Re: Stuff a hash from two source files

In article <87hcwq8xx5.fsf@xxxxxxxxxxxxxxxxx>,
Alan_C <mtbr0228AT@xxxxxxxxxxxxxxxx> wrote:


$data{$box}{prior} = $prior; #??
This is called a hash of hashes (HOH). The perldoc's perlreftut and
perldsc are good. This line could also be written as
$data{$box}->{prior} = ...
}
# print @box_items;

# while (<BOX>) {
foreach ( @box_items ) {
($box,$group) = split;
$data{$box}{group} = $group; #??
Same comment as above
}

for my $table ( sort by_type( keys %data )) {
my @data = ($table, @{ $data{$table} } {qw/group prior/}); #??
This is called a hash slice. It is equivalent to
my @data = ($table, $data{$table}->{group}, $data{$table}->{prior} )

print "@data\n";
}

sub by_type {
$data{$a}{prior} <=> $data{$b}{prior}; #??
Same comment as first one
}
__DATA__
712480 3
712481 2
712482 1
712480 firstgreen
712481 firstblack
712482 firstblue

Hope that helps.

Boyd
.

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