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Functions in the Kotlin

No matter the function or the method we collectively refer to the function here, the function in Koltin is much richer than that in Java, we have this article to understand the various functions in Kotlin. Inline Functions Android Development, printing information in general we will use the log class, log each method we have to pass two parameters, the first tag parameter in the Kotlin we can be encapsulate

How does a Lambda expression work in Kotlin: setOnClickListener conversion (KAD 18), 180

How does a Lambda expression work in Kotlin: setOnClickListener conversion (KAD 18), 180 By Antonio Leiva Time: Mar 28,201 7 Link: https://antonioleiva.com/lambdas-kotlin-android/ Although I have mentioned a little about Lambda expressions in other articles, I would like to explain in depth how Lambda expressions work in Kotlin, and when we use the Java librar

How to Use Mockito2 mock final class (KAD 23) and kotlinmockito2 on Kotlin

How to Use Mockito2 mock final class (KAD 23) and kotlinmockito2 on Kotlin By Antonio Leiva Time: Mar 2 and 2017 Link: https://antonioleiva.com/mockito-2-kotlin/ As mentioned in the previous article, one of the most common problems with Kotlin is that by default, all classes and functions are disabled. That is to say, if you want a mock class (which may be ve

Get to know the Swift on the Android platform of Kotlin.

Get to know the Swift on the Android platform of Kotlin. The Kotlin syntax is concise and has the characteristics of a series of dynamic languages, Lambda expressions, high-order functions, closures, and even type checks for static languages. The core point is to write the same function, kotlin requires a lot less code. The following is a JAVA data class public c

Kotlin Secret recipe for Android (I): Ongloballayoutlistener

After the Spring Festival, the new "opening". Please continue to support the master. Thank you!Original title: Kotlin Recipes for Android (I): OngloballayoutlistenerOriginal link:http://antonioleiva.com/kotlin-ongloballayoutlistener/Original Antonio Leiva (http://antonioleiva.com/about/)Published in the original: 2016-03-16Kotlin Secret recipe for Android (I): OngloballayoutlistenerToday, a companion asked

Kotlin supports jdk1.8 compilation, using JAVA8 features

A recently used jar package uses the static method of the interface in the JAVA8.This will add a bit of configuration to the Gradle build file when compiling. Common Java Engineering in the Build.gradle to add the following configuration:compileoptions {sourcecompatibility javaversion.version_1_8 targetcompatibility JavaVersion.VERSION_1_8 }so the new features of JAVA8 can be compiled normally, but the above configuration is only for Java code compilation, K

Kotlin Study Material Summary

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

Android Studio uses Kotlin for the first time (environment preparation article)

Google announced at this year's I/O developers conference that the Kotlin language should be used as the first-level programming language of Android development. Kotlin is developed by JetBrains, interoperable with Java 100%, and has many new features that Java does not yet support. So you know what Kotlin is? If you do not know that then hurriedly own Baidu. ab

Kotlin android Extension: Say Goodbye to Findviewbyid (KAD 04)

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

"Translate" Java, Kotlin, RN, flutter developed by the size of the App, you know it?

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 interface and implementation interface

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

How to deploy kotlin+spring boot-developed projects on Tomcat

This article is only about the deployment process, you have to ensure that your program can run in the IDE, first look at the port number set in your application.properties and your server tomcat port number is consistentserver.port=80(I'm not sure if this configuration will affect deployment) look at the entry function for your application@SpringBootApplication@EnableAutoConfiguration(exclude = arrayOf(DataSourceAutoConfiguration::class))class JnaApplication: SpringBootServletInitializer() {

How to determine the first launch of the iOS app and the first launch after each update

The popular solution is a key in most places where [Nsuserdefaults standarduserdefaults] is used, if it does not exist, which means that this is the first time the application is started, otherwise it is not the first bootIn APPDELEGATE.M, locate the "Application:didfinishlaunchingwithoptions:" Method and add the following code:1 if(! [[Nsuserdefaults Standarduserdefaults] Boolforkey:@"Firstlaunch"]) {2[[Nsuserdefaults Standarduserdefaults] Setbool:yes forkey:@"Firstlaunch"];3NSLog (@"first time

Congratulations on the successful launch of CSDN and on the successful launch of csdn.

Congratulations on the successful launch of CSDN and on the successful launch of csdn. The Summer Palace also has a small Swift video course at school C. The total class is 19 lessons and nine lessons have been uploaded. The Summer Palace will be completed in time for the remaining class hours, and four free courses will be offered. The content of this course is really simple, because I personally think t

Use Anko and Kotlin to implement the dialog box and warning prompt (KAD 24) on Android and ankokotlin

Use Anko and Kotlin to implement the dialog box and warning prompt (KAD 24) on Android and ankokotlin By Antonio Leiva Time: Mar 9 and 2017 Link: https://antonioleiva.com/dialogs-android-anko-kotlin/ Using Builder, creating warning prompts and dialog boxes in Android is relatively simple. However, due to the complicated language, some prompts are usually vague. In K

Attribute delegation of Kotlin: Android assignment (KAD 15) and kotlinandroid without context

Attribute delegation of Kotlin: Android assignment (KAD 15) and kotlinandroid without context By Antonio Leiva Time: Mar 9 and 2017 Link: https://antonioleiva.com/property-delegation-kotlin/ As we have read in the previous article, attributes require default values, and attributes cannot be declared without being assigned values. Because you want to store the view to the attribute, this creates a prob

Kotlin transmits variable length parameters to Java Variable Parameter instance code, kotlinjava

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

Run background tasks with Kotlin Anko in Android (KAD 09)

Antonio LeivaTime:Jan,Original link:Https://antonioleiva.com/anko-background-kotlin-android/Anko is an Android library developed by JetBrains with Kotlin, which can be used in many different ways. Its main feature is the use of DSL code to create a view .While this may be interesting, the fact is that I have been using XML very well for a long time. So there's not much to try with this feature.In fact, it h

Kotlin types of numbers (numbers, characters, booleans, and arrays)

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 =

Springboot 1.5.10 +kotlin 1.2.20 Solution Java.lang.ClassNotFoundException:kotlin.reflect.KotlinReflectionInternalError

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-

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