#dig lets you easily traverse nested hashes, arrays, or even a mix of them. It returns nil if any intermediate value is missing.

x = {
  foo: {
    bar: [ 'a', { baz: 'x' } ]
  }
}

x.dig(:foo, :bar) # => [ 'a', { baz: 'x' } ]
x.dig(:foo, :bar, 1, :baz) # => "x"
x.dig(:foo, :wronk, 1, :baz) # => nil

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