NAME
    Is::Kennitala - Validate and process Icelandic identity numbers

SYNOPSIS
        # Functional interface
        use Is::Kennitala qw< :all >;

        my $kt = '0902862349'; # Yours truly

        if ( valid $kt ) {
            # Extract YYYY-MM-DD
            my $year  = year  $kt;
            my $month = month $kt
            my $day   = day   $kt;

            # ...
        }

        # OO interface that doesn't pollute your namespace
        use Is::Kennitala;

        my $kt = Is::Kennitala->new( '0902862349' );

        if ( $kt->valid and $kt->person ) {
            printf "You are a Real Boy(TM) born on %d-%d-%d\n",
                $kt->year, $kt->month, $kt->day;
        } elsif ( $kt->valid and $kt->comany ) {
            warn "Begone, you spawn of capitalims!";
        } else {
            die "EEEK!";
        }

DESCRIPTION
    A *kennitala* (Icelandic: *identity number*) is a 10 digit unique
    identity number given to persons and corporations in Iceland. This
    module provides an interface for validating these numbers and extracting
    information from them.

METHODS & FUNCTIONS
  new
    Optional constructor which takes a valid kennitala or a fragment as its
    argument. Returns an object that stringifies to whatever string is
    provided.

    If a fragment is provided functions in this package that need
    information from the omitted part (such as "year") will not work.

  valid
    Takes a 9-10 character kennitala and returns true if its checksum is
    valid, false otherwise.

  checksum
    Takes a the first 8 characters of a kennitala and returns the 9th
    checksum digit.

  person
    Returns true if the kennitala belongs to an individual, false otherwise.

  company
    Returns true if the kennitala belongs to a company, false otherwise.

  year
    Return the four-digit year part of the kennitala. For this function to
    work a complete 10-digit number must have been provided.

  month
    Return the two-digit month part of the kennitala.

  day
    Return the two-digit day part of the kennitala.

CAVEATS
    Only supports identity numbers assigned between the years 1800-2099

BUGS
    Please report any bugs that aren't already listed at
    <http://rt.cpan.org/Dist/Display.html?Queue=Is-Kennitala> to
    <http://rt.cpan.org/Public/Bug/Report.html?Queue=Is-Kennitala>

SEE ALSO
    <http://www.hagstofa.is/?PageID=1474>

AUTHOR
    Ævar Arnfjörð Bjarmason <avar@cpan.org>

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