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• Double.scala

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monocle.std.Double.scala Maven / Gradle / Ivy

package monocle.std

import monocle.Prism

object double extends DoubleOptics

trait DoubleOptics {

  val doubleToInt: Prism[Double, Int] =
    Prism[Double, Int](d => if(d.isValidInt) Some(d.toInt) else None)(_.toDouble)

  val doubleToFloat: Prism[Double, Float] =
    Prism[Double, Float]{d => val f = d.toFloat; if (f.toDouble == d) Some(f) else None}(_.toDouble)

}