kotlin guide

1.kotlin official Chinese translation document URL: https://www.kotlincn.net/docs/reference/ 2.Kotlin website http://kotlinlang.org/ 3.kotlin Chinese website https://www.kotlincn.net/ 4.kotlin gitbook URL Https://www.gitbook.com/book/hltj/kotlin-reference-chinese/deta

Example of Kotlin Coroutines asynchronous loading, kotlincoroutines Preface Kotlin Coroutines is a new asynchronous API launched by Kotlin. It is not the best solution to all problems, but it is expected to make things easier in many cases. Here we will only briefly show the specific usage of this library in Android. I won't talk much about it below. Let's take a

Antonio LeivaTime:DecOriginal link:http://antonioleiva.com/kotlin-android-extensions/You may be tired of using Findviewbyid to write Android views day after day. Or you might abandon it instead to use the famous Butterknife library. Then you will love Kotlin's Android extension.Kotlin's Android ExtensionKotlin's Android extension is one of the regular plugins of the Kotlin plugin, which seamlessly covers th

Now the way to develop the App is very many, native, reactnative, flutter is a good choice. Do you have any concerns about the size of the APK that is compiled and built using different methods? This article is a simple Hello world App, to see the different frameworks, the size of the compiled APK, what is the difference. Of course, the context of this article is a simple Apk, in fact, only partially explain the problem, do you think?-Incense Ink FilmMobile development So far, there are many way

Kotlin Programming related knowledge points : Kotlin programming using IntelliJ IED and understanding Source files (. kt) Kotlin programming and other properties Kotlin programming methods such as using Kotlin programming Kotlin t

Kotlin transmits variable length parameters to Java Variable Parameter instance code, kotlinjava This article mainly studies how Kotlin transfers variable length parameters to Java variable parameters. The specific implementation code is as follows. Defines Java Variable Parameter Methods Package com. tcl. john. studymvvm. utils;/*** call Java method tool class * Created by ZhangJun on. */public class Ca

Kotlin built-in numeric typeNote: Numeric types in Kotlin cannot be implicitly convertedKotlin supports binary, decimal, hexadecimal, but octal is not supportedbinary var a = 0b0011_0011 (starting with 0b)decimal var b = 999Hex var c = 0x1a4f (starting with 0x)Kotlin to create a numeric type object: 1 fun Main (Args:array 2 var int : int= 1 3 var long : Long =

Using http://start.spring.io/to download the Project Run Unit Test report java.lang.ClassNotFoundException: Kotlin.reflect.KotlinReflectionInternalErrorReason isJackson-module-kotlin version references kotlin-reflect too low by defaultThere is no such kotlinreflectioninternalerror in the new kotlin-reflect.WorkaroundDeclare specific versions of Jackson-module-

Cloudopt Next is a Kotlin, vertx-oriented, next-generation, ultra-lightweight microservices framework that allows you to handle URL parsing, data encapsulation, JSON output, and more, radically reducing development time and improving the development experience. Cloudopt next absorbs the ideas of spring Boot, jfinal, Resty, VERTX and other outstanding projects, with a very good development experience and a very low learning curve.Cloudopt Next has the

When I woke up, I suddenly found out that Google has Kotlin as the first-level development language for Android, saying that it's going to be next to Java (but I always feel that Java is being discarded, mostly oracle things do sometimes ...). , Kotlin before really did not pay attention to, open IntelliJ idea, found in fact Kotlin module already had. So quickly

View all my open source projects "open Source Labs"Welcome to join my QQ group: "257053751", this blog client download "please click"SummaryIf you really want to learn more about the Kotlin language, you can view the English version of the Kotlin language document, or my Kotlin language document Chinese translation Project KOTLINDOC-CN:HTTPS://GITHUB.COM/KYMJS/KO

Antonio LeivaTime:Dec,Original link:https://antonioleiva.com/kotlin-integrations-android-sdk/Using the Kotlin language not only simplifies your code, but it also simplifies calling Java code from Kotlin.How does this work? Simply using some common structure can get a sense of kotlin.In this article, you'll see some examples of how to promote the same code. It also prevents the Java code from including the t

1. Define Package NameConventionally, the package definition places the top of the code source file Package Com.demo.hellokotlin Import java.util.* //... This is no different from the Java definition. 2. Definition methodThe first way to get started with Java is the main method, and Kotlin main is much simpler, using the keyword Fun Declaration, as follows: Fun Main (args:array Define a sum that returns two integers, you can see that the paramete

Basic Syntax 1. Define Package name As in Java, at the head of the file Package My.demo Import java.util.* 2. Definition Method Take the following method as an example: Fun sum (A:int, b:int): Int { return a + b } Methods start with the fun keyword, a:int, and B:int as the method parameter. After the parentheses: int is the return value. The Kotlin statement differs from Java in that it does not; End. The