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package Goo::List; |
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############################################################################### |
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# Nigel Hamilton |
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# Copyright Nigel Hamilton 2005 |
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# All Rights Reserved |
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# |
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# Author: Nigel Hamilton |
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# Filename: Goo::List.pm |
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# Description: Utility functions for handling lists |
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# Date Change |
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# ----------------------------------------------------------------------------- |
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# 27/01/2005 Auto generated file |
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# 27/01/2005 Initially needed a way to split lists |
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# |
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############################################################################### |
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use strict; |
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############################################################################### |
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# |
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# get_unique - return a sorted unique list |
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# |
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############################################################################### |
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sub get_unique { |
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my (@list) = @_; |
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my $seen; |
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foreach my $member (@list) { |
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$seen->{$member} = 1; |
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} |
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return sort { $a cmp $b } keys %$seen; |
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} |
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############################################################################### |
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# |
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# halve_list - split a list in two |
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############################################################################### |
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sub halve_list { |
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my (@list) = @_; |
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my $halfway = scalar(@list)/2; |
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my @list1; |
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my @list2; |
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for (my $i = 0; $i <= $#list; $i++) { |
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if ($i >= $halfway) { |
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push(@list2, $list[$i]); |
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} else { |
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push(@list1, $list[$i]); |
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} |
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} |
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return (\@list1, \@list2); |
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} |
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############################################################################### |
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# |
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# quarter_list - split a list in four! |
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# |
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############################################################################### |
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79
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sub quarter_list { |
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81
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my (@list) = @_; |
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my ($a, $b) = halve_list(@list); |
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my ($list1, $list2) = halve_list(@$a); |
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my ($list3, $list4) = halve_list(@$b); |
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return ($list1, $list2, $list3, $list4); |
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91
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} |
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1; |
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96
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97
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__END__ |
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99
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=head1 NAME |
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100
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101
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Goo::List - Utility functions for handling lists |
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102
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103
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=head1 SYNOPSIS |
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105
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use Goo::List; |
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106
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107
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=head1 DESCRIPTION |
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108
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109
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=head1 METHODS |
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110
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111
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=over |
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113
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=item get_unique |
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115
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return a sorted unique list |
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=item halve_list |
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119
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return a list split in two |
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121
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=item quarter_list |
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123
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return a list split in four |
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125
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=back |
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127
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=head1 AUTHOR |
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129
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Nigel Hamilton <nigel@trexy.com> |
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130
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131
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=head1 SEE ALSO |
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