How to convert AnyObject type to Int in Swift

Question

I am searching a key in an Array of Dictionarys and I want to convert the result value into an Int value. This is what I tried.

Answer 1

If your data is decoded from JSON string, it will be decoded as NSNumber or NSString.

You can use this function:

func intValueForKey(key: String, inDictionary dictionary: [String: AnyObject]) throws -> Int {
    if let value = dictionary[key]?.integerValue {
        return value
    } else {
        throw NSError(domain: "Invalid key", code: -1, userInfo: nil)
    }
}