scala book

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

in section 18.1 so that we can make the following call:Book set Title to ' Scala for the impatient ' set Author to ' Cay Horstmann 'Packageex18_03objectmainextendsapp{valbook=new DocumentbooksetTitleto "Scalafortheimpatient" setauthorto "Cayhorstmann" println (book)}// Knowledge points: Singleton type object title//thisobjectisusedasanargumentfora fluentinterfaceobjectauthorclassdocument{privatevartitle =

Write in frontThanks to all the friends who came in to see. Yes, I'm currently going to write a book about unity shader.The purpose of the book is to have the following several: Summarize my experience with unity Shader and give others a reference. I am very aware of the difficulties of learning shader, and I have seen many questions raised by people in the group. I think learning shader is still a

Scala learning document directory 1. Array 2. List 3. Map 4. Break 5. If else 6. 7. foreach 8. Option 9. tuple 10. Code conventions 11. Request to accept array or array content 12. Array usage 1) Scala Definition General Definition: Val array1 = array [String] ("str1", "str2 ") Array of specific length: Val array2 = new array [list [int] (Leng) 2) The array cannot be extended. Therefore, you can define arra

First, REPLThe Scala interpreter reads an expression, evaluates it, prints it out, and then continues to read the next expression. This process is called a read-print-loop, or REPL.Technically speaking, the Scala program is not an interpreter. What actually happens is that the content you enter is quickly compiled into bytecode, which is then handed to the Java Virtual machine for execution. Because of this

This is a creation in Article, where the information may have evolved or changed. Format conversion Classes category Python Java Scala Go Excel XLWT/XLRD, Xlsxwriter Poi - - Pdf PyPDF2 Apache FOP - - Csv Csvkit, Tablib - - - XML parsing Beautifulsoup/bs4 - - - Json - Jackson Json4s, Spr

1. To install the JDK first:Http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.htmlAfter the installation is successful, you can see the version information in the terminal input java–version for the installation to succeed:? ~ Java-versionjava Version "1.8.0_65" Java (tm) SE Runtime Environment (build 1.8.0_65-b17) Java HotSpot (tm) 64-bit Ser Ver VM (build 25.65-b01, Mixed mode)2. Install ScalaTo the Scala website, down

Label:PerformThe previous article described how to use the built-in DSL support provided by Scala to implement a parser that can parse SQL, how to get the parsing results-ast, how to operate on the data, and get the results we want. Previously, the reason for choosing Scala as an implementation of this engine is that Scala provides convenient DSL implementation s

from:http://mkaz.com/solog/scala/using-scala-with-jdbc-to-connect-to-mysql.html Using Scala with JDBC to connect to MySQL Date:may 27, 2011 A howto on connecting Scala to a MySQL database using JDBC. There is a number of database libraries for Scala, but I-ran into a probl

OverviewTo put it simply, implicit conversions are: When the Scala compiler does type matching, if no suitable candidate is found, implicit conversions provides another way to tell the compiler how to convert the current type to the expected type. This article source: http://blog.csdn.net/bluishglc/article/details/50866314 prohibited any form of reprint, or will entrust CSDN official maintenance rights!There are four common usage scenarios for implici

map4. Sorted MappingsAn immutable tree map is obtained as follows: Val scores4 = Scala.collection.immutable.SortedMap ("Alice", "Bob", 7, "Cindy", 9)For variable tree mappings, the closest option is to use Java's treemap.If all keys are accessed in the order in which they are inserted, Linkedhashmap is used. Val months = Scala.collection.mutable.LinkedHashMap ("January", 1, "February", "2", "March", 3, "April", 4, 5,...)5. Interoperability with JavaTranslating Java mappings into a

Scala as a functional programming language, to the students accustomed to the instruction programming language, will not be used to, here in addition to the way of thinking, there are grammatical aspects, such as underscore (underline) will appear in a variety of occasions, so that beginners are quite puzzled, today to summarize the next Scala The usage of the underline.1. Type of existence: Existentialtype

Scala 24-point game (1): expression computing (1) Scala 24-point game (2): expression computing (2) Scala 24-point game (3): expression computing (3) Scala twenty-four point game (4): One of the algorithms Scala game (5): List Introduction

　　First, prefaceLearn Scala's methods and then learn about object in ScalaSecond, ObjectThere are two meanings of object in Scala, in Java, which represents an instance of a class, and in Scala it's a keyword, and this article will first look at object as an instance of a class, showing how to convert objects from one type to another. We'll show you how to create a singleton, and there's a package object in

Eclipse is a very useful development tool, and the kids ' shoes that are familiar with it should know that it is not only the most commonly used Android development tool , but also the most common Java development tool. Since eclipse is so important, the small part of this article will be together with you to pick up the knowledge of building a Scala development environment in Eclipse, interested children shoes can come together to see.1 ,

Call-by-name and Call-by-value in Scala Var/def/val/lazy Valdef: Similar to every assignment, if you define a function with Def, you regain a function each time, doing call-by-name operations. Val: Get once and execute immediately, and no longer be modified during the life cycle, using the call-by-value operation. var: can be assigned again in the lifecycle lazy Val: Lazy execution, which is assignment (binding), is not performed until it is needed E