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vars(3)


NAME

  vars - Perl pragma to predeclare global variable names (obsolete)


SYNOPSIS

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


DESCRIPTION

  NOTE: For variables in the current package, the functionality provided by
  this pragma has been superseded by "our" declarations, available in Perl
  v5.6.0 or later.  See "our" in perlfunc.

  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 "Pragmatic Modules" in perlmodlib.

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