Summary: Flatten/unflatten complex data hashes

Description:
Converts back and forth between a nested hash structure and a flat hash of
delimited key-value pairs. Useful for protocols that only support key-value
pairs (such as CGI and DBMs).

Functional interface
* $flat_hash = flatten($nested_hash, \%options)

Reduces a nested data-structure to key-value form. The top-level
container must be hashref. For example:

URL: https://metacpan.org/release/Hash-Flatten
License: GPL+ or Artistic

Maintainer: nobody