1MakeMethods::Composite(U3s)er Contributed Perl DocumentatMiaokneMethods::Composite(3)
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NAME

6       Class::MakeMethods::Composite - Make extensible compound methods
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SYNOPSIS

9         package MyObject;
10         use Class::MakeMethods::Composite::Hash (
11           new => 'new',
12           scalar => [ 'foo', 'bar' ],
13           array => 'my_list',
14           hash => 'my_index',
15         );
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DESCRIPTION

18       This document describes the various subclasses of Class::MakeMethods
19       included under the Composite::* namespace, and the method types each
20       one provides.
21
22       The Composite subclasses provide a parameterized set of method-
23       generation implementations.
24
25       Subroutines are generated as closures bound to a hash containing the
26       method name and additional parameters, including the arrays of
27       subroutine references that will provide the method's functionality.
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29   Calling Conventions
30       When you "use" this package, the method names you provide as arguments
31       cause subroutines to be generated and installed in your module.
32
33       See "Calling Conventions" in Class::MakeMethods::Standard for more
34       information.
35
36   Declaration Syntax
37       To declare methods, pass in pairs of a method-type name followed by one
38       or more method names.
39
40       Valid method-type names for this package are listed in "METHOD
41       GENERATOR TYPES".
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43       See "Declaration Syntax" in Class::MakeMethods::Standard and "Parameter
44       Syntax" in Class::MakeMethods::Standard for more information.
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46   About Composite Methods
47       The methods generated by Class::MakeMethods::Composite are assembled
48       from groups of "fragment" subroutines, each of which provides some
49       aspect of the method's behavior.
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51       You can add pre- and post- operations to any composite method.
52
53         package MyObject;
54         use Class::MakeMethods::Composite::Hash (
55           new => 'new',
56           scalar => [
57             'foo' => {
58               'pre_rules' => [
59                 sub {
60                   # Don't automatically convert list to array-ref
61                   croak "Too many arguments" if ( scalar @_ > 2 );
62                 }
63               ],
64               'post_rules' => [
65                 sub {
66                   # Don't let anyone see my credit card number!
67                   ${(pop)->{result}} =~ s/\d{13,16}/****/g;
68                 }
69               ],
70             }
71           ],
72         );
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SEE ALSO

75       See Class::MakeMethods for general information about this distribution.
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79perl v5.34.0                      2022-01-21         MakeMethods::Composite(3)
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