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(" ");
 }

BeniBela · Accepted Answer · 2013-10-25 08:47:35Z

58

Just use last:

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

answered Oct 25, 2013 at 8:47

BeniBela

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2 Comments

How about val num = ln.trim.split(" ").last. Do you really like to read few lines instead of one?

@pawel.panasewicz: like Mark said, that will not work if the line is empty. Good thing the isEmpty check was already there...

Mark Lister · Accepted Answer · 2013-10-25 10:51:34Z

17

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)

answered Oct 25, 2013 at 10:51

Mark Lister

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