How to return a parameter when reading a vector

Question

Reading from a vector, I want to return it when I try to read an index that is beyond the scope, otherwise. Is there a standard method for doing this?

Answer 1

You can use lift :

 val v = Vector(1, 2, 3) v.lift(0) //Some(1) v.lift(5) //None 

Please note that this works for any partial function.