Perl module that keeps insertion order in hash
DescriptionTie::DxHash implements a hash which preserves insertion order and allows duplicate keys. Tie::DxHash works by storing the hash data in an array of hash references (containing the key/value pairs). This preserves insertion order. A separate set of iterators (one per distinct key) keeps track of the last retrieved value for a given key, thus allowing the successive retrieval of multiple values for the same key to work as expected. Tie::DxHash was originally written to facilitate the use of more complex mod_rewrite rules in Apache configuration files written with Perl Sections.
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