./curric/kotlin/basics/Type-Hierarchy/

Kotlin Type Hierarchy

Every Type in Kotlin has 2 forms: A non-nullable form and a nullable form (denoted with a ?) However This means that if a parameter is created as an instance of Int, you are still able to pass in an Int? as Int? is a “super” type of Int. Therefore all Nullable Types are a super type of the Non-Nullable Type