Scala Buffer类代码示例

//设置package包名称以及导入依赖的类
package walfie.gbf.raidfinder.client

import com.thoughtworks.binding
import com.thoughtworks.binding.Binding
import com.thoughtworks.binding.Binding._
import org.scalajs.dom
import org.scalajs.dom.raw._
import scala.collection.mutable.Buffer
import scala.scalajs.js
import walfie.gbf.raidfinder.client.ViewModel.ImageQuality
import walfie.gbf.raidfinder.protocol._

import js.Dynamic.global

package object syntax {
  implicit class HTMLElementOps[T <: HTMLElement](val elem: T) extends AnyVal {
    
    def :=(elements: TraversableOnce[T]): Buffer[T] = {
      buffer.clear()
      buffer ++= elements
    }
  }

  implicit class StringOps(val string: String) extends AnyVal {
    def addIf(condition: Boolean, s: String): String =
      if (condition) s"$string $s" else string
  }

  implicit class LanguageOps(val language: Language) extends AnyVal {
    def shortName: Option[String] = language match {
      case Language.JAPANESE => Some("JP")
      case Language.ENGLISH => Some("EN")
      case _ => None
    }
  }
} 

//设置package包名称以及导入依赖的类
package com.chapter3.ScalaFP
import scala.collection._
import scala.collection.mutable.Buffer
import scala.collection.mutable.HashMap

object CollectionExample {
  def main(args: Array[String]) {
    val x = 10
    val y = 15
    val z = 19
    
    Traversable(1, 2, 3)
    Iterable("x", "y", "z")
    Map("x" -> 10, "y" -> 13, "z" -> 17)
    Set("Red", "Green", "Blue")
    SortedSet("Hello,", "world!")
    Buffer(x, y, z)
    IndexedSeq(0.0, 1.0, 2.0)
    LinearSeq(x, y, z)
    List(2, 6, 10)
    HashMap("x" -> 20, "y" -> 19, "z" -> 16)
    
    val list = List(1, 2, 3) map (_ + 1)
    println(list)
    
    val set = Set(1, 2, 3) map (_ * 2)
    println(set)
    
    val list2 = List(x, y, z).map(x => x * 3)
    println(list2)
  }
} 

//设置package包名称以及导入依赖的类
package com.twitter.finagle.util

import org.scalatest.FunSuite
import org.scalatest.junit.JUnitRunner
import org.junit.runner.RunWith
import java.util.concurrent.CyclicBarrier
import scala.collection.mutable.Buffer
import java.util.concurrent.CountDownLatch

@RunWith(classOf[JUnitRunner])
class ChanTest extends FunSuite {
  test("Proc should admit one at a time, in the order received, queueing items") {
    val threads = Buffer[Thread]()
    val l = new CountDownLatch(1)
    val b = new CyclicBarrier(2)

    val p = Proc[Thread] { t => threads += t; l.countDown(); b.await() }

    val t0 = new Thread {
      override def run() {
        p ! this
      }
    }

    val t1 = new Thread {
      override def run() {
        l.await()
        p ! this
        b.await()
        b.await()
      }
    }

    t0.start();
    t1.start()
    t0.join();
    t1.join()

    assert(threads.toSeq == Seq(t0, t1))
  }

  test("Proc should swallow exceptions") {
    val p = Proc[Int] { _ => throw new RuntimeException }
    assert((p ! 4) ===((): Unit))
  }

} 

//设置package包名称以及导入依赖的类
package se.lu.nateko.cp.doi.gui.redux

import scala.collection.mutable.Buffer

trait Redux{

	type State
	type Action
	type Reducer = Function2[Action, State, State]

	trait StateListener{
		def notify(newState: State, oldState: State): Unit
	}

	trait Dispatcher{
		def getState: State
		def dispatch(action: ThunkAction): Unit
		def dispatch(action: Action): Unit
	}

	type ThunkAction = Function1[Dispatcher, Unit]

	class Store(reducer: Reducer, init: State) extends Dispatcher{

		private[this] val subscribers = Buffer.empty[StateListener]
		private[this] var state : State = init

		def getState: State = state

		def subscribe(listener: StateListener): Boolean = {
			if(subscribers.indexOf(listener) < 0) {
				subscribers += listener
				true
			} else false
		}

		def unsubscribe(listener: StateListener): Boolean = {
			val idx = subscribers.indexOf(listener)
			if(idx >= 0) {
				subscribers.remove(idx)
				true
			} else false
		}

		def dispatch(action: Action): Unit = schedule{
			val oldState = state
			state = reducer(action, oldState)
			subscribers.foreach(s => schedule(s.notify(state, oldState)))
		}

		def dispatch(thunk: ThunkAction): Unit = schedule(thunk(this))

		private def schedule(work: => Unit): Unit = scala.scalajs.concurrent.JSExecutionContext
			.Implicits.queue.execute(
				new Runnable{
					override def run(): Unit = work
				}
			)
	}
} 

//设置package包名称以及导入依赖的类
package se.lu.nateko.cp.doi.gui.widgets.generic

import scalatags.JsDom.all._
import scala.collection.mutable.Buffer
import org.scalajs.dom.Event
import se.lu.nateko.cp.doi.gui.views.Bootstrap

abstract class MultiEntitiesEditWidget[E, W <: EntityWidget[E]](initValues: Seq[E], cb: Seq[E] => Unit){

	protected val title: String
	protected def makeWidget(value: E, updateCb: E => Unit): W
	protected def defaultValue: E
	protected val minAmount: Int

	private val widgets = Buffer.empty[RemovableEntityWidget[E]]

	private def setRemovability(): Unit = if(minAmount > 0) {
		widgets.foreach(_.setRemovability(widgets.length > minAmount))
	}

	private def notifyUpstream(): Unit = cb(widgets.map(_.entityValue))

	private val widgetsParent = div(cls := "col-md-11").render

	private def produceWidget(value: E): Unit = {
		val widgetFactory: (E => Unit) => W = makeWidget(value, _)

		val newWidget = new RemovableEntityWidget[E](widgetFactory, value, _ => notifyUpstream(), widget => {
			widgets -= widget
			widgetsParent.removeChild(widget.element)
			setRemovability()
			notifyUpstream()
		})
		widgetsParent.appendChild(newWidget.element)
		widgets += newWidget
	}
	initValues.foreach(produceWidget)
	setRemovability()

	private val addWidget: Event => Unit = (_: Event) => {
		produceWidget(defaultValue)
		setRemovability()
		notifyUpstream()
	}

	val element = Bootstrap.basicPanel(
		div(cls := "row")(
			div(cls := "col-md-1")(
				span(strong(title)),
				raw("&nbsp;"),
				button(tpe := "button", cls := "btn btn-success", onclick := addWidget, marginBottom := 5)(
					span(cls := "glyphicon glyphicon-plus")
				)
			),
			widgetsParent
		)
	)

} 

//设置package包名称以及导入依赖的类
package mechanics

import scala.collection.mutable.Buffer

class Cell(val terrainType: Terrain.Value) {
  private val charBuffer = Buffer[Character]()
  private var buildingOption: Option[Building] = None
  private var buildingPartOption: Option[(Int, Int)] = None
  private val itemBuffer = Buffer[Item]()
  
  def add(character: Character) = {
    charBuffer += character
  }
  def add(building: Building, part: (Int, Int))= {
    buildingOption = Some(building)
    buildingPartOption = Some(part)
  }
  def add(item: Item) = {
    itemBuffer += item
  }
  
  def characters = charBuffer.toVector
  
  def building = buildingOption
  
  def buildingPart = buildingPartOption
  
  def items = itemBuffer.toVector
  
  def isEmpty = characters.isEmpty && building.isEmpty && items.isEmpty
  
}

object Cell {
  def apply() = new Cell(Terrain.PLAIN)
} 

//设置package包名称以及导入依赖的类
package dbpedia.dataparsers.ontology

import scala.collection.mutable.{ArrayBuffer, Buffer}
import dbpedia.dataparsers.DBpediaNamespace
import dbpedia.dataparsers.util.{Language, RdfNamespace}


    lazy val relatedClasses: Seq[OntologyClass] = {
      val classes = new ArrayBuffer[OntologyClass]()
      collectClasses(classes)
      classes
    }
    
    private def collectClasses(classes: Buffer[OntologyClass]): Unit = {
      // Note: If this class was already collected, we do nothing, so we silently skip cycles in 
      // class relations here. Some cycles are allowed (for example between equivalent classes, 
      // but there are other cases), others aren't. At this point, it's not easy to distinguish valid 
      // and invalid cycles, so we ignore them all. Cycles should be checked when classes are loaded.
      // Note: a set would be nicer than a buffer to check contains(), but we want to keep the order.
      if (! classes.contains(this)) {
        classes += this
        equivalentClasses.foreach(_.collectClasses(classes))
        baseClasses.foreach(_.collectClasses(classes))
      }
    } 

    override val uri = RdfNamespace.fullUri(DBpediaNamespace.ONTOLOGY, name)

    val isExternalClass = ! uri.startsWith(DBpediaNamespace.ONTOLOGY.namespace)
} 

//设置package包名称以及导入依赖的类
package com.olegych.scastie.api
package runtime

import org.scalajs.dom.raw.HTMLElement
import scala.scalajs.js

import scala.collection.mutable.Buffer

import java.util.UUID

trait DomHook {
  private val elements = Buffer.empty[HTMLElement]

  def attach(element: HTMLElement): UUID = {
    val uuid = UUID.randomUUID()
    element.setAttribute("uuid", uuid.toString)
    elements += element
    uuid
  }

  def attachedElements(): js.Array[HTMLElement] = elements.to[js.Array]
} 

//设置package包名称以及导入依赖的类
package com.twitter.finagle.util

import org.specs.SpecificationWithJUnit
import java.util.concurrent.CyclicBarrier
import scala.collection.mutable.Buffer
import java.util.concurrent.CountDownLatch

class ChanSpec extends SpecificationWithJUnit {
  "Proc" should {
    "admit one at a time, in the order received, queueing items" in {
      val threads = Buffer[Thread]()
      val l = new CountDownLatch(1)
      val b = new CyclicBarrier(2)

      val p = Proc[Thread] { t => threads += t; l.countDown(); b.await() }

      val t0 = new Thread {
        override def run() {
          p ! this
        }
      }

      val t1 = new Thread {
        override def run() {
          l.await()
          p ! this
          b.await()
          b.await()
        }
      }

      t0.start(); t1.start()
      t0.join(); t1.join()

      threads.toSeq mustEqual Seq(t0, t1)
    }
  }
} 

//设置package包名称以及导入依赖的类
package siirrot

import scala.collection.mutable.Buffer

case class Suunta(kohde: Koordinaatti) extends Siirto(Koordinaatti(0,0), kohde) {
  
  def muutaSiirroksi(lahto: Koordinaatti) = new Siirto(lahto, lahto+this.kohde)
  
  override def toString() = this.kohde.toString()
}

object Suunta {
  
  //Luo Suunnan, joka on tiettyä vaihdetta ja mahdollisimman lähellä annettua kulmaa
  def apply(vaihde: Int, kulma: Double): Suunta = {
    val vaihtoehdot = suunnatVaihteella(vaihde)
    Suunta(kulma, vaihtoehdot)
  }
  
  //Valitsee annetuista Suunnista sen, joka on lähimpänä annettua kulmaa
  def apply(kulma: Double, vaihtoehdot: Vector[Suunta]): Suunta = {
    if (vaihtoehdot.length > 0) {
      vaihtoehdot.reduce{(suunta1, suunta2) =>
        if (Math.abs(suunta1.kulma - kulma) <= Math.abs(suunta2.kulma - kulma)) suunta1
        else suunta2
      }
    } else {
      Suunta(Koordinaatti(0,0)) //Virhelliseen syötteeseen vastataan 0-suunnalla
    }
  }
  
  //Listaa kaikki mahdolliset suunnaat, joihin tietyllä vaihteella pääsee.
  def suunnatVaihteella(vaihde: Int): Vector[Suunta] = {
    val suunnat = Buffer[Suunta]()
    for (i <- -vaihde to vaihde; j <- -vaihde to vaihde) { //Pisin edettävä suunta on vaihteen arvo
      if ( Math.max( Math.abs(i), Math.abs(j) ) == vaihde ) suunnat.append(Suunta(Koordinaatti(i,j)))
    }
    suunnat.toVector
  }

} 

//设置package包名称以及导入依赖的类
package ch.loewenfels.jira.plugin.synchronisation

import java.util.Date
import scala.collection.JavaConverters.asScalaBufferConverter
import scala.collection.mutable.Buffer
import org.slf4j.LoggerFactory
import com.atlassian.jira.issue.CustomFieldManager
import com.atlassian.jira.issue.fields.CustomField
import com.atlassian.jira.issue.fields.config.FieldConfig
import com.atlassian.sal.api.lifecycle.LifecycleAware
import com.atlassian.sal.api.scheduling.PluginScheduler
import ch.loewenfels.jira.plugin.config.VertecConfig
import ch.loewenfels.jira.plugin.customfields.CustomFieldProvider

class BackgroundTaskSchedulerImpl(pluginScheduler: PluginScheduler, config: VertecConfig, customFieldProvider: CustomFieldProvider, syncService: SyncService) extends LifecycleAware with BackgroundTaskScheduler {
  val logger = LoggerFactory.getLogger(classOf[BackgroundTaskSchedulerImpl])
  val name = classOf[BackgroundTaskSchedulerImpl].getName.concat(":job")

  def onStart(): Unit = {
    logger.trace("Starting SyncServiceMonitor")
    reschedule(config.syncIntervalInMs.getOrElse("3600000").toLong)
  }

  def reschedule(interval: Long): Unit = {
    var map = new java.util.HashMap[String, Object]()
    map.put(BackgroundTaskConfig.SERVICE, syncService)
    map.put(BackgroundTaskConfig.FIELD_CONFIG, collectFieldConfigs)
    pluginScheduler.scheduleJob(name, classOf[BackgroundTask], map, new Date(), interval)
    logger.info("Synchronisation task scheduled to run every {}ms", interval)
  }

  private def collectFieldConfigs: Seq[FieldConfig] = {
    for {
      customField <- customFieldProvider.filter(CustomFieldProvider.VertecKey)
      scheme <- customField.getConfigurationSchemes.asScala
    } yield {
      scheme.getOneAndOnlyConfig
    }
  }

} 

//设置package包名称以及导入依赖的类
package anorm

import scala.collection.mutable.Buffer
import java.sql.Connection
import org.slf4j.LoggerFactory

object AnormUtil {
  
  private val logger = LoggerFactory.getLogger("uk.ac.ncl.openlab.intake24.AnormUtil")

  def escapeLike(s: String) = s.replace("\\", "\\\\").replace("_", "\\_").replace("%", "\\%")

  def isNull(row: Row, columnName: String): Boolean = row.get(columnName).get._1 == null

  @deprecated("Create a pull request for anorm instead...")
  def batchKeys(sql: BatchSql)(implicit conn: Connection): Seq[Long] = {
    
    val stmt = sql.getFilledStatement(conn, true)
    val result = stmt.executeBatch()

    val keys = stmt.getGeneratedKeys()

    try {
      if (result.exists(_ != 1))
        throw new RuntimeException("Failed batch update")

      val buf = Buffer[Long]()

      while (keys.next()) {
        buf += keys.getLong("id")
      }

      buf
    } catch {
      case e: Throwable => throw e
    } finally {
      keys.close()
      stmt.close()
    }
  }
} 

//设置package包名称以及导入依赖的类
package jp.kenichi.lrcon
package server

import java.io.{File, FileInputStream, InputStreamReader, BufferedReader}
import java.nio.file.{Path, Paths}
import scala.collection.mutable.Buffer

import loader.ChildFirstClassLoader


object Boot extends App {
	val serverClasspath = Buffer[Path]()
	val serverArgs = Buffer[String]()

	def parseArgs(args: List[String]): Unit = args match {
		case "-serverClasspath" :: arg :: rest =>
			serverClasspath ++= arg.split(File.pathSeparator).map(Paths.get(_))
			parseArgs(rest)

		// parameter file (non-empty lines become arguments)
		case arg :: rest if (arg.startsWith("@")) =>
			val in = new BufferedReader(new InputStreamReader(new FileInputStream(arg.drop(1)), "UTF-8"))
			val fileArgs = Buffer[String]()
			try {
				Iterator.continually(in.readLine).takeWhile(_ != null).map(_.trim).filter(_.nonEmpty).foreach { line =>
					if (!line.startsWith("#"))
						fileArgs += line
				}
			} finally {
				in.close
			}
			parseArgs(fileArgs.toList ++ rest)

		case arg :: rest =>
			serverArgs += arg
			parseArgs(rest)

		case Nil =>
	}
	parseArgs(args.toList)

	if (serverClasspath.isEmpty) {
		// TODO: complement
		System.err.println("specify -serverClasspath")
		System.exit(255)
	}

//	println("systemClassLoader = " + ClassLoader.getSystemClassLoader)
//	println("contextClassLoader = " + Thread.currentThread.getContextClassLoader)

	ChildFirstClassLoader.toplevelClassLoader = ClassLoader.getSystemClassLoader // same as Thread.currentThread.getContextClassLoader when launched by java command
	val serverClassLoader = new ChildFirstClassLoader(serverClasspath, ClassLoader.getSystemClassLoader, Some("server"))
	val serverCls = serverClassLoader.loadClass(getClass.getPackage.getName + ".Server")
	Thread.currentThread.setContextClassLoader(serverClassLoader)
	serverCls.getMethod("main", classOf[Array[String]]).invoke(null, serverArgs.toArray)
}