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cvsjoko |
1.1 |
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# $Id$ |
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# |
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# $Log$ |
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# |
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################################# |
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package OneLineDumpHash; |
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use strict; |
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use warnings; |
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use overload |
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'""' => \&stringify, |
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; |
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sub new { |
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#print "new: ", __PACKAGE__, "\n"; |
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my $class = shift; |
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my $value = shift; |
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#tie(%{$value}, "Tie::IxHash"); |
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#return bless \$value => $class; |
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return bless $value => $class; |
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} |
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sub stringify { |
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my ($x, $y) = @_; |
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# dereference value |
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# TODO: clear this!!! |
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my $value; |
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if ( ref($x) eq 'OneLineDumpHash' ) { |
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$value = $x; |
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} else { |
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$value = $$x; |
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} |
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my @entries; |
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foreach my $h_key (keys %{$value}) { |
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my $h_val = $value->{$h_key}; |
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push @entries, "$h_key: $h_val"; |
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} |
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return join " / ", @entries; |
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} |
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package SummableHash; |
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use strict; |
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use warnings; |
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use base qw(OneLineDumpHash); |
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use overload |
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'+=' => \&sum_hash, |
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; |
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use Tie::IxHash; |
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use Data::Dumper; |
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sub new { |
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#print "new: ", __PACKAGE__, "\n"; |
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my $class = shift; |
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my $value = shift; |
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tie(%{$value}, "Tie::IxHash"); |
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return bless \$value => $class; |
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} |
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sub sum_hash { |
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#print Dumper(@_); |
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my ($x, $y) = @_; |
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#print "x: "; |
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#print Dumper($x); |
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#print "y: "; |
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#print Dumper($y); |
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my $value = $$x; |
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#$value->{sumCount}++; |
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foreach my $key (keys %{$y}) { |
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# initialize key if undefined yet to prevent "Use of uninitialized value in addition (+) at [...]" |
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$value->{$key} ||= 0; |
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# sum up statistic-counts |
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$value->{$key} += $y->{$key}; |
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} |
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return bless \$value => ref($x); |
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} |
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