Kotlin-Collections-Documentation

https://kotlinlang.org/docs/reference/collections-overview.html



ArrayLists-Functions

https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-array-list/index.html



Lambda-Expressions-Documentation

https://kotlinlang.org/docs/reference/lambdas.html



Visibility-Modifiers-Documentation

https://kotlinlang.org/docs/reference/visibility-modifiers.html#visibility-modifiers



Nested-Classes-Documentation

https://kotlinlang.org/docs/reference/nested-classes.html



Null-Safty-Documentation

https://kotlinlang.org/docs/reference/null-safety.html#safe-casts



Exception-Handling-Documentation

https://kotlinlang.org/docs/reference/exceptions.html#exception-classes