How to convert a var to Int in Scala?

Question

Is there a method to convert a var to Int in Scala?

Suppose I have:

var noOfConcurrentUsers =  sys.env.get("NumberOfConcurrentUsers");

// I need the following
var userNo = noOfConcurrentUsers //some method

I am getting the variable as an environment variable in String format from Jenkins.

Getting error:

 Cannot resolve symbol toInt

Possible duplicate of [Scala: convert string to Int or None](http://stackoverflow.com/questions/23811425/scala-convert-string-to-int-or-none) — Dima, Dec 03 '16 at 00:04
@PritamBanerjee the reason for downvote is your failure to figure out the type of your variable before rushing to SO with your question. Also, it is a dupe. — Dima, Dec 03 '16 at 14:57

Pavel · Accepted Answer · 2016-12-03T00:11:59.740

3

Not sure if I understand correct, but if this conversion from Str to Int then:

var noOfConcurrentUsers = "10";

val i : Int = noOfConcurrentUsers.toInt

EDIT

What worked for me was:

var noOfConcurrentUsers =  sys.env.get("NumberOfConcurrentUsers"); 
var noOfUsers = noOfConcurrentUsers.toString().toInt

Let it be a final nail:)

edited Dec 03 '16 at 00:11

answered Dec 02 '16 at 22:57

Pavel

Actually I got the variable from Jenkins and had to convert it to String first. You have got the right answer. Marked it as accepted. – Pritam Banerjee Dec 02 '16 at 23:47
2

Correct way would be to use `Try(variable.toInt)`. – Reactormonk Dec 02 '16 at 23:54
Yes, that a good point, are you sure you always will get string convertible to int? – Pavel Dec 02 '16 at 23:55
@Reactormonk Yeah, I agree, will be a safer way to go. Still new to Scala, trying to get my head around it. – Pritam Banerjee Dec 02 '16 at 23:57
@Pavel Yes, getting the variable as String and asking the user to enter only number. – Pritam Banerjee Dec 02 '16 at 23:58

1 Answers1