How to cast (Any)? to Int

Question

I am trying to cast a (Any)? value to a Integer. I am retrieving information from Firebase and I want to add the number by something else. That is why the (Any)? value needs to be a Integer. I have this:

let snapshotValues = snapshot.value as? NSDictionary
let gamesWon = snapshotValues!.value(forKey: "GamesWon")
let gamesLost = snapshotValues!.value(forKey: "GamesLost")
let totalgamesPlayedByUser = gamesWon + gamesLost

This is giving me an error that two Any? objects can not be added together. I already tried the Int(gamesWon), gamesWon as! Int, but that did not work. How to cast this as a Integer?

Possible duplicate of [Cast Option\[Any\] to int](http://stackoverflow.com/questions/11716081/cast-optionany-to-int) — Mostafa Sultan, Feb 26 '17 at 13:12

Sergey Kalinichenko · Answer 1 · 2017-02-26T13:13:46.770

5

If you know that both keys contain Ints, you should be able to write

let gamesWon = snapshotValues!.value(forKey: "GamesWon") as! Int
let gamesLost = snapshotValues!.value(forKey: "GamesLost") as! Int

making gamesWon + gamesLost a valid Int expression.

If you are not sure if the keys are there or not, use if let statements instead:

if let gamesWon = snapshotValues!.value(forKey: "GamesWon") as? Int {
    if let gamesLost = snapshotValues!.value(forKey: "GamesLost") as? Int {
        let totalgamesPlayedByUser = gamesWon + gamesLost
    }
}

edited Feb 26 '17 at 13:13

answered Feb 26 '17 at 13:07

Sergey Kalinichenko

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change the answer to use if let statements, so the app doesn't crash – José Neto Feb 26 '17 at 13:09
1

From Swift 1.2 on, You can use a single `let` statement: `if let gamesWon=..., let gamesLost=... {...}`. – Ted Hopp Feb 26 '17 at 13:35

score -1 · Answer 2 · answered Apr 13 '22 at 13:06

-1

Alternatively:

var gamesWon  : Any = 1
var gamesLost : Any = 2
var totalGamesPlayedByUser : Int

if gamesWon is Int && gamesLost is Int {
   totalGamesPlayedByUser = gamesWon as! Int + gamesLost as! Int
}

answered Apr 13 '22 at 13:06

clearlight

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How to cast (Any)? to Int

2 Answers2