Swift Optional Value in variable

I have some variables all coming true just tarih1 output shows Optional(2016). I didn't resolve it. I want to fix it to 2016.

My code below.

if let myString: String = String(seans.SeanceDate) {
    let myStringArrf = myString.componentsSeparatedByString("T")
    let tarih: NSString =  myStringArrf[0]
    let saat: String =  String(myStringArrf[1])
    let myStringArrf2 = saat.componentsSeparatedByString(":")
    let saat1: String = myStringArrf2[0]
    let saat2: String = myStringArrf2[1]

    cell.saat.text = "\(saat1):\(saat2)"
    cell.saat2.text = "\(saat1):\(saat2)"

    let myStringArrf23 = tarih.componentsSeparatedByString("-")
    let tarih1: NSString = myStringArrf23[0]
    let tarih2: NSString = myStringArrf23[1]
    let tarih3: NSString = myStringArrf23[2]

    let sontarih: String = ("\(tarih3)-\(tarih2)-\(tarih1)")
    cell.tarih.text = sontarih

    print(sontarih)
}

You use optional binding to find out whether an optional contains a value, and if so, to make that value available as a temporary constant or variable. Optional binding can be used with if and while statements to check for a value inside an optional, and to extract that value into a constant or variable, as part of a single action

if let constantName = someOptional {
    // statements
}

if let tarih1 = myStringArrf23[0]{
    print(tarih1)
}