vars::global 0.0.1

vars::global is a Perl module that tries to make global variables a little safer. SYNOPSIS # In the place/package where we want to create globals use vars::global create => qw( $foo @bar %baz ); # Add some more global symbols vars::global->create(qw( $hello @world %now )); # Somewhere else, where we need to access those globals use vars::global qw( $foo @bar %baz ); # Dont try to use globals that do not exist use vars::global qw( $Foo ); # typo, croaks use vars::global qw( @inexistent ); # we dont create by default # use create as above # You can also import and create new globals use vars::global qw( $foo %baz ), create => qw( $hey @joe ); # If youre lazy, you can import all the globals defined so far use vars::global :all; This module lets you define global variables and gain a slight advantage over blind use of package variables. The global variables live inside the vars::global package, with the names given by the user. Where the advantage? Its two-fold: there is an import mechanism that lets you access the global variable without the need to fully qualify its name (i.e. using $foo instead of $vars::global::foo); the import mechanism ensures that you can import only the global variables that have been explicitly declared so far, which reduces the possibility of a typo. If you have already "created" the global variable $foo, the import operation is equivalent to do: *{__PACKAGE__ . ::foo} = $vars::global::foo; that is, the package variable in the current package is made an alias for the global variable. The anti-typo check is simply obtained by doing a check before the above import. Typical usage is as follows: creation Early in the module or in the program you create variables prepending the create word, as follows: use vars::global create => qw( $foo @bar %baz ); access In the modules where you need to access a given global variable, you can import them very simply: use vars::global qw( $foo %baz ); # I dont need @bar here ;) The creation step above automatically imports all the new globals into the current package..

Requirements:	No special requirements
Platforms:	Linux
Keyword:	Create,  Foo,  Global,  Global Variable,  Global Variables,  Import,  Libraries,  Perl Module,  Programming,  Qw,  To Make,  Tries To,  Variables,  Varsglobal
Users rating:	0/10