Scala elidable类代码示例

//设置package包名称以及导入依赖的类
package me.mmcoulombe.aad

import scala.annotation.elidable
import scala.annotation.elidable._
import scala.scalajs.js.Date


object SimpleLogger {
  @elidable(FINEST)
  def trace(msg: String): Unit =
    println(s"TRACE [${new Date()}: $msg")

  @elidable(FINE)
  def debug(msg: String): Unit =
    println(s"DEBUG [${new Date()}: $msg")

  @elidable(INFO)
  def info(msg: String): Unit =
    println(s"INFO [${new Date()}: $msg")
} 

//设置package包名称以及导入依赖的类
package de.sciss.imperfect

import java.awt.image.BufferedImage
import java.text.SimpleDateFormat
import java.util.{Date, Locale}

import scala.annotation.elidable
import scala.annotation.elidable.CONFIG

package object mesh {
  var showLog = true

  private[this] val logHeader = new SimpleDateFormat("[d MMM yyyy, HH:mm''ss.SSS] 'imperfect' - ", Locale.US)

  final val NominalWidth  = 1920
  final val NominalHeight = 1080
  final val VisibleWidth  = 3840
  final val VisibleHeight =  540
  final val OffScreenImg  = new BufferedImage(VisibleWidth, VisibleHeight, BufferedImage.TYPE_BYTE_GRAY)
  final val OffScreenG    = OffScreenImg.createGraphics()

  @elidable(CONFIG) def log(what: => String): Unit =
    if (showLog) Console.out.println(s"${logHeader.format(new Date())}$what")

  def warn(s: String): Unit =
    Console.err.println(s"Warning: $s")
} 

//设置package包名称以及导入依赖的类
package de.sciss.imperfect

import java.awt.Color
import java.awt.image.BufferedImage
import java.text.SimpleDateFormat
import java.util.{Date, Locale}

import scala.annotation.elidable
import scala.annotation.elidable.CONFIG

package object hough {
  var showLog = true

  private[this] val logHeader = new SimpleDateFormat("[d MMM yyyy, HH:mm''ss.SSS] 'imperfect' - ", Locale.US)

  final val NominalWidth  = 1920
  final val NominalHeight = 1080
  final val VisibleWidth  = 3840
  final val VisibleHeight =  540
//  final val OffScreenImg  = new BufferedImage(VisibleWidth, VisibleHeight, BufferedImage.TYPE_BYTE_GRAY)
  final val OffScreenImg  = new BufferedImage(VisibleWidth, VisibleHeight, BufferedImage.TYPE_INT_ARGB)
  final val OffScreenG    = {
    val res = OffScreenImg.createGraphics()
    res.setColor(Color.black)
    res.fillRect(0, 0, VisibleWidth, VisibleHeight)
    res
  }

  @elidable(CONFIG) def log(what: => String): Unit =
    if (showLog) Console.out.println(s"${logHeader.format(new Date())}$what")

  def warn(s: String): Unit =
    Console.err.println(s"Warning: $s")
} 

//设置package包名称以及导入依赖的类
package swim.app

import scala.annotation.elidable
import scala.annotation.elidable.ASSERTION

import fuel.func.RunExperiment
import fuel.util.IApp
import swim.Grammar
import swim.Tests
import swim.tree.ConstantProviderUniformI
import swim.tree.GPMoves
import swim.tree.Op
import swim.tree.SimpleGP
import fuel.util.Options
import fuel.util.Rng
import fuel.util.CollectorStdout
import fuel.func.BestSoFar
import fuel.core.StatePop
import fuel.util.Collector


object Common {
  def getPassedTestsRatio(bsf: BestSoFar[Op, Int], totalTests: Int)(s: StatePop[(Op, Int)])(implicit coll: Collector) = {
    // Computes ratio of passed tests for a best of run.
    val (op, e) = bsf.bestSoFar.get
    val ratio = if (e <= 0) 1.0 else (totalTests - e).toDouble / totalTests.toDouble
    coll.setResult("best.passedTestsRatio", ratio)
    s
  }
}


object BooleanProblemFromCSV extends App {
  val defaultOpts = Options('maxGenerations -> 20, 'populationSize -> 100, 'csvFile -> "booleanEx1.csv", 'parEval -> false )
  implicit val opt = if (this.args.size == 0) defaultOpts else Options(this.args)
  implicit val rng = Rng(opt)
  implicit val coll = CollectorStdout(opt)
  
  val fname = opt.getOption("csvFile").get
  val tests = Tests.fromCSVfile[Double](fname, Tests.str2double)
  assume(tests.nonEmpty)

  val numVars = tests(0).input.size
  println("Number of input variables: " + numVars)
  
  // instruction set:
  val instrSet = FloatingPointDomain.instructionSet(opt.paramString("instructions", "default")) +
    (0 -> List(ConstantProviderUniformI(0, numVars - 1))) // input variables
  val grammar = Grammar.fromSingleTypeInstructions(instrSet)

  val domain = FloatingPointDomain(numVars)
  // fitness function:
  def eval(s: Op) = tests.count(t => domain(s)(t._1) != t._2)

  val gp = new SimpleGP(GPMoves(grammar, SimpleGP.defaultFeasible), eval, SimpleGP.correctDiscrete) {
    override def epilogue = super.epilogue andThen Common.getPassedTestsRatio(bsf, tests.size)
  }
  // launch the GP run
  RunExperiment(gp)
} 

//设置package包名称以及导入依赖的类
package forimpatient.chapter15

import scala.annotation.elidable
import scala.annotation.elidable.CONFIG
import scala.annotation.meta.{beanGetter, beanSetter}
import scala.beans.BeanProperty


object Exercise03 extends App {
  println("Chapter 15 Exercise 03")

  val annotated = new BeanAnnotated
  annotated.setB("Hello")
  println(annotated.b)
  println(annotated.getB)
  annotated.setA(3)
  println(annotated.getA)

  class BeanAnnotated {
    @(deprecated @beanSetter)("Use scala setter instead", "1.1") @BeanProperty var a: Int = 0
    @(elidable @beanGetter)(CONFIG) @BeanProperty var b: String = ""
  }
}