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package Data::Hash::Totals; |
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use warnings; |
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use strict; |
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=head1 NAME |
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Data::Hash::Totals - Handle hashes that are totals or counts |
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=head1 VERSION |
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Version 0.10 |
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=cut |
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our $VERSION = '0.10'; |
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=head1 SYNOPSIS |
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This module is so butt simple, but I'm tired of redoing this code over and over again. |
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my %fave_stooge_votes = ( |
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Moe => 31, |
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Larry => 15, |
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Curly => 97, |
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Shemp => 3, |
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); |
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print as_table( \%fave_stooge_votes ); |
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prints the following: |
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97 Curly |
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31 Moe |
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15 Larry |
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3 Shemp |
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=cut |
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use Exporter; |
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our @ISA = qw( Exporter ); |
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our @EXPORT = qw( as_table ); |
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our @EXPORT_OK = qw( as_table ); |
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=head1 EXPORTS |
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Exports C. |
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=head1 FUNCTIONS |
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=head2 as_table( $hashref [, key1 => value1 ] ) |
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Prints the contents of I<$hashref> as a table in descending value |
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order. |
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I/I pairs modify the output style. Currently, all |
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that's supported is C<< comma => 1 >> to insert commas in the |
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numbers. |
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=cut |
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sub as_table { |
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my $hash = shift; |
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my %parms = @_; |
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my %display_values; |
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my $longest = 0; |
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for my $key ( keys %$hash ) { |
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my $disp = $hash->{$key}; |
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$disp = _commify( $disp ) if $parms{comma}; |
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$display_values{ $key } = $disp; |
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$longest = length( $disp ) if length( $disp ) > $longest; |
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} |
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for my $disp ( values %display_values ) { |
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my $diff = $longest - length($disp); |
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$disp = (" " x $diff) . $disp if $diff; |
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} |
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my @keys = sort { |
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$hash->{$b} <=> $hash->{$a} # Values descending |
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or $a cmp $b # Keys ascending |
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} keys %$hash; |
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my @lines = map { sprintf( "%s %s\n", $display_values{$_}, $_ ) } @keys; |
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return @lines; |
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} |
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sub _commify { |
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my $text = reverse $_[0]; |
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$text =~ s/(\d\d\d)(?=\d)(?!\d*\.)/$1,/g; |
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return scalar reverse $text; |
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} |
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=head1 AUTHOR |
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Andy Lester, C<< >> |
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=head1 BUGS |
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Please report any bugs or feature requests to |
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C, or through the web interface at |
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L. I will be notified, and then you'll automatically |
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be notified of progress on your bug as I make changes. |
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=head1 ACKNOWLEDGEMENTS |
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=head1 COPYRIGHT & LICENSE |
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Copyright 2004 Andy Lester, All Rights Reserved. |
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This program is free software; you can redistribute it and/or modify it |
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under the same terms as Perl itself. |
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114
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=cut |
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1; # End of Data::Hash::Totals |