NAME
    Hash::Rename - Rename hash keys

SYNOPSIS
        use Hash::Rename;

        my %hash = (
            '-noforce' => 1,
            scheme     => 'http'
        );
        hash_rename %hash, code => sub { s/^(?!-)/-/ };

DESCRIPTION
    Using this module you can rename a hash's keys in place.

FUNCTIONS
    "hash_rename"
        This function is automatically exported. It takes a hash to rename
        and another hash of instructions on how to rename they keys.

        The syntax is like this:

            hash_rename %hash, key1 => 'value1', keys2 => 'value2';

        The following instructions are supported:

        "prepend"
                hash_rename %hash, prepend => '-';

            The given value is prepended to each hash key.

        "append"
                hash_rename %hash, append => '-';

            The given value is appended to each hash key.

        "code"
                hash_rename %hash, code => sub { s/^(?!-)/-/ };

            Each hash key is localized to $_ and subjected to the code. Its
            new value is the result of $_ after the code has been executed.

        "strict"
            If present and set to a true value, the resulting keys are
            checked for duplicates. "hash_rename()" will die if it detects a
            duplicate resulting hash key. They keys of the hash to change
            are processed in alphabetical order.

        If several instructions are given, they are processed in the order
        in which they are described above. So you can have:

            hash_rename %hash, prepend => '-', append => '=';

BUGS AND LIMITATIONS
    No bugs have been reported.

    Please report any bugs or feature requests through the web interface at
    <http://rt.cpan.org>.

INSTALLATION
    See perlmodinstall for information and options on installing Perl
    modules.

AVAILABILITY
    The latest version of this module is available from the Comprehensive
    Perl Archive Network (CPAN). Visit <http://www.perl.com/CPAN/> to find a
    CPAN site near you. Or see <http://search.cpan.org/dist/Hash-Rename/>.

AUTHORS
    Marcel Grünauer, "<marcel@cpan.org>"

COPYRIGHT AND LICENSE
    Copyright 2007-2009 by the authors.

    This library is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.

