Scala quiz. What is a correct signature of a function with var | CodeGalaxy.io

What is a correct signature of a function with variable length argument list?

Explanation

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Scala allows you to indicate that the last parameter to a function may be repeated. This allows clients to pass variable length argument lists to the function. To denote a repeated parameter, place an asterisk after the type of the parameter. For example:
```
  scala> def echo(args: String*) = 
           for (arg <- args) println(arg)
  echo: (String*)Unit
```
Defined this way, echo can be called with zero to many String arguments:
```
  scala> echo()
  
  scala> echo("one")
  one
  
  scala> echo("hello", "world!")
  hello
  world!
```
Read more: Repeated parameters

functions

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