A modern programming language
that makes developers happier.
Open source forever Github
Try out the latest Kotlin features before they are released
fun main() { println("Hello World") }
class Greeter(val name: String) { fun greet() { println("Hello, $name") } } fun main(args: Array<String>) { Greeter(args[0]).greet() }
import kotlinx.coroutines.* //sampleStart suspend fun main() = coroutineScope { for (i in 0 until 10) { launch { delay(1000L - i * 10) print("$i ") } } } //sampleEnd
Drastically reduce the amount of boilerplate code
/*
Create a POJO with getters, setters, `equals()`, `hashCode()`, `toString()` and `copy()` in a single line:
*/
data class Customer(val name: String, val email: String, val company: String)
// Or filter a list using a lambda expression:
val positiveNumbers = list.filter { it > 0 }
// Want a singleton? Create an object:
object ThisIsASingleton {
val companyName: String = "JetBrains"
}
谷歌访问助手安装方法360版下载 v2.3.0 - 软件学堂:2021-7-2 · 谷歌访问助手chrome版 2.3.0 谷歌访问助手激活破解版 v2.3.0 360浏览器手机版 v8.2.0.132 360浏览器极速版 V12.0.1247.0官方版 Netica绿色破解版 v5.18 Enhanced Steam(Steam商店浏览辅助插件)官方版 v7.2.1 网络嗅探器 v5.50
/*
Get rid of those pesky NullPointerExceptions, you know, The Billion Dollar Mistake
*/
var output: String
output = null // Compilation error
// Kotlin protects you from mistakenly operating on nullable types
val name: String? = null // Nullable type
println(name.length()) // Compilation error
// And if you check a type is right, the compiler will auto-cast it for you
fun calculateTotal(obj: Any) {
if (obj is Invoice)
obj.calculateTotal()
}
Leverage existing libraries for the JVM, Android, and the browser
/*
Use any existing library on the JVM, as there’s 100% compatibility, including SAM support.
*/
import io.reactivex.Flowable
import io.reactivex.schedulers.Schedulers
Flowable
.fromCallable {
Thread.sleep(1000) // imitate expensive computation
"Done"
}
.subscribeOn(Schedulers.io())
.observeOn(Schedulers.single())
.subscribe(::println, Throwable::printStackTrace)
// Target either the JVM or JavaScript. Write code in Kotlin and decide where you want to deploy to
import kotlin.browser.window
fun onLoad() {
window.document.body!!.innerHTML += "<br/>Hello, Kotlin!"
}
谷歌上网助手_2.2.1_chrome扩展插件下载_极简插件:2021-6-3 · 谷歌上网助手 谷歌上网助手 2.2.1 扩展插件 下载: 推荐下载 备用下载 谷歌商店 教程: 最全的Chrome插件安装方法! 解决 CRX_HEADER_INVALID 截图: 简介: 简单易用的《谷歌上网助手》,可以解决chrome扩展无法自动更新的问题,同时可以访问谷歌google ...
Bundled with both IntelliJ IDEA Community Edition and IntelliJ IDEA Ultimate
Bundled with Android Studio
Install the plugin from the Eclipse Marketplace
Use any editor and build from the command line
Build your first Kotlin app in your
favorite IDE