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Talking about Kotlin (III): Class, talking about kotlin Kotlin (1): Introduction and configuration in Android Studio Kotlin (2): basic types, basic syntax, and code style Talking about Kotlin (3): Class Preface: I have learned the first two articles and have a basic underst

1 Creating a new projectAndroid Studio creates a new project with only one empty mainactivity2 Installing KotlinFile-seeting-plugins-install jetbrains Plugin input Kotlin installation,If the installation fails, open the C:\Users\ user \. Androidstudio2.3\system\log\idea.log "This file, find KotlinHttp://plugins.jetbrains.com/pluginManager/?action=downloadid=org.jetbrains.kotlinbuild= ai-162.2228.14uuid=6b417889-78a8-4cc8-ac6c-3e8d64c5a56cDownload to d

Kotlin data class: saves a lot of lines of code (KAD 10) and kotlin many lines By Antonio Leiva Time: Jan 25,201 7 Link: https://antonioleiva.com/data-classes-kotlin/ In the previous article, we have seen classes, and data classes can further help us simplify code. What is a data class? DataIs an action that only contains the status and does not have any exec

Kotlin learning notes basic syntax, kotlin learning notesKotlin Study Notes (2)-basic syntax Kotlin learning notes Series Kotlin Study Notes (1)-Overview, learning curve, development tools, references 1. Basic syntax definition package The package declaration should be at the top of the source file: package hard.uistud

Kotlin series: function details, kotlin function details Summary: The Use and definition of functions in kotlin are more flexible and diverse. In addition, it supports different degrees of expansion to help developers create their own methods and improve development efficiency, here, we will briefly introduce the use of different functions. Extended functions wi

first, class definition The class is declared using the Generic keyword class in Kotlin, followed by the class name: Class Kotlinclass {// class name Kotlinclass //curly braces are the body composition } Interface Definition Interface Ikotlininterface Single Case Kotlin uses the object class to modify classes, you can implement a singleton mode,Java Singleton class: public class javainstanceclass{

Kotlin and kotlinThe main function of the basic function variable can be independent of the class static function.Class static function, you need to put the function into the braces of the companion object. class Static { companion object { fun add( a: Int, b:Int):Int = ( a + b ) }}fun main(args: Array ) { Static.add(1,2);} String Template fun main(args: Array ) { println("Hello, ${if (args.size >

Just ended the Google IO Conference really dry, as programmers most let me just interested in or Google announced that Kotlin become the first development language AndroidThis is indeed a more shocking news, as the mobile development of me, is bound to grasp the development of the language in time.Personally read Kotlin's Chinese document, feel its grammar and swift very similar (in the end who copied who ~), so if you have the effect of swift develop

Kotlin parameter confusions, kotlin ParameterThe literal function is enclosed in braces and the parameter is declared before (the parameter type can be omitted). The function body is after->. Parameter (T)-> R /*** Map function maps a value to another value * map accepts a function, which has a parameter T */inline fun Array . Map (transform :( T)-> R): List {Return mapTo (ArrayList (Si

Issue 1: Create a new Android project that supports Kotlin, stuck in "Resolve Dependency:classpath"Solution Analysis:Generally encountered "Resolve Dependency:classpath" stuck motionless, and so on if still did not respond, should be never response. Restart Android Studio or Gradle sync again, and if not, look at the gradle version of "Gradle-wrapper.properties" in the project and go to the system. Gradle The directory below to see if the correspondin

Google IO 2017 announced that Kotlin will become the official Android language. A time friends Circle and Android Circle are all kinds of brush screen. Of course, I also take advantage of the release of an article "Why I want to use Kotlin", really fiercely rubbed a wave of heat (although this will be despised). Now that the Android circle is agitated, even if it turns a blind eye to

Google Daniel said: Why Kotlin than you use the rubbish language is goodOriginal title: Google Daniel said: Why Kotlin than you use the rubbish language is good Compilation: Bole Online/Huang "Bole Online/Programmer's Things Guide": May 18, the Android team at the Google I/O 2017 conference announced that Kotlin became the official first-class suppo

Interoperability is the interface that can invoke other programming languages in Kotlin, so long as they open the interface, Kotlin can invoke its member properties and member methods, which are unmatched by other programming languages. Also, the API interface in Kotlin can be invoked while Java programming is in progress. K