How to get last element of an array in scala

Question

How to get the last element from array if present. In below code num contains array of elements

 var line_ = ln.trim 
 if(!line_.isEmpty) {
     var num = line_.split(" ");
 }

Answer 1

Last will work if the Array is not empty. You might prefer lastOption:

scala> Array.empty[String].lastOption
 res5: Option[String] = None

 scala> "ab".toArray.lastOption
 res6: Option[Char] = Some(b)

Answer 2

Just use last:

 var num = line_.split(" ").last;