Return only value without function name in Scala

Question

I am new to Scala. I am trying to return a value from some scala code in Spark and I also get the function name along with the result. for ex executing below

def getHistory() : Long = {
    1 + 1
}
getHistory()

returns

getHistory: ()Long
res140: Long = 2

The additional information that is being returned seems to be a function of REPL as someone mentioned below. How can I turn this feature off so that I only see 2 being returned.

Answer 1

If you don't want to see REPL text you can set it to :silent but then you won't see anything that isn't sent to STDOUT.

Here's a sample session:

%> scala  #start the REPL
Welcome to Scala 2.13.5 (OpenJDK 64-Bit Server VM, Java 11.0.11).
Type in expressions for evaluation. Or try :help.

scala> :silent

scala> def two() = 1 + 1

scala> two()

scala> print(two())
2
scala> 

Answer 2

As the first comment on your post suggest, "the additional stuff" that you obtain is just the verbosity of the REPL.

You function indeed only return the value 2.

https://docs.scala-lang.org/overviews/repl/overview.html

Answer 3

The REPL cannot be configured in the exact way that you want. (Why do you even want to configure it that way? What is your motive? The question is puzzling.)

Regardless, you can use println to produce "bare" output:

scala> println(getHistory())
2