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Now, here are the steps to build your development environment:Because Scala is a language on the JVM, we first install the Java Runtime environment. Download and install JDK8 from Oracle official website. Note that Scala only needs to run the Java environment, that is, to install only: JRE, but in order to facilitate future Java development, we still install the Java development environment. After the insta

There are several zip-related functions in Scala, such as zip,zipall,zipped, Zipwithindex, and so on. We often see such functions in our code, and this article mainly introduces the differences and uses of these functions.1, the ZIP function will pass in two parameters in the corresponding position of the elements to form a pair array. If one of the parameter elements is longer, then the extra parameters are deleted. Look at the English introduction:R

(Bus). Only through horizontal expansion (scale out), that is, distribution expansion by increasing the computer server and then using the distributed computing technology to divide the computational task into discrete servers for processing; This is the core of big data technology.Predictably, we will face the future: distributed data, high concurrency processing, parallel computing, NoSQL and very large interactive complex network platform programming. As a veteran programmer, experienced fro

Scala list/sequence faq:how do I iterate over a Scala List (or more generally, a sequence) using the foreach method or for loop?There is a number of ways to iterate over a Scala List using the foreach method (which was available to Scala sequences like ,,,, List Array ArrayBuffer Vector Seq , etc.) for and comprehensio

Previous Article: Scala Tutorial: interaction with Java, everything is an object This document is translated from the official Scala tutorial. to prevent misunderstanding, keep the original document for reference. Due to space limitations, there are three articles. Blog formats are not easy to adjust, interested friends can download PDF version: http://download.csdn.net/source/1742639 --- 6Condition class a

1. JDK official website address: https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html Scala is based on Java and uses a large number of Java class libraries and variables. Therefore, you must install Java before using Scala. Install JDK and select the installation path Check whether the installation is successful Open CMD and enter Java-version. If the Java version is

1. Download Scala 2.9.2 Since the latest Scala 2.10 stabilizer is not finished, it's best to download the latest Scala stable version: 2.9.2.Download Address: Http://www.scala-lang.org/downloads/distrib/files/scala-2.9.2.msiThe advantage of downloading the MSI version is that the environment variable is automatically

First, download Scala installation package From the official Scala website address: http://www.scala-lang.org/download/Download Scala binary package, in 2.11.8 version For example two, installation 1. Move the downloaded binary package to the/usr/local directory and unzip the package Tar zxvf scala-2.11.8.tgz MV

Tags: in addition to the input situation Eclipse blog free org Speed waterBuild maven Scala projects with eclipse1. Install the Scala IDE first, help-->eclipse Marketplace---> Enter scala--and install.2, select the following 4 need to install3, then install down, until the installation is complete.Second, in addition to installing the

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

Quick StartThis article describes how to use scala, java, and python to compile a spark click Mode Program. First, you only need to successfully build Spark on a machine. Practice: Enter the Spark root directory and enter the command: $ sbt/sbt package(Because of the Great Firewall of tianchao, the mainland China cannot succeed, unless you can smoothly flip the wall). If you do not want to climb the wall, you can download the pre-compiled Spark, spark

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

Recently, Google fully withdrew from China, Google's official website domain name google.com, Google Hong Kong google.com.hk are not open, ping google.com and google.com.hk two domain name server situation, the last ping out of the IP address is displayed as "The United States", that is, Google Hong Kong (google.com.hk) of the server has been transferred from Hong Kong to the United States, so the link time will be very long, even intermittent request time-out situation.This means that the big G