How to check if an element is in an array

Question

In Swift, how can I check if an element exists in an array? Xcode does not have any suggestions for contain, include, or has, and a qu

Answer 1

Swift 4.2 +
You can easily verify your instance is an array or not by the following function.

func verifyIsObjectOfAnArray(_ object: T) -> Bool {
   if let _ = object as? [T] {
      return true
   }

   return false
}

Even you can access it as follows. You will receive nil if the object wouldn't be an array.

func verifyIsObjectOfAnArray(_ object: T) -> [T]? {
   if let array = object as? [T] {
      return array
   }

   return nil
}