1MakeMethods::Template::UHsaesrh(C3o)ntributed Perl DocumMeankteaMteitohnods::Template::Hash(3)
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6 Class::MakeMethods::Template::Hash - Method interfaces for hash-based
7 objects
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10 package MyObject;
11 use Class::MakeMethods::Template::Hash (
12 new => [ 'new' ],
13 scalar => [ 'foo', 'bar' ]
14 );
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16 package main;
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18 my $obj = MyObject->new( foo => "Foozle", bar => "Bozzle" );
19 print $obj->foo();
20 $obj->bar("Bamboozle");
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23 These meta-methods create and access values within blessed hash
24 objects.
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26 Common Parameters: The following parameters are defined for Hash meta-
27 methods.
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29 hash_key
30 The hash key to use when retrieving values from each hash instance.
31 Defaults to '*', the name of the meta-method.
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33 Changing this allows you to change an accessor method name to
34 something other than the name of the hash key used to retrieve its
35 value.
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37 Note that this parameter is not portable to the other
38 implementations, such as Global or InsideOut.
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40 You can take advantage of parameter expansion to define methods
41 whose hash key is composed of the defining package's name and the
42 individual method name, such as "$self->{MyObject-foo}":
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44 'hash_key' => '*{target_class}-*{name}'
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46 Common Behaviors
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48 Behavior: delete
49 Deletes the named key and associated value from the current hash
50 instance.
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52 Standard Methods
53 The following methods from Generic are all supported:
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55 new
56 scalar
57 string
58 string_index
59 number
60 boolean
61 bits (*)
62 array
63 hash
64 tiedhash
65 hash_of_arrays
66 object
67 instance
68 array_of_objects
69 code
70 code_or_scalar
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72 See Class::MakeMethods::Template::Generic for the interfaces and
73 behaviors of these method types.
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75 The items marked with a * above are specifically defined in this
76 package, whereas the others are formed automatically by the interaction
77 of this package's generic settings with the code templates provided by
78 the Generic superclass.
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80 struct
81 struct => [ qw / foo bar baz / ];
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83 Creates methods for setting, checking and clearing values which are
84 stored by position in an array. All the slots created with this meta-
85 method are stored in a single array.
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87 The argument to struct should be a string or a reference to an array of
88 strings. For each string meta-method x, it defines two methods: x and
89 clear_x. x returns the value of the x-slot. If called with an
90 argument, it first sets the x-slot to the argument. clear_x sets the
91 slot to undef.
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93 Additionally, struct defines three class method: struct, which returns
94 a list of all of the struct values, struct_fields, which returns a list
95 of all the slots by name, and struct_dump, which returns a hash of the
96 slot-name/slot-value pairs.
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99 See Class::MakeMethods for general information about this distribution.
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101 See Class::MakeMethods::Template for more about this family of
102 subclasses.
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104 See Class::MakeMethods::Template::Generic for information about the
105 various accessor interfaces subclassed herein.
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109perl v5.38.0 2023-07-20 MakeMethods::Template::Hash(3)