一起来学Kotlin:概念:9. Kotlin Class:数据类(data class),枚举类(Enum Class),密封类(Sealed Class) 在这篇博客中,我们将详细介绍 Kotlin 各种类,包括类的构造函数,数据类(data class),枚举类(Enum Class),密封类(Sealed Class)。 文章目录 一起来学Kotlin:概念:9. Kotlin Class:数据类(data class),枚举...
Enumerations inKotlinare data types that hold a set of constants. Enums are defined by adding the modifierenumin front of aclassas shown below. Yes, in Kotlin,Enums are classes. Kotlin中的枚举是保存一组常量的数据类型。 枚举是通过将改性剂定义enum在前面类,如下所示。 是的,在Kotlin中,枚举...
Kotlin——最详细的类(calss)详解 目录 一、枚举类 1.1、声明方式及枚举常量 关键字:enum 枚举常量:即枚举类下的对象,每个枚举类包含0个到多个枚举常量。 1.1.1、声明 enum关键字在类头中的class关键字前面 声明格式: enum class 类名{ ... } 1.1.2、枚举常量 枚举类中的每一个枚举常量都是一个对象,并...
In the Kotlin language, there’s more than one way to achieve this. In this tutorial, we’ll take a look at the two most commonly used class types for such use cases: the sealed class and the enum class. 2. Sealed Class Sealed classes provide a hierarchy of classes that have ...
3. Using Enum Class’svalueOf()Function In Kotlin, each enum class has avalueOf()function. ThevalueOf()function is exactly what we’re looking for, as it allows us toget an enum constant by its name. For example, this test passes: ...
for (i in 1..3) { state = state.nextState() println(state) } } 输出: StopStartRunStop data类 在Java中,我们在信息类创建信息类时总是伴随大量getter/setter方法,虽然可以用工具自动生成,但也影响美观。Kotlin中使用data类型帮助我们解决了这个问题。 data class User( var name: String, var age:...
Kotlin Enum - Enum is a special data type that allows a variable to hold a value only from a set of predefined constants. In this tutorial, learn about Kotlin Enum Class : Syntax, Initialization, how enum classes are different from regular classes. An ex
[Kotlin] Enum class enumclassColor { RED, GREEN, BLUE } fun main() { println(Color.GREEN)//GREEN} Or give enum a value: enumclassColor { RED(0xFF0000), GREEN(0x00FF00), BLUE(0x0000FF) } Give a method: enumclassColor(val rgb: Int) {...
问Kotlin Enums:引用任何Enum对象的函数ENenumclassMolecularFragment{H2,H2O,CH3,CH2}enumclassMolecule(...
问EnumClass.values()在Kotlin中是如何工作的？ENEnumClass.values()在Kotlin中是如何工作的？虽然不是...