createArray方法(或属性)属于scala.compat.Platform对象(object),其相关用法说明如下。 @inline@deprecated(“使用 `java.lang.reflect.Array#newInstance` 代替。”,因为 = "2.13.0") 用法: defcreateArray(elemClass:Class[_], length:Int):AnyRef 创建指定类型和给定长度的新数组。
Scala Programming Array Exercise-11 with Solution Write a Scala program to create a new array taking the middle element from three arrays of length 5. Sample Solution: Scala Code: objectScala_Array{deftest(x:Array[Int],y:Array[Int],z:Array[Int]):Array[Int]={if(x.length!=5||y.length!
Array 1. Introduction In this article, we’ll explore different ways to create an empty array in Scala. As with most programming languages, Scala provides us with a couple of different ways to create an empty array and we generally pick the one that is most suitable for our use case. 2...
// Scala program to create an array using "new" keyword object Sample { def main(args: Array[String]) { //Create an array with 5 integer elements var MyArr = new Array[Int](5) var count:Int=0 println("Enter array elements:") while(count<5) { printf("Eelemnt[%d]: ",count); ...
The source code to create an array of strings is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.// Scala program to create a string array object Sample { def main(args: Array[String]) { var StrArr = Array("india", "australia",...
importscala.util.Using objectMongoClientConnectionExample{ defmain(args:Array[String]):Unit= { //Replace the placeholderwithyour Atlas connectionstring valconnectionString ="<connection string>" // Construct a ServerApiinstance using theServerApi.builder() method ...
Scala Code: objectScala_String{deftest(stng:String):String={vall=stng.length;varnewstring="";for(i<-0tol-1){newstring+=stng.substring(i,i+1)+stng.substring(i,i+1);}newstring;}defmain(args:Array[String]):Unit={valstr1="welcome";println("The given string is: "+str1);println("Th...
In driver v2.1.0, new helpers were added so that None values would not be stored in the database. In the following example, the driver only stores an address if if one is present: import org.mongodb.scala.bson.codecs.Macros case class Person(firstName: String, secondName: String, ...
Scala Copy import org.apache.spark.SparkConf import org.apache.spark.SparkContext object MyClusterApp{ def main (arg: Array[String]): Unit = { val conf = new SparkConf().setAppName("MyClusterApp") val sc = new SparkContext(conf) val rdd = sc.textFile("wasbs:///HdiSamples/HdiSample...
You’ve seen thatScalacode looks cleaner when you don’t always have to use thenewkeyword to create a new instance of a class, like this: val a = Array( Person("John"), Person("Paul") ) So you want to know how to write your code to make your classes work like this. ...