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class Meter(val underlying: Double) extends AnyVal with Printable {
def + (other: Meter): Meter =
new Meter(this.underlying + other.underlying)
def / (other: Meter): Double = this.underlying / other.underlying
def / (factor: Double): Meter = new Meter(this.underlying / factor)
def < (other: Meter): Boolean = this.underlying < other.underlying
override def toString: String = underlying.toString+"m"
}
trait Printable extends Any { def print: Unit = Console.print(this) }
object Test extends App {
{
val x: Meter = new Meter(1)
val a: Object = x.asInstanceOf[Object]
val y: Meter = a.asInstanceOf[Meter]
val u: Double = 1
val b: Object = u.asInstanceOf[Object]
val v: Double = b.asInstanceOf[Double]
}
val x = new Meter(1)
val y = x
println((x + x) / x)
println((x + x) / 0.5)
println((x < x).toString)
println("x.hashCode: "+x.hashCode)
println("x == 1: "+(x == 1))
println("x == y: "+(x == y))
assert(x.hashCode == (1.0).hashCode)
val a: Any = x
val b: Any = y
println("a == b: "+(a == b))
}
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