ruby use array tvalues to index nested hash of hash [duplicate]

Answer 1

And then there's:

keys.inject(hash, :fetch)

or for earlier Ruby versions:

keys.inject(hash) {|h, k| h[k]}

If you did want to use recursion, a more Rubyesque approach would be:

def get_value(obj, keys)
  keys.empty? ? obj : get_value(obj[keys[0]], keys[1..-1])
end