(Swift 2) StringBuilder SetNth

Demonstrates the SetNth method.

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func chilkatTest() {
    // The SetNth method is handy for setting a part of a delimited string.
    // For example:

    let sb = CkoStringBuilder()
    sb.Append("red,blue,\"green,purple\",,yellow")

    var delimiterChar: String? = ","
    var exceptDoubleQuoted: Bool = true
    var exceptEscaped: Bool = true

    sb.SetNth(2, value: "magenta", delimiterChar: delimiterChar, exceptDoubleQuoted: exceptDoubleQuoted, exceptEscaped: exceptEscaped)
    // Prints "red,blue,magenta,,yellow"
    print("\(sb.GetAsString())")

    sb.SetNth(3, value: "orange", delimiterChar: delimiterChar, exceptDoubleQuoted: exceptDoubleQuoted, exceptEscaped: exceptEscaped)
    // Prints "red,blue,magenta,orange,yellow"
    print("\(sb.GetAsString())")

    // What happens if we start with an empty string?
    sb.Clear()

    sb.SetNth(2, value: "apple", delimiterChar: delimiterChar, exceptDoubleQuoted: exceptDoubleQuoted, exceptEscaped: exceptEscaped)
    // Prints ",,apple"
    print("\(sb.GetAsString())")

    sb.SetNth(0, value: "orange", delimiterChar: delimiterChar, exceptDoubleQuoted: exceptDoubleQuoted, exceptEscaped: exceptEscaped)
    // Prints "orange,,apple"
    print("\(sb.GetAsString())")

    sb.SetNth(1, value: "banana", delimiterChar: delimiterChar, exceptDoubleQuoted: exceptDoubleQuoted, exceptEscaped: exceptEscaped)
    // Prints "orange,banana,apple"
    print("\(sb.GetAsString())")

}