Matthew Simon Cavalletto > Class-MakeMethods-1.009 > Class::MakeMethods::Composite::Global

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Module Version: 1   Source   Latest Release: Class-MakeMethods-1.01

NAME ^

Class::MakeMethods::Composite::Global - Global data

SYNOPSIS ^

  package MyClass;
  use Class::MakeMethods::Composite::Global (
    scalar => [ 'foo' ],
    array  => [ 'my_list' ],
    hash   => [ 'my_index' ],
  );
  ...
  
  MyClass->foo( 'Foozle' );
  print MyClass->foo();

  print MyClass->new(...)->foo(); # same value for any instance
  print MySubclass->foo();        # ... and for any subclass
  
  MyClass->my_list(0 => 'Foozle', 1 => 'Bang!');
  print MyClass->my_list(1);
  
  MyClass->my_index('broccoli' => 'Blah!', 'foo' => 'Fiddle');
  print MyClass->my_index('foo');

DESCRIPTION ^

The Composite::Global suclass of MakeMethods provides basic accessors for shared data.

Class::MakeMethods Calling Interface

When you use this package, the method declarations you provide as arguments cause subroutines to be generated and installed in your module.

You can also omit the arguments to use and instead make methods at runtime by passing the declarations to a subsequent call to make().

You may include any number of declarations in each call to use or make(). If methods with the same name already exist, earlier calls to use or make() win over later ones, but within each call, later declarations superceed earlier ones.

You can install methods in a different package by passing -TargetClass => package as your first arguments to use or make.

See Class::MakeMethods for more details.

Class::MakeMethods::Basic Declaration Syntax

The following types of Basic declarations are supported:

See the "METHOD GENERATOR TYPES" section below for a list of the supported values of generator_type.

For each method name you provide, a subroutine of the indicated type will be generated and installed under that name in your module.

Method names should start with a letter, followed by zero or more letters, numbers, or underscores.

Class::MakeMethods::Composite Declaration Syntax

The Composite syntax also provides several ways to optionally associate a hash of additional parameters with a given method name.

Basic declarations, as described above, are given an empty parameter hash.

METHOD GENERATOR TYPES ^

scalar - Global Accessor

For each method name passed, uses a closure to generate a subroutine with the following characteristics:

Sample declaration and usage:

  package MyClass;
  use Class::MakeMethods::Composite::Global (
    scalar => 'foo',
  );
  ...
  
  # Store value
  MyClass->foo('Foozle');
  
  # Retrieve value
  print MyClass->foo;

array - Global Ref Accessor

For each method name passed, uses a closure to generate a subroutine with the following characteristics:

Sample declaration and usage:

  package MyClass;
  use Class::MakeMethods::Composite::Global (
    array => 'bar',
  );
  ...
  
  # Clear and set contents of list
  print MyClass->bar([ 'Spume', 'Frost' ] );  
  
  # Set values by position
  MyClass->bar(0 => 'Foozle', 1 => 'Bang!');
  
  # Positions may be overwritten, and in any order
  MyClass->bar(2 => 'And Mash', 1 => 'Blah!');
  
  # Retrieve value by position
  print MyClass->bar(1);
  
  # Direct access to referenced array
  print scalar @{ MyClass->bar() };

There are also calling conventions for slice and splice operations:

  # Retrieve slice of values by position
  print join(', ', MyClass->bar( undef, [0, 2] ) );
  
  # Insert an item at position in the array
  MyClass->bar([3], 'Potatoes' );  
  
  # Remove 1 item from position 3 in the array
  MyClass->bar([3, 1], undef );  
  
  # Set a new value at position 2, and return the old value 
  print MyClass->bar([2, 1], 'Froth' );

hash - Global Ref Accessor

For each method name passed, uses a closure to generate a subroutine with the following characteristics:

Sample declaration and usage:

  package MyClass;
  use Class::MakeMethods::Composite::Global (
    hash => 'baz',
  );
  ...
  
  # Set values by key
  MyClass->baz('foo' => 'Foozle', 'bar' => 'Bang!');
  
  # Values may be overwritten, and in any order
  MyClass->baz('broccoli' => 'Blah!', 'foo' => 'Fiddle');
  
  # Retrieve value by key
  print MyClass->baz('foo');
  
  # Retrive slice of values by position
  print join(', ', MyClass->baz( ['foo', 'bar'] ) );
  
  # Direct access to referenced hash
  print keys %{ MyClass->baz() };
  
  # Reset the hash contents to empty
  @{ MyClass->baz() } = ();

object - Global Ref Accessor

For each method name passed, uses a closure to generate a subroutine with the following characteristics:

Sample declaration and usage:

  package MyClass;
  use Class::MakeMethods::Composite::Global (
    object => 'foo',
  );
  ...
  
  # Store value
  MyClass->foo( Foozle->new() );
  
  # Retrieve value
  print MyClass->foo;

SEE ALSO ^

See Class::MakeMethods for general information about this distribution.

See Class::MakeMethods::Composite for more about this family of subclasses.

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