      package Local::Person {
        use Marlin::Util -all;
        use Marlin::XAttribute::Lvalue;
        use Types::Common -types;
        use Marlin
          name => {
            required       => true,
            isa            => Str,
            ':Lvalue'      => true,
          };
      }

DESCRIPTION
    Creates an lvalue accessor for your attribute.

    If your attribute doesn't have any defaults, type constraints or
    coercions, triggers, or anything else to slow it down, then it will be a
    fairly fast lvalue accessor generated by Class::XSAccessor.

    Otherwise, it will be implemented in Pure Perl, and be much slower.

    You can provide a specific name for your lvalue accessor:

      package Local::Person {
        use Marlin::Util -all;
        use Types::Common -types;
        use Marlin
          name => {
            required       => true,
            isa            => Str,
            ':Lvalue'      => 'moniker',
          };
      }
  
      my $alice = Local::Person->new( name => "Alice" );
  
      $alice->moniker = 'Allie';   # Lvalue accessor
      say $alice->name;            # Standard non-lvalue reader

    If you don't provide a specific name, it will be created instead of your
    standard reader/accessor.

    This extension makes no changes to your constructor.

  Usage with `alias_for`
    It should be possible to set `alias_for` to "Lvalue" (with a capital L).

      package Local::Person {
        use Marlin::Util -all;
        use Types::Common -types;
        use Marlin
          name => {
            required       => true,
            isa            => Str,
            ':Lvalue'      => 1,
            alias          => [ qw/ moniker label / ],
            alias_for      => 'Lvalue',
         };
      }
  
      my $x = Local::Person->new( name => 'Bob' );
      $x->moniker = 'Robert';
      say $x->label;  # Robert

BUGS
    Please report any bugs to
    <https://github.com/tobyink/p5-marlin-xattribute-lvalue/issues>.

SEE ALSO
    Marlin, LV.

AUTHOR
    Toby Inkster <tobyink@cpan.org>.

COPYRIGHT AND LICENCE
    This software is copyright (c) 2025-2026 by Toby Inkster.

    This is free software; you can redistribute it and/or modify it under the
    same terms as the Perl 5 programming language system itself.

DISCLAIMER OF WARRANTIES
    THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
    WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
    MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

    🐟🐟