http://www.perlmonks.org?node_id=1038854


in reply to Re^9: Storing/parsing perl data structure in/from a file
in thread Storing/parsing perl data structure in/from a file

Sorry to make it confusing but my intention is to be able to `do` a file with the information below and flag that key alpha->beta and later alpha->beta->gamma is defined twice. Duplicate keys can be at any level of the multi-level hash.
{ alpha => { beta => { gamma => theta, delta => lambda, }, beta => { gamma => zeta, }, }, },