NAME
    Dpchrist::LangUtil - Perl language utilities

DESCRIPTION
    This documentation describes module revision $Revision: 1.19 $.

    This is alpha test level software and may change or disappear at any
    time.

  SUBROUTINES
   arrayref_cmp
        arrayref_cmp ARRAYREF,ARRAYREF

    Applies '<=>' (spaceship) operator to array lengths and then applies
    'cmp' operator to array elements in turn. Returns first non-zero
    comparison result encountered, or zero if arrays have equal length and
    if all corresponding elements are equal strings. Returns -1 if an
    undefined value is encountered.

    Calls confess() on error.

   defined_or
        defined_or LIST

    Returns first defined LIST element, void if LIST is empty, or void if
    all LIST elements are the undefined value.

   hashref_keys
        hashref_keys HASHREF

    Returns keys of hash reference.

    Calls confess() on error.

  EXPORT
    None by default.

    All of the subroutines may be imported by using the ':all' tag:

        use Dpchrist::LangUtil         qw( :all );

INSTALLATION
    Old school:

        $ perl Makefile.PL
        $ make    
        $ make test
        $ make install

    Minimal:

        $ cpan Dpchrist::LangUtil

    Complete:

        $ cpan Bundle::Dpchrist

  PREREQUISITES
    See Makefile.PL in the source distribution root directory.

AUTHOR
    David Paul Christensen dpchrist@holgerdanske.com

COPYRIGHT AND LICENSE
    Copyright (c) 2010 by David Paul Christensen dpchrist@holgerdanske.com

    This program is free software; you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
    Free Software Foundation; version 2.

    This program is distributed in the hope that it will be useful, but
    WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
    Public License for more details.

    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.