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• UnitOfMeasurement.scala

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axle.quanta.UnitOfMeasurement.scala Maven / Gradle / Ivy

package axle.quanta

import spire.algebra.Eq
import spire.algebra.Field
import spire.implicits._

object UnitOfMeasurement {

  implicit def eqqqn[Q <: Quantum, N: Field: Eq]: Eq[UnitOfMeasurement[Q, N]] = new Eq[UnitOfMeasurement[Q, N]] {
    def eqv(x: UnitOfMeasurement[Q, N], y: UnitOfMeasurement[Q, N]): Boolean = x.name === y.name
  }

}

case class UnitOfMeasurement[Q <: Quantum, N: Field: Eq](name: String, symbol: String, wikipediaUrl: Option[String])
//extends Quantity[Q, N]
{

  def magnitude: N = implicitly[Field[N]].one

  def unit: UnitOfMeasurement[Q, N] = this

  def *:(n: N) = UnittedQuantity(n, this)
}