Repeated parameters
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
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