vars(3)								       vars(3)

NAME    [Toc]    [Back]

     vars - Perl pragma	to predeclare global variable names

SYNOPSIS    [Toc]    [Back]

	 use vars qw($frob @mung %seen);

DESCRIPTION    [Toc]    [Back]

     This will predeclare all the variables whose names	are in the list,
     allowing you to use them under "use strict", and disabling	any typo
     warnings.

     Unlike pragmas that affect	the $^H	hints variable,	the use	vars and use
     subs declarations are not BLOCK-scoped.  They are thus effective for the
     entire file in which they appear.	You may	not rescind such declarations
     with no vars or no	subs.

     Packages such as the AutoLoader and SelfLoader that delay loading of
     subroutines within	packages can create problems with package lexicals
     defined using my(). While the vars	pragma cannot duplicate	the effect of
     package lexicals (total transparency outside of the package), it can act
     as	an acceptable substitute by pre-declaring global symbols, ensuring
     their availability	to the later-loaded routines.

     See the section on	Pragmatic Modules in the perlmod manpage.


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