valbos=newByteArrayOutputStream()//内存输出流,和磁盘输出流从操作上讲是一样的 valoos=newObjectOutputStream(bos) oos.writeObject(o) oos.close() bos.toByteArray } //反序列化 defdeserialize[T](bytes:Array[Byte]):T={ valbis=newByteArrayInputStream(bytes) valois=newObjectInputStream(bis) ois....
scala>"菜鸟教程官网: ".concat("www.runoob.com");res0:String=菜鸟教程官网:www.runoob.com 同样你也可以使用加号(+)来连接: scala>"菜鸟教程官网: "+" www.runoob.com"res1:String=菜鸟教程官网:www.runoob.com 让我们看个完整实例: 实例 objectTest{ defmain(args:Array[String]){ varstr1="菜鸟教...
importArray._ objectTest{ defmain(args:Array[String]){ valmyMatrix=Array.ofDim[Int](3,3) // 创建矩阵 for(i<-0to2){ for(j<-0to2){ myMatrix(i)(j)=j; } } // 打印二维阵列 for(i<-0to2){ for(j<-0to2){ print(" "+ myMatrix(i)(j)); } println(); } } } 执行以上代...
如果我们需要声明一个长度不变的数组,可以用scala中的Array,比如: val nums = new Array[Int](10) // 声明一个容量为10个整数的数组,所有元素的初始化为0 val strs = new Array[String](10) // 声明一个容量为10个字符串的数组,所有元素的初始化为null val arr = Array("hello","world") // 声明...
objectTest{defmain(args:Array[String]) {varmyList =Array(1.9,2.9,3.4,3.5)// 输出所有数组元素for( x <- myList ) { println( x ) }// 计算数组所有元素的总会vartotal =0.0;for( i <-0to (myList.length -1)) { total += myList(i); ...
importArray._ object Test {def main(args:Array[String]) {val myMatrix =Array.ofDim[Int](3,3)// 创建矩阵for(i <-0to2) {for( j <-0to2) {myMatrix(i)(j) = j;}}// 打印二维阵列for(i <-0to2) {for( j <-0to2) {print(" "+ myMatrix(i)(j));}pr...
object Main{defmain(args:Array[String]):Unit=println("Hello, Scala developer!")} 在Scala 2中,也可以通过创建一个扩展App类的对象来定义主程序。例如: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 object MainextendsApp{println("Hello, Scala developer!")} ...
String Array[Byte] java.io.InputStream Implemented by the following libraries Requests-Scala:requests.get.stream(...)methods return aReadable OS-Lib:os.read.streamreturns aReadable Cask:cask.RequestimplementsReadableto allow streaming of request data ...
toBytesWithClass(myObj); Object deserObj = kryo.fromBytes(myObj);The KryoPool is a thread-safe way to share Kryo instances and temporary output buffers.Chill ConfigHadoop, Storm, and Akka all use a configuration that is basically equivalent to a Map[String, String]. The com.twitter.chill...
Included are steps to create the file, compile it, and execute it as an application, all inside a shell. The entry point is a “main” method defined in an object: $ cat > Date.scala object Date { def main(args: Array[String]) { println(new java.util.Date) } } $ scalac Date....