Convert Realm list of Strings to Array of Strings in Swift

user_4513125 0
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I'm just starting up with RealmSwift, and I'm trying to store an array of Strings in Realm. It doesn't work, so now I'm using List<String>() as an alternative. However, how do I convert these Realm Lists back to [String] again? And if I can't do that, are there any alternatives?

Thanks

realm swift xcode
3 Answers

However, how do I convert these Realm Lists back to [String] again

You can simply cast List to Array, because List has Sequence Support:

let list = List<String>()
let array = Array(list)
user_24636160

Bear in mind that by converting to an array you'll lose the 'dynamic' quality of a Realm collection (i.e. you'll receive a static array, whereas keeping the original List will provide automatic updating should the source change). But you can create an array by using an extension, e.g.:-

extension RealmCollection
{
  func toArray<T>() ->[T]
  {
    return self.compactMap{$0 as? T}
  }
}

Then use:-

let stringList = object.strings.toArray()

Where object is the realm object, and strings is your field.

user_89034970

Here are the details. how to assign an array in the realm list model.

jim.dogs.append(objectsIn: someDogs)
user_119073190
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