E.g. given the array @a = qw/foo bar burp/ and the value 1, create a hash like 
%h = (
      'foo' => {
                 'bar' => {
                            'burp' => 1
                          }
               }
      );

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Originally posted as a Categorized Question.

In reply to How to create nesting hashes given the innermost value and an array of keys? by EchoAngel

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