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accessors::classic(3pm) User Contributed Perl Documentation accessors::classic(3pm)


accessors::classic - create 'classic' read/write accessor methods in caller's package.


  package Foo;
  use accessors::classic qw( foo bar baz );
  my $obj = bless {}, 'Foo';
  # always return the current value, even on set:
  $obj->foo( 'hello ' ) if $obj->bar( 'world' ) eq 'world';
  print $obj->foo, $obj->bar, $obj->baz( "!\n" );


The accessors::classic pragma lets you create simple classic Perl accessors at compile-time.

The generated methods look like this:

  sub foo {
      my $self = shift;
      $self->{foo} = shift if (@_);
      return $self->{foo};

They always return the current value.

Note that there is no dash ("-") prepended to the property name as there are in accessors. This is for backwards compatibility.


There is little-to-no performace hit when using generated accessors; in fact there is usually a performance gain.

  • typically 5-15% faster than hard-coded accessors (like the above example).
  • typically 1-15% slower than optimized accessors (less readable).
  • typically a small performance hit at startup (accessors are created at compile-time).
  • uses the same anonymous sub to reduce memory consumption (sometimes by 80%).

See the benchmark tests included with this distribution for more details.


Classes using blessed scalarrefs, arrayrefs, etc. are not supported for sake of simplicity. Only hashrefs are supported.


Steve Purkis <>


accessors, accessors::rw, accessors::ro, accessors::chained, base

2022-10-13 perl v5.34.0