accessors::classic(3) User Contributed Perl Documentationaccessors::classic(3)NAMEaccessors::classic - create 'classic' read/write accessor methods in
caller's package.
SYNOPSIS
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" );
DESCRIPTION
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 compatability.
PERFORMANCE
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.
CAVEATS
Classes using blessed scalarrefs, arrayrefs, etc. are not supported for
sake of simplicity. Only hashrefs are supported.
AUTHOR
Steve Purkis <spurkis@cpan.org>
SEE ALSO
accessors, accessors::rw, accessors::ro, accessors::chained, base
perl v5.14.1 2011-06-20 accessors::classic(3)