appwrite/docs/examples/0.12.x/server-swift/examples/database/create-boolean-attribute.md

import Appwrite

func main() {
    let client = Client()
      .setEndpoint("https://[HOSTNAME_OR_IP]/v1") // Your API Endpoint
      .setProject("5df5acd0d48c2") // Your project ID
      .setKey("919c2d18fb5d4...a2ae413da83346ad2") // Your secret API key

    let database = Database(client)
    database.createBooleanAttribute(
        collectionId: "[COLLECTION_ID]",
        key: "",
        required: xfalse
    ) { result in
        switch result {
        case .failure(let error):
            print(error.message)
        case .success(let attributeBoolean):
            print(String(describing: attributeBoolean)
        }
    }
}