Learning Perl, 2nd Edition by Randal Shwartz and Tom Christiansen Here are the changes that were made for the 12/98 reprint: (82) last paragraph, line break changed: "songbird" appears as one word, without a hyphen (258) "associative arrays" index entry now reads associative arrays (hashes), 10, 66 (262) added index entry: hashes (see associative arrays)