accessors::classic (3pm)

  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 (\*(C`-\*(C') 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]>

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