String to Date in Swift 2, swift 3 and swift 5

How can I convert a string to Date in Swift 2, swift 3 and swift 5?

I am going to convert a string to Date in Swift 2, swift 3 and swift5. Can you please help me?

>Solution :

// Swift 3.0
private func stringToDate(dateString: String?) -> Date? {
    if let str = dateString {
        let formatter = DateFormatter()
        formatter.dateFormat = "MMM dd, yyyy h:mm a"
        formatter.amSymbol = "AM"
        formatter.pmSymbol = "PM"
        return formatter.date(from: str)
    } else {
        return nil
    }
}


// Swift 2
private func stringToDate(dateString: String?) -> NSDate? {
    if let str = dateString {
        let formatter = NSDateFormatter()
        formatter.dateFormat = "MMM dd, yyyy h:mm a"
        formatter.AMSymbol = "AM"
        formatter.PMSymbol = "PM"
        return formatter.dateFromString(str)
    } else {
        return nil
    }
}