Thanks :)
Come to think of it, there's another beautification I realised later: Changing
print (join ('->', @_) . "->$key - $value\n");
to
print (join ('->', @_, $key) . " - $value\n");
Because joining first and then appending the last bit of data manually is ugly :-P

In reply to Re^5: getting keys of multi-level hashrefs by Neighbour
in thread getting keys of multi-level hashrefs by mask_man

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