Swift - Cast Int into enum:Int

Question

I am very new to Swift (got started this week) and I\'m migrating my app from Objective-C. I have basically the following code in Objective-C that works fine:

Answer 1

Swift 5

@IBAction func selectFilter(sender: AnyObject) {
    timeFilterSelected = MyTimeFilter(rawValue: sender.tag)
 }

Answer 2

elaborating on Jeffery Thomas's answer. to be safe place a guard statement unwrap the cast before using it, this will avoid crashes

   @IBAction func selectFilter(sender: AnyObject) {
     guard let filter = MyTimeFilter(rawValue: (sender as UIButton).tag) else { 
        return
    }
        timeFilterSelected = filter
     }

Answer 3

Use the rawValue initializer: it's an initializer automatically generated for enums.

self.timeFilterSelected = MyTimeFilter(rawValue: (sender as UIButton).tag)!

see: The Swift Programming Language § Enumerations

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NOTE: This answer has changed. Earlier version of Swift use the class method fromRaw() to convert raw values to enumerated values.