1accessors::classic(3) User Contributed Perl Documentationaccessors::classic(3)
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NAME

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

10         package Foo;
11         use accessors::classic qw( foo bar baz );
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13         my $obj = bless {}, 'Foo';
14
15         # always return the current value, even on set:
16         $obj->foo( 'hello ' ) if $obj->bar( 'world' ) eq 'world';
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18         print $obj->foo, $obj->bar, $obj->baz( "!\n" );
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DESCRIPTION

21       The accessors::classic pragma lets you create simple classic Perl
22       accessors at compile-time.
23
24       The generated methods look like this:
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26         sub foo {
27             my $self = shift;
28             $self->{foo} = shift if (@_);
29             return $self->{foo};
30         }
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32       They always return the current value.
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34       Note that there is no dash ("-") prepended to the property name as
35       there are in accessors.  This is for backwards compatability.
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PERFORMANCE

38       There is little-to-no performace hit when using generated accessors; in
39       fact there is usually a performance gain.
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41       •   typically 5-15% faster than hard-coded accessors (like the above
42           example).
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44       •   typically 1-15% slower than optimized accessors (less readable).
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46       •   typically a small performance hit at startup (accessors are created
47           at compile-time).
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49       •   uses the same anonymous sub to reduce memory consumption (sometimes
50           by 80%).
51
52       See the benchmark tests included with this distribution for more
53       details.
54

CAVEATS

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

60       Steve Purkis <spurkis@cpan.org>
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SEE ALSO

63       accessors, accessors::rw, accessors::ro, accessors::chained, base
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67perl v5.34.0                      2021-07-23             accessors::classic(3)