Swift: Pyramid of Doom

pyramid_of_doom.swift

/* Example JSON Object

  {
    "key": {
      "nestedKey": {
        "nestedKey": {
          "nestedKey": 42.0
        }
      }
    }
  } 

*/

let jsonObject = someFunctionWhichReturnsJSON()

if let dict1 = jsonObject as? [String: Any] {
  if let dict2 = dict1["key"] as? [String: Any] {
    if let dict3 = dict2["nestedKey"] as? [String: Any] {
      if let dict4 = dict3["nestedKey"] as? [String: Any] {
        if let number = dict4["nestedKey"] as? Double {
          // Finally we can use the number
        }
      }
    }
  }
}