JSON::OnSteroids::MergeOperations

return a JSON object containing only the JSON fields requested in the argument enumerable

  json = JSON.parse(%<{"a": 1, "b": 2, "c": [1,2,3]}>).on_steroid
  json = json % {"a", "b"} # => {"a": 1, "b": 2}

return a JSON object removing the JSON fields defined by the argument enumerable

  json = JSON.parse(%<{"user": "yacine", "password": "helloworld"}>).on_steroid
  json = json - {:password} # => {"a": 1, "b": 2}