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class::methodmaker::scalar(3pm) [debian man page]

Class::MethodMaker::scalar(3pm) 			User Contributed Perl Documentation			   Class::MethodMaker::scalar(3pm)

NAME
Class::Method::scalar - Create methods for handling a scalar value. SYNOPSIS
package MyClass; use Class::MethodMaker [ scalar => [qw/ a -static s /]]; sub new { my $class = shift; bless {}, $class; } package main; my $m = MyClass->new; my $a, $x; $a = $m->a; # *undef* $x = $m->a_isset; # false $a = $m->a(1); # 1 $m->a(3); $x = $m->a_isset; # true $a = $m->a; # 3 $a = $m->a(5); # 5; $m->a_reset; $x = $m->a_isset; # false DESCRIPTION
Creates methods to handle array values in an object. For a component named "x", by default creates methods "x", "x_reset", "x_isset", "x_clear". Methods available are: "*" $m->a(3); $a = $m->a; # 3 $a = $m->a(5); # 5; Created by default. If an argument is provided, the component is set to that value. The method returns the value of the component (after assignment to a provided value, if appropriate). *_reset $m->a_reset; Created by default. Resets the component back to its default. Normally, this means that *_isset will return false, and "*" will return undef. If "-default" is in effect, then the component will be set to the default value, and *_isset will return true. If "-default_ctor" is in effect, then the default subr will be invoked, and its return value used to set the value of the component, and *_isset will return true. Advanced Note: actually, defaults are assigned as needed: typically, the next time a the value of a component is read. *_isset print $m->a_isset ? "true" : "false"; Created by default. Whether the component is currently set. This is different from being defined; initially, the component is not set (and if read, will return undef); it can be set to undef (which is a set value, which also returns undef). Having been set, the only way to unset the component is with <*_reset>. If a default value is in effect, then <*_isset> will always return true. *_clear $m->a(5); $a = $m->a; # 5 $x = $m->a_isset; # true $m->a_clear; $a = $m->a; # *undef* $x = $m->a_isset; # true Created by default. A shorthand for setting to undef. Note that the component will be set to undef, not reset, so *_isset will return true. *_get package MyClass; use Class::MethodMaker [ scalar => [{'*_get' => '*_get'}, 'a'], new => new, ]; package main; my $m = MyClass->new; $m->a(3); $a = $m->a_get; # 3 $a = $m->a_get(5); # 3; ignores argument $a = $m->a_get(5); # 3; unchanged by previous call Created on request. Retrieves the value of the component without setting (ignores any arguments passed). *_set package MyClass; use Class::MethodMaker [ scalar => [{'*_set' => '*_set'}, 'a'], new => new, ]; package main; my $m = MyClass->new; $m->a(3); $a = $m->a_set; # *undef* $a = $m->a_set(5); # *undef*; value is set but not returned $a = $m->a; # 5 Created on request. Sets the component to the first argument (or undef if no argument provided). Returns no value. perl v5.14.2 2011-11-15 Class::MethodMaker::scalar(3pm)

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Class::MethodMaker::scalar(3)				User Contributed Perl Documentation			     Class::MethodMaker::scalar(3)

NAME
Class::Method::scalar - Create methods for handling a scalar value. SYNOPSIS
package MyClass; use Class::MethodMaker [ scalar => [qw/ a -static s /]]; sub new { my $class = shift; bless {}, $class; } package main; my $m = MyClass->new; my $a, $x; $a = $m->a; # *undef* $x = $m->a_isset; # false $a = $m->a(1); # 1 $m->a(3); $x = $m->a_isset; # true $a = $m->a; # 3 $a = $m->a(5); # 5; $m->a_reset; $x = $m->a_isset; # false DESCRIPTION
Creates methods to handle array values in an object. For a component named "x", by default creates methods "x", "x_reset", "x_isset", "x_clear". Methods available are: "*" $m->a(3); $a = $m->a; # 3 $a = $m->a(5); # 5; Created by default. If an argument is provided, the component is set to that value. The method returns the value of the component (after assignment to a provided value, if appropriate). *_reset $m->a_reset; Created by default. Resets the component back to its default. Normally, this means that *_isset will return false, and "*" will return undef. If "-default" is in effect, then the component will be set to the default value, and *_isset will return true. If "-default_ctor" is in effect, then the default subr will be invoked, and its return value used to set the value of the component, and *_isset will return true. Advanced Note: actually, defaults are assigned as needed: typically, the next time a the value of a component is read. *_isset print $m->a_isset ? "true" : "false"; Created by default. Whether the component is currently set. This is different from being defined; initially, the component is not set (and if read, will return undef); it can be set to undef (which is a set value, which also returns undef). Having been set, the only way to unset the component is with <*_reset>. If a default value is in effect, then <*_isset> will always return true. *_clear $m->a(5); $a = $m->a; # 5 $x = $m->a_isset; # true $m->a_clear; $a = $m->a; # *undef* $x = $m->a_isset; # true Created by default. A shorthand for setting to undef. Note that the component will be set to undef, not reset, so *_isset will return true. *_get package MyClass; use Class::MethodMaker [ scalar => [{'*_get' => '*_get'}, 'a'], new => new, ]; package main; my $m = MyClass->new; $m->a(3); $a = $m->a_get; # 3 $a = $m->a_get(5); # 3; ignores argument $a = $m->a_get(5); # 3; unchanged by previous call Created on request. Retrieves the value of the component without setting (ignores any arguments passed). *_set package MyClass; use Class::MethodMaker [ scalar => [{'*_set' => '*_set'}, 'a'], new => new, ]; package main; my $m = MyClass->new; $m->a(3); $a = $m->a_set; # *undef* $a = $m->a_set(5); # *undef*; value is set but not returned $a = $m->a; # 5 Created on request. Sets the component to the first argument (or undef if no argument provided). Returns no value. perl v5.12.1 2010-07-01 Class::MethodMaker::scalar(3)
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