best kotlin tutorial

Elimination of function overloading in the Kotlin series and kotlin function Overloading I. Problems Caused by function Overloading 1. Problems Encountered Whether in Java or C ++, function Overloading is used to expose interfaces with different parameters, including the number of parameter lists and parameter types, to meet service requirements of different functions, parameter order. However, different

KOTLIN development language documentation (official documentation), kotlin development language Web link: https://kotlinlang.org/docs/reference/basic-types.html2. Basic Concepts 2.1. Basic Types From the perspective of Calling member functions and attributes in any variable processing, everything in the Kotlin development language is an object. Some types are emb

Kotlin series: top-level functions and attributes, top-level functions of kotlin Series Let's take a look at top-level functions and attributes in Kotlin today.Problems encountered As we all know, in Java, all codes exist based on classes. Our so-called Functions Act as class methods, and our so-called attributes act as class attributes. However, in some cases,

Kotlin series exceptions and Kotlin Series Issues In this section, we will talk about exceptions in Kotlin.Java exceptions We know that exceptions in Java are an endless topic. When talking about exceptions, the first thing that comes to mind isTry... catch... finally is the same in Kotlin. The usage is almost unchanged, but there are also some small changes. He

How to convert code from Java to Kotlin: Now you can use Kotlin (KAD 29) and kotlinkad By Antonio Leiva Time: Jul, 4, 2017 Link: https://antonioleiva.com/kotlin-from-java/ One of the most amazing features of Kotlin is its ability to fully integrate with Java. This means that although all the code of your application

The first kotlin project and the first kotlin Project How to Use Kotlin in Android Studio? 1. Use the Android Studio plug-in 2. Upgrade Android Studio to version 3.0: it is not recommended currently, because version 3.0 is still in the Dev Channel, that is, the development Channel, and has not yet been officially released. So today we will talk about how to creat

Introduction to Kotlin syntax and kotlin syntaxKotlin syntax Kotlin is toxic and addictive when used ...... A little exaggerated. It was actually used to write a demo that records POI and tracks. However, the syntax is really concise. Here, Kotlin is different from Java, or it has more concise and elegant syntax and fe

Kotlin series: extended functions and attributes, and kotlin series extended functions Extended functions and attributes can be added based on existing classes, but these functions and attributes are defined outside the class. Are you curious? Let's take a look.Extended Functions Let's use an example to analyze and add a member function to the String class.LastChar, used to obtain the last character of a s

Must be written in front: it takes only a few days to move from Java to Kotlin!This is the last article of Kotlin developing the Android series tutorial. The previous several introduced the basic syntax of Kotlin, and the differences with Java and so on. In this article, we will use the previous knowledge point to deve

The path to kotlin growth and the path to kotlin Learning Preface: Starting from Kotlin, that is, my decision to start writing a technical blog today, I have a poor literary talent. Thank you for your understanding and guidance. This article is my guide to Kotlin growth for the most bloggers. Therefore, the content i

Kotlin class and object, and Kotlin Class Object InheritanceClass Use the class keyword to declare a class in Kotlin class Invoice { } The class Declaration consists of the class name, Class header (specifying its type parameter, main constructor, etc.), and the class body surrounded by curly brackets. Both the Class header and class body are optional.

Kotlin Series 5 --- data class, seal class, internal class details, kotlin --- Summary: kotlin has been learning for a while. It takes a little time to look at it every day. It will take a long time to forget it. It is only necessary to sort it out again, in this article, we will sort out the basic usage of several categories, which are roughly the same as thing

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 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

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 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

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