KissNumber is an alternative boxing for numeric variables in Scala.

What you need to know about KissNumber:

• Number is the parent type for both integer and floating point values.
• An IntegerNumber holds an integer value (it wraps a Long)
• A RealNumber holds a floating point value (it wraps a Double)
• All the operations that can be performed in a Double can be performed in a RealNumber (including the existence of an implicit RichRealNumber)
• All the operations that can be performed in a Long can be performed in a IntegerNumber (including the existence of an implicit RichIntegerNumber) except ...
  • the '/' operator performs a floating point division and ...
  • a '/%' operator is provided instead, which returns a Pair containing the integer quotient and the modulus
• All the operations that IntegerNumber and RealNumber have in common can be performed directly on a Number (including the existence of an implicit RichNumber). Hence that IntegerNumber performs floating point divisions.
• Implicit bidirectional conversions between standard Scala values (Int, Float, Double, ...) and the adequate Number types are provided

import com.bryghts.kissnumber._

object Examples extends App
{

    val n: Number = 3

    def foo(x: Number, y: Number, z: Number): Number = x + y / z

    val a: IntegerNumber = 1
    val b: RealNumber    = 2.3
    val c: Number        = 67

    val d = foo(a, b, c)

    println(d)

    val l: List[Number] = List(1, 4.5, 2, 3, -2)

    println(l.map{_ * 2}.mkString(","))

    println(l.sorted.mkString(","))

}

Maven Dependency:

<dependency>
  <groupId>com.bryghts.kissnumber</groupId>
  <artifactId>kissnumber_2.10</artifactId>
  <version>0.0.3</version>
</dependency>

Sbt Dependency:

libraryDependencies += "com.bryghts.kissnumber" % "kissnumber_2.10" % "0.0.3"