How to convert a string to an int
If you have an integer hiding inside a string, you can convert between the two just by using the integer's constructor, like this:
let myString1 = "556"
let myInt1 = Int(myString1)As with other data types (Float and Double) you can also convert by using NSString:
let myString2 = "556"
let myInt2 = (myString2 as NSString).integerValueAvailable from iOS 7.0
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