in reply to Re: Searching through a hash
in thread Searching through a hash

Yeah that looks good, thanks! So with this %$cols, I have a question. When you put the % attached to $cols, is that telling perl that there's actually a hash stored in this variable, so let's treat it like that? I am going to do some XML manipulation when I figure out how to traverse the hash correctly. For testing right now, how would I iterate through the entire %$cols values, printing them out, and then jumping back up to the next $row when done. Thanks!

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Re^3: Searching through a hash
by ikegami (Patriarch) on Nov 05, 2007 at 22:32 UTC

    $cols contains a reference to a hash. %$cols (short for %{$cols}) means to access the hash referenced by the reference in $cols. See perlref. 

    my @sorted_col_names = sort { length($a) <=> length($b) || $a cmp $b }
                       keys %$cols;

foreach my $col_name (@sorted_col_names) {
   my $cell = $col->{$col_name};
   print("$cell\t");
}

print("\n");

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