Re: moose reader / writer

Using Moose::Meta::Attribute::Native::Trait::Array lets you write code like...

package Thing;

use Moose;

has '_data' => (
   is => 'ro',
   isa => 'ArrayRef',
   traits => [ 'Array' ],
   default => sub { [] },
#   writer => '_add_data',
#   reader => '_get_data',
   handles => {
     add_data => 'push',
     get_data => 'get',
   },
);

package main;

use Data::Dump;

my $thing = Thing->new;

$thing->add_data({$_ => $_**2 })
    for 1..5;

dd $thing->get_data(2);
dd $thing;

__END__

{ 3 => 9 }
bless({
  _data => [{ 1 => 1 }, { 2 => 4 }, { 3 => 9 }, { 4 => 16 }, { 5 => 25
+ }],
}, "Thing")
[download]

Does that do the job for you?

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Comment on Re: moose reader / writer Download Code

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Re^2: moose reader / writer by ag4ve (Monk) on Sep 19, 2011 at 19:03 UTC
just to update the node for future googlers, this works great (needed 'elements' and not 'get' i think - it's what worked). but, here's what i have: package Thing; use Data::Dumper; use Moose; has 'search' => ( is => 'rw', isa => 'HashRef', ); has '_data' => ( is => 'ro', isa => 'ArrayRef', traits => [ 'Array' ], default => sub { [] }, handles => { _add_data => 'push', _get_data => 'elements', }, ); sub data { my ($self, $stuff, @err) = @_; if( $stuff and ref( $stuff ) eq 'ARRAY' ) { my $values = [ values %{ $self->search } ]; foreach my $row ( @{ $stuff } ) { $self->_add_data( $row ) if( scalar( grep { $_ ~~ $values } v +alues %{ $row } ) > 1 ); } } else { return $self->_get_data; } } 1; [download]	[reply] [d/l]

Replies are listed 'Best First'.

Re^2: moose reader / writer
by ag4ve (Monk) on Sep 19, 2011 at 19:03 UTC

just to update the node for future googlers, this works great (needed 'elements' and not 'get' i think - it's what worked). but, here's what i have:


package Thing;

use Data::Dumper;

use Moose;

has 'search' => (
   is => 'rw',
   isa => 'HashRef',
);

has '_data' => (
   is => 'ro',
   isa => 'ArrayRef',
   traits => [ 'Array' ],
   default => sub { [] },
   handles => {
      _add_data => 'push',
      _get_data => 'elements',
   },
);

sub data {
   my ($self, $stuff, @err) = @_;
   if( $stuff and ref( $stuff ) eq 'ARRAY' ) {
      my $values = [ values %{ $self->search } ];
      foreach my $row ( @{ $stuff } ) {
         $self->_add_data( $row ) if( scalar( grep { $_ ~~ $values } v
+alues %{ $row } ) > 1 );
      }
   } else {
      return $self->_get_data;
   }
}

1;
[download]

[reply]
[d/l]