scala> def f(s: String) =  s.toInt; def f(s: String, b: Int) = s.toInt
f: (s: String,b: Int)Int <and> (s: String)Int
f: (s: String,b: Int)Int <and> (s: String)Int

scala> Array("32", "25") map f
res1: Array[Int] = Array(32, 25)