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package Data::Grid::Row; |
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use warnings FATAL => 'all'; |
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use strict; |
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use base 'Data::Grid::Container'; |
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use overload '@{}' => "cells"; |
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use overload '%{}' => "as_hash"; |
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=head1 NAME |
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Data::Grid::Row - Row implementation for Data::Grid::Table |
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=head1 VERSION |
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Version 0.01_01 |
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=cut |
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our $VERSION = '0.01_01'; |
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=head1 SYNOPSIS |
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# CSV files are themselves only a single table, so the list |
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# context assignment here takes the first and only one. |
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my ($table) = Data::Grid->parse('foo.csv')->tables; |
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while (my $row = $table->next) { |
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my @cells = $row->cells; |
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# or |
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@cells = @$row; |
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# or, if column names were supplied somehow: |
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my %cells = $row->as_hash; |
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# or |
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%cells = %$row; |
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} |
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=head1 METHODS |
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=head2 table |
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Retrieve the L object to which this row |
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belongs. Alias for L. |
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=cut |
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sub table { |
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no overload '%{}'; |
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$_[0]->parent; |
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} |
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=head2 cells |
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Retrieve the cells from the row, as an array in list context or |
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arrayref in scalar context. The array dereferencing operator C<@{}> is |
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also overloaded and works like this: |
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my @cells = @$row; |
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=cut |
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sub cells { |
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Carp::croak("This method is a stub; it must be overridden!"); |
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} |
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=head2 as_hash |
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If the table has a heading or its columns were designated in the |
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constructor or with L, this method will |
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return the row as key-value pairs in list context and a HASH reference |
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in scalar context. If there is no column spec, this method will |
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generate dummy column names starting from 1, like C, C, |
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etc. It will also fill in the blanks if the column spec is shorter |
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than the actual row. If the column spec is longer, the overhang will |
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be populated with Cs. As well it is worth noting that duplicate |
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keys will be clobbered with the rightmost value at this time, though |
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that behaviour may change. As with the other pertinent methods, the |
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hash dereference operator C<%{}> is overloaded and will behave as |
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such: |
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my %cells = %$row; |
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=cut |
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sub as_hash { |
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my $self = shift; |
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my @cols = $self->table->parent->fields or Carp::croak( |
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q{Can't make a hash of cells. The table must have a heading or }, |
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q{the columns must be specified either in the constructor or by }, |
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q{setting them with "columns" in Data::Grid::Table.}); |
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my @cells = $self->cells; |
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my %out; |
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for my $i (0..$#cols) { |
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$out{$cols[$i]} = $cells[$i]; |
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} |
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wantarray ? %out : \%out; |
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} |
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103
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=head1 AUTHOR |
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105
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Dorian Taylor, C<< >> |
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107
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=head1 BUGS |
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109
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Please report any bugs or feature requests to C
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rt.cpan.org>, or through the web interface at |
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L. I will |
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be notified, and then you'll automatically be notified of progress on |
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your bug as I make changes. |
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115
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=head1 SUPPORT |
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You can find documentation for this module with the perldoc command. |
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perldoc Data::Grid::Row |
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122
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You can also look for information at: |
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=over 4 |
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126
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=item * RT: CPAN's request tracker |
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L |
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=item * AnnoCPAN: Annotated CPAN documentation |
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L |
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=item * CPAN Ratings |
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L |
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=item * Search CPAN |
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L |
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=back |
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144
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=head1 SEE ALSO |
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L, L, L, |
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L |
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149
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=head1 LICENSE AND COPYRIGHT |
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151
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Copyright 2010 Dorian Taylor. |
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153
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This program is free software; you can redistribute it and/or modify it |
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under the terms of either: the GNU General Public License as published |
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by the Free Software Foundation; or the Artistic License. |
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See http://dev.perl.org/licenses/ for more information. |
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=cut |
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1; # End of Data::Grid::Row |