libtie-ixhash-perl 1.21-2 (i386 binary) in ubuntu raring

ordered associative arrays for Perl
 This Perl module implements Perl hashes that preserve the order in which the
 hash elements were added. The order is not affected when values
 corresponding to existing keys in the IxHash are changed. The elements can
 also be set to any arbitrary supplied order. The familiar perl array
 operations can also be performed on the IxHash.