One of the great things about Kotlin is that it supports functional programming. Let’s see and discuss some simple but expressive functions written in Kotlin. Kotlin的一大优点是它支持函数式编程。 让我们看一下并讨论一下用Kotlin编写的一些简单但富有表现力的函数。 (Collection processing) Kotlin has ...
三、扩展函数和扩展参数 对三方SDK和无法控制的类,使用Kotlin可以很方便的对其进行扩展,添加成员方法和成员属性。扩展函数是通过装饰者模式,编译时将扩展函数编译为Java中的静态方法,因此是静态解析,不具备运行时的多态特性。 // 给String类添加扩展函数 fun String.isIrving(): Boolean = this == "Irving" // ...
} 如果参数为null最终就会抛出*"Parameter specified as non-null is null: " + "method " + className + “.” + methodName + ", parameter " + paramName);异常*。 2.解决办法 解决的办法也很简单,只要在Java调用Kotlin时注意参数是否可空就可以了。如果参数可以为null那就就要在Kotlin代码中加上?以标...
Kotlin has single inheritance from a named superclass, and all Kotlin classes have a default superclass Any, which is not the same as the Java base class java.lang.Object. Any contains only three predefined member functions: equals(), hashCode(), and toString(). Kotlin classes have to be...
Kotlin is a newly created programming language which is inspired by Java but is an improved version of it with many additional features.
Realm is a mobile database that runs directly inside phones, tablets or wearables. This repository holds the source code for the Java version of Realm, which currently runs only on Android. Realm Kotlin TheRealm Kotlin SDKis now GA and can be used for both Android and Kotlin Multiplatform. ...
In 1 source file so apps can include as source & avoid adding a dependency. Written in Java, usable from Groovy, Kotlin, Scala, etc. picocli.info Topics git java cli commandline parser autocomplete command-line completion annotations ansi executable argument-parsing subcommands cli-framework ...
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We're happy to announce the release of a new bugfix and tooling update of Kotlin, version 1.0.4. This version brings many improvements related to the IDE and build tools, as well as JavaScript support
same byte code. Kotlin can be compiled into JavaScript or an LLVMencoder, which enables programmers to performjust-in-time compilingto ensure that code embedded in another program runs smoothly. It also shares tooling with Java. These features make it easy to migrate Java applications to Kotlin....