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object Test {
def compare(first: Any, second: Any): Any = {
(first, second) match {
case (k: Int, o: Int) => k compare o
//why the next case matches (Float, Int) but does not match (Int, Float) ???
case (k: Number, o: Number) => k.doubleValue() compare o.doubleValue()
case _ => "BOGON"
// throw new Exception("Unsupported compare " + first + "; " + second)
}
}
def main(args: Array[String]): Unit = {
println("Both Int", -1, compare(0, 1))
println("Both Float", 1, compare(1.0, 0.0))
println("Float then Int", 0, compare(10.0, 10))
println("Int then Float", 0, compare(10, 10.0)) //this fails with an exception
}
}
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