(Swift 3,4,5...) JSON: Array of Objects

Here we have a JSON object that contains an array, where each element in the array is a JSON object. This example demonstrates how to access the objects contained within an array.

{ 
  "employees":[
    {"firstName":"John", "lastName":"Doe"},
    {"firstName":"Anna", "lastName":"Smith"},
    {"firstName":"Peter","lastName":"Jones"}
  ]
}

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func chilkatTest() {
    let json = CkoJsonObject()!

    // This is the above JSON with whitespace chars removed (SPACE, TAB, CR, and LF chars).
    // The presence of whitespace chars for pretty-printing makes no difference to the Load
    // method. 
    var jsonStr: String? = "{\"employees\":[{\"firstName\":\"John\", \"lastName\":\"Doe\"},{\"firstName\":\"Anna\", \"lastName\":\"Smith\"},{\"firstName\":\"Peter\",\"lastName\":\"Jones\"}]}"

    var success: Bool = json.load(jsonStr)
    if success != true {
        print("\(json.lastErrorText!)")
        return
    }

    // Get the "employees" array.
    var employees: CkoJsonArray? = json.array(of: "employees")
    if json.lastMethodSuccess == false {
        print("employees member not found.")
        return
    }

    // Iterate over each employee, getting the JSON object at each index.
    var numEmployees: Int = employees!.size.intValue
    var i: Int = 0
    while i < numEmployees {

        var empObj: CkoJsonObject? = employees!.object(at: i)

        print("employee[\(i)] = \(empObj!.string(of: "firstName")!) \(empObj!.string(of: "lastName")!)")
        empObj = nil

        i = i + 1
    }

    employees = nil

}