instanceOf method allows you to check if an object belongs to a particular type. However, this method should be used with caution. Passing in an invalid type parameter may cause the method to produce unreliable results, especially if performing a fruitless type test.
// Evaluates to true. List("a", "b", "c").isInstanceOf[List[Int]]
List[String] is not the same as
isInstanceOf still returns
true due to the compiler erasing information about generic types of
List such as
String in this case. Therefore, it is recommended that you resort to
match statements when and where possible and rely on
.isInstanceOf only when you're absolutely sure what you're doing.
Note: This rule exists for compatibility reasons for users coming from other 3rd party Scala static analysis tools.