fold

# given {3,[4,5,6],7,{8,8,9,9}}

$hash->fold; # {'3:0'=>4,'3:1'=>5,'3:2'=>6,'7.8'=>8,'7.9'=>9}

The fold method returns a single-level hash reference consisting of key/value pairs whose keys are paths (using dot-notation where the segments correspond to nested hash keys and array indices) mapped to the nested values. This method returns a Data::Object::Hash object.

fold(Str $arg1, HashRef $arg2, HashRef $arg3) : HashObject

method