accessors::classic(3) 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 <[email protected]>