Kotlin Null Safety Nullable and Non-Nullable types
Example
Normal types, like String, are not nullable. To make them able to hold null values, you have to explicitly denote that by putting a ? behind them: String?
var string : String = "Hello World!" var nullableString: String? = null string = nullableString // Compiler error: Can't assign nullable to non-nullable type. nullableString = string // This will work however!
