scala and akka

1. Download1.1Scala DownloadsWindows Edition: http://www.scala-lang.org/download/Linux version: http://www.scala-lang.org/download/2.11.8.htmlPull to the bottom:1.2ScalaIDE Downloads: http://scala-ide.org/download/sdk.htmlinstall Scala under 2.WindowsEnvironment: windows10+jdk1.7+scala2.11.82.1 InstallationHere, change the installation location:Done2.2 Test whether the installation was successfulFirst, set

Classes (Class)A class is a template for an object that, by constructing a class, can declare a series of objects of the same structure using the New keyword. One source file for Scala can contain more than one public class. Declaring the person class: Class person{ var name:string = _ Val Age = 10 Private[this] val gender = "Male" } Description The Name field is assigned the value "_" "_", which is a placeholder. Indicates that name is declared as St

About ScalaScala is a "stretched language", which can be changed and grown with the needs of the user. Scala can be used in a wide range of programming tasks, as small as scripts to build systems. Scala runs on the standard Java platform and can interact seamlessly with all Java libraries. It adds object-oriented and functional programming concepts to statically typed languages .

http://blog.csdn.net/lovehuangjiaju/article/details/47009607 The main contents of this section 1 class definitions, creating objects2 Main constructor3 Auxiliary constructor class definition, creating object Use keyword class to define class person { //class member must initialize, otherwise error //This is defined as a public member var name:string=null }1 2 3 4 5 6 1 2 3 4 5 6 The person class generates a Person.class file after compilingUsing the javap-prviate Person command to view t

Scala entry-Eclipse Development Environment setup Due to the need for deep learning, I recently started to learn Scala, an artistic programming language. Scala: a java-like programming. Integrates the features of Object-Oriented (Oriented) programming and Functional (Functional programming) programming, which facilitates the development of multi-core concurrency

To use Spark, learn Scala first.Reference Tutorial: Http://meetfp.com/zh/scala-basicOnline compilation: Http://meetfp.com/tryoutOther information: HTTP://SCALACHINA.COM/NODE/16 http://blog.csdn.net/mapdigit/article/details/21878083Characteristics: Scala is a purely object-oriented language, all objects: Unify primitive types and classes, and unify functi

Install Scala and Spark in CentOS 1. Install Scala Scala runs on the Java Virtual Machine (JVM). Therefore, before installing Scala, you must first install Java in linux. You can go to my article http://blog.csdn.net/xqclll/article/details/54256713to continue without installing the SDK. Download the

checksumaccumulator { private var sum = 0 = { + = b } = { return ~ (sum 0xFF) + 1 }}Any parameters passed to the method can be used inside the method. An important feature of the method parameters in Scala is that they are all Val, not var. If you want to reassign a parameter to a method, the result is a compilation failure:Scala> def Add (b:byte): Unit = { | // compile however, because B is Val | sum + = b| } a membe

Description, since Spark was written in Scala. Therefore, it is best to use Scala whether you are looking at the source code or writing spark-related codes. Then, as a programmer, the first thing to do is to sharpen the sword in hand. That's creating a code environment for writing Scala. Here because I am personally familiar with eclipse (although I think he is a

Background Notes Recent research spark need Scala to prepare a Scala environment for documenting the configuration notes.The Scala language is based on the Java language, so you have to install the JDK first. Experimental Environment: Win7 under VMware Virtual machine operating system: CentOS 6.5 x64 java:jdk-8u161-linux-x64.tar.gz scala:scala-2.12.4.tgz Install

Come from:http://lidrema.blog.163.com/blog/static/209702148201461145859142/Scala: A Java-like programming. Integrates object-oriented (object-oriented) programming and functional (functional programming) programming features to develop multi-core concurrency models and cloud computing (parallelism for Mulicore and cloud Comp uting). Bibliography: "Learn Scala", Author:horstmannbefore installing the

Use Scala to build Spring boot framework 1. Objective Spring boot is the most popular web framework on the Java development platform. Scala is a static type of functional programming language that runs on the JVM. The Big data processing spark framework is developed in the Scala language. This example integrates the Spring boot framework i

Java and Scala environment configuration in Linux Recently, I have been studying a project on "natural language processing". In this project, we need to use Spark for programming. The Spark kernel is developed by the Scala language. Therefore, before using Spark, We must configure Scala and Scala runs on the JVM. There

The neophyte ' s Guide to Scala part 12:type ClassesOver the past two weeks, we have discussed some functional programming techniques that keep us dry and flexible, in particular function combinations, the application of partial functions, and currying. Next, I'll continue to discuss how to make your code as flexible as possible.However, this time we will not discuss how to use a function as a class object for this purpose, but instead use the type sy

1. PreparationThis article focuses on how to build the Spark 2.11 stand-alone development environment in Ubuntu 16.04, which is divided into 3 parts: JDK installation, Scala installation, and spark installation. JDK 1.8:jdk-8u171-linux-x64.tar.gz Scala 11.12:scala 2.11.12 Spark 2.2.1:spark-2.2.1-bin-hadoop2.7.tgz It is important to note that

Scala List class Faq:how do I create a list in Scala?You can create a Scala List in several different ways, including these approaches: Lisp style Java style Using the List class range method Using the List class fill method Using the List class tabulate method In this Scala List tutorial,