Sometimes we only need the object to modify some of the member data or to perform a small action. Java was doing this using anonymous inner classes. Kotlin has slightly modified and generalized the approach, and came up with object expressions.
Let's have a look at the following code:
CognitoUser?.getDetailsInBackground(object : GetDetailsHandler { override fun onSuccess(details: CognitoUserDetails) { // Successfully retrieved user details } override fun onFailure(exception: Exception) { // Failed to retrieve the user details, probe exception for the cause }})
GetDetailsHandler is an anonymous class used as an object expression.
Keep in mind that anonymous objects can be used as types only in local and ...
