kotlin enum的八卦，YOUTUBE和 Yahoo名人娛樂都在討論：

#11. Kotlin-第10課-列舉（Enum） | 新手工程師的程式教室 - Medium

像這種只有固定物件的類別，可以採用「列舉」（enumeration）的概念來設計。在寫程式的期間就定義好各個物件，並直接利用。

#12. Access enum values and valueOf via KClass : KT-14743

The use-case is Kotlin serialization where we need to be able to write a non-inline method ... fun <T : Enum<T>> readEnumValue(enumClass: KClass<T>): T = .

#13. A complete guide to enum classes in Kotlin - LogRocket Blog

Kotlin enums are classes, which means that they can have one or more constructors. Thus, you can initialize enum constants by passing the values ...

#14. Enum | Android Developers

kotlin.Any. ↳, java.lang.Enum ... Note that for a particular enum type T , the implicitly declared public static T valueOf(String) method on that enum may ...

#15. Kotlin 列舉類

enum class Color(val rgb: Int) { RED(0xFF0000), GREEN(0x00FF00), ... 自Kotlin 1.1 起，可以使用 enumValues<T>() 和 enumValueOf<T>() 函式以泛型的方式訪問列舉 ...

#16. Kotlin Enums Tutorial for Android: Getting Started

You can't define enum cases at runtime, and there's no reason to: It would defeat their purpose of holding a predefined set of values. It's also ...

#17. kotlin 中Enum.values() 和enumValues() 的区别 - IT工具网

inline fun <reified T: Enum<T>> getEnumValuesString(): String { // could call RGB.values(), but not T.values() // even with the generic constraint and ...

#18. 反向查找在Kotlin中有效的枚举？ - QA Stack

我正在尝试找到对Kotlin枚举进行“反向查找”的最佳方法。 ... interface Codified<out T : Serializable> { val code: T } enum class Alphabet(val value: Int) ...

#19. Kotlin枚举类 - 易百教程

自Kotlin 1.1 起，可以使用 enumValues<T>() 和 enumValueOf<T>() 函数以泛型的方式访问枚举类中的常量： enum class RGB { RED, GREEN, BLUE } inline fun <reified T ...

#20. Kotlin (or Java) Enum Classes: The Good, the Bad and the Ugly

The constants of an enum don't necessarily require a value. Without a value, they can be used in validation through ifs and switch ...

#21. Kotlin: How to check if enum contains a given String without ...

Kotlin 1.1. /** * Returns `true` if enum T contains an entry with the specified name. */ inline fun <reified T : Enum<T>> enumContains(name: String): ...

#22. 一起幫忙解決難題，拯救IT 人的一天

Day 10 | Kotlin 的物件導向程式設計（Object-oriented programming, ... Enum classes 中也可以加上需要的Properties 和Functions ，這部份與Java 都一樣. Example:

#23. Enum Classes in Kotlin - GeeksforGeeks

Unlike Java enums, Kotlin enums are classes. Some important points about enum classes in kotlin –. Enum constants aren't just mere ...

#24. Enum Classes - Kotlin - W3cubDocs

The most basic usage of enum classes is implementing type-safe enums: ... IntBinaryOperator { PLUS { override fun apply(t: Int, u: Int): Int = t + u } ...

#25. 关于泛型：如何从枚举类和Kotlin中的字符串获取原始类型的枚 ...

How to get enum value of raw type from an enum class and a string in kotlin我在Java中有以下代码：[cc]Enum getEnumValue(Class< ? >

#26. Kotlin 枚舉類 - it編輯入門教程

枚舉常量用逗號分隔,每個枚舉常量都是一個對象。 enum class Color{ RED,BLACK ... 自Kotlin 1.1 起，可以使用 enumValues<T>() 和 enumValueOf<T>() 函數以泛型的方式 ...

#27. how to use enum in kotlin Code Example

enum class RGB { RED, GREEN, BLUE }. 2. ​. 3. inline fun <reified T : Enum<T>> printAllValues() {. 4. print(enumValues<T>().

#28. Kotlin枚舉類 - 億聚網

枚舉類的最基本的用法是實現類型安全的枚舉enum class Direction { NORTH, SOUTH, ... 自Kotlin 1.1 起，可以使用 enumValues<T>() 和 enumValueOf<T>() 函數以泛型的 ...

#29. Перечисления (enum) - Kotlin - Kotlinlang.ru

Наиболее базовый пример использования enum — это реализация типобезопасных ... IntBinaryOperator { PLUS { override fun apply(t: Int, u: Int): Int = t + u } ...

#30. Kotlin get enum by value - Smougerz

The set of values in enum class is also restricted, however an enum constant can have only single Namely Kotlin enum can't override compareTo and things can ...

#31. enum valueOf with just a KClass<*>: Kotlin - Reddit

I think once I move this to a more universal JVM based serialization I won't have that information and will have to resort to Any, in which case ...

#32. Kotlin Generic Function With Enum Constraint - ITTone

inline fun<T: Enum<T>> myFunction(enumStr: String){ T.valueOf(enumStr) //... } so that my generic parameter is constrained to be of enum ...

#33. Enum Classes in Kotlin

Most often, though, you'll probably just pass it a String directly. You don't have to define this function. Kotlin automatically makes this function available ...

#34. Kotlin - Enum Classes | Digital Innovation One

Kotlin - Enum Classes. ... override fun apply(t: Int, u: Int): Int = t + u ... As enums em Kotlin oferece acesso a duas propriedades, ...

#35. Enum vs Sealed class — which one to choose? - Kt. Academy

Kotlin enums can even have methods. Their implementations are also item-specific. When we define them, enum class itself (like PaymentOption ...

#36. Using Enum Classes in Kotlin - Part 10 Kotlin Tutorial 2020

Learn to create and use Kotlin enum classes in Part 10 of this Kotlin programming tutorial for ... Your browser ...

#37. java - Kotlin中的Enum.valueOf

有没有办法在Kotlin中进行类似的工作而无需进行反射(reflection)？ inline fun <reified T : kotlin.Enum<T>> safeValueOf(type: String?): T? { return java.lang.

#38. Enum.valueOf в Kotlin году - CodeRoad

inline fun <reified T : kotlin.Enum<T>> safeValueOf(type: String?): T? { return java.lang.Enum.valueOf(T::class.java, type) }.

#39. Kotlin enum example

You get a number of interesting pieces of functionality that enums in other languages don't necessarily have. 0. Each of the enum constants acts as separate ...

#40. How use Kotlin enum with Retrofit? [duplicate] - py4u

enum class VehicleEnumEntity(val value: String) { CAR("vehicle"), ... This means you don't need to annotate every enum value, but instead you can annotate ...

#41. Enum classes | Kotlin Quick Start Guide - Packt Subscription

Kotlin, same as Java has an enumeration type, the enum class. ... The class would be error-prone and users of your class wouldn't be happy.

#42. Kotlin: How to extend the enum class with an extension function

kotlin enum ordinal. I'm trying to extend enum classes of type String with the following function but am unable to use it at the call site like so: fun <T: ...

#43. Kotlin Reference: Enum Classes | nex3z's blog

从Kotlin 1.1 开始，可以使用 enumValues<T>() 和 enumValueOf<T>() 函数，以泛型的方式来访问枚举类中的常量：. [code lang=”kotlin”]enum class RGB ...

#44. 枚举类

从Kotlin 1.1开始，可以使用 enumValues<T>() 和 enumValueOf<T>() 函数以通用方式访问enum类中的常量：. enum class RGB { RED, GREEN, BLUE } inline fun <reified T ...

#45. Extension To The EnumUtils(Java) For Kotlin - Programmer ...

fun <T> getStringEnumValue(type: Class<T> , customerSort: Int): String where T : kotlin.Enum<T> , T : ExtensionEnum = getEnumList(type).let { it.map { it.

#46. Enum Reverse Lookup in Kotlin | jambit GmbH

The function associateBy() returns a map<K, T>. More precisely a LinkedHashMap where K is the enumeration value and T is our enumeration type.

#47. Kotlin enum default value

Jun 02, 2017 · Namely Kotlin enum can't override compareTo and things can get quite strange due to the ordering of initialization of enum elements.

#48. Enum Classes - 《Kotlin Language Guide v1.4.21》

Working with Enum Constants · enumclass RGB { RED, GREEN, BLUE } · inline fun <reified T :Enum<T>> printAllValues(){ · print(enumValues<T>().

#49. Enums | GraphQL Kotlin - Expedia Group Open Source

Converting a Java enum to a GraphQL Enum#. If you want to use Java enums from another package, but you don't want include everything from ...

#50. Kotlin Generic Function With Enum Constraint - Quabr

which I understand to mean I can't use companion object functions on generics. Is there any way to achieve what I want - converting a string to ...

#51. Enum (Java Platform SE 7 ) - Oracle Help Center

Returns the name of this enum constant, as contained in the declaration. static <T extends Enum<T>> T, valueOf(Class<T> enumType, String name).

#52. Kotlin Enum Recipes - Artur Dryomov

Enumerations are not so different. Don't scream in code! We don't have BASIC syntax constraints. enum class Fruit { ...

#53. Question Passing enum or object through an intent (the best ...

Use Kotlin Extension Functions. inline fun <reified T : Enum<T>> Intent.putExtra(enumVal: T, key: String? = T::class ...

#54. Kotlin枚举班_从零开始的教程世界 - CSDN博客

kotlin 枚举In this tutorial, we'll be looking into Kotlin Enum classes. ... If the value doesn't match with any of the constants, ...

#55. The Programmers Guide To Kotlin - Enums & Sealed Classes

This chapter is about the new features that Kotlin supports to make working with data within a program easier. It isn't about database or ...

#56. How to do reverse lookup enum constant by value in Kotlin

How to do reverse lookup enum constant by value in Kotlin ... T> , where K is the value of the enum constant and T is the actual constant ...

#57. 코틀린(Kotlin) 클래스(Class) : 열거 클래스 (Enum classes)

IntBinaryOperator enum class IntArithmetics : BinaryOperator<Int>, IntBinaryOperator { PLUS { override fun apply(t: Int, u: Int): Int = t + ...

#58. 如何在Kotlin 中调用具有不同上限的方法？

例如给定 Class<T> 我如何调用/调用需要 Class<T> where T : Enum<T> 的方法/构造函数？ fun <T : Any> handleAny(classOfT: Class<T>) { if (classOfT.

#59. Kotlinx Serialization Library - AhsenSaeed

... we'll apply serialization and deserialization to the kotlin enum classes ... Serializer doesn't know how to serialize the enum classes.

#60. [Solved] Effective Enums in Kotlin with reverse lookup? - Code ...

Porting this over to Kotlin with a simple enum leads me to code that looks ... null will obviously lead to null, and a caller shouldn't even try doing that.

#61. Kotlin enum string

values(): Array<EnumClass>. Feb 16, 2015 · inline fun <reified T : Enum<T>> valueOf(type: String): T? { return try { java. In this tutorial we ...

#62. Kotlin Enum - Stone Soup Programming

At their core, Kotlin enum classes are classes that are declared by ... In this way, the enum class in Kotlin isn't much different than the ...

#63. 枚举类· Kotin知识点难点归纳总结 - 看云

自Kotlin 1.1 起，可以使用 enumValues<T>() 与 enumValueOf<T>() 函数以泛型的方式访问枚举类中的常量: enum class RGB { RED, GREEN, BLUE } inline fun <reified T ...

#64. 如何在Kotlin中从字符串创建枚举？ - IT答乎

Kotlin 枚举类具有“静态”功能 valueOf ，用于按字符串获取枚举条目（例如Java枚举） ... inline fun <reified T : Enum<T>> valueOf(type: String): T?

#65. Kotlin enum value

Just like in Java, enum classes in Kotlin have synthetic methods allowing to list ... T : Enum < T > > enumValues (): Array < T > (Common source) Kotlin™ is ...

#66. Rust-like enums in Kotlin - Andrej's notes

Since enumerations are classes, they can define extra methods, but because the enum values are singletons, they can't be coupled with any ...

#67. List of Strongly-Typed Objects Acting Like Enum in Kotlin

Suppose you have a list of object instances (Kotlin's concept for singleton ... private constructor( private val list: MutableList<T> ) :.

#68. Kotlin 枚举类 - 术之多

Kotlin 中的枚举类具有合成方法，允许遍历定义的枚举常量，并通过其名称获取枚举 ... enum class RGB { RED, GREEN, BLUE }; inline fun <reified T ...

#69. Kotlin enum with parameters

The type parameter T is really T: Any?. Aug 20, 2021 · Advanced features of Kotlin enums. number and flags) != 0 } } To convert back, you can use bitwise OR ...

#70. Kotlin Enum Class - JournalDev

valueOf() is used to fetch an enum constant using a String as the argument. If the value doesn't match with any of the constants, a runtime exception would be ...

#71. kotlin 15 enum classes.docx - Course Hero

kotlin 15 enum classes.docx - Enum Classes in Kotlin In.. ... Some important points about enum classes in kotlin – Enum constants aren't just mere ...

#72. 反向查找在Kotlin中有效的枚举？ - ITranslater

interface Codified<out T : Serializable> { val code: T } enum class Alphabet(val value: Int) : Codified<Int> { A(1), B(2), C(3); override ...

#73. Enum.valueOf no Kotlin - java - ti-enxame.com

Existe uma maneira de fazer algo assim funcionar em Kotlin sem a reflexão?inline fun <reified T : kotlin.Enum<T>> safeValueOf(type: String?)

#74. Enums & Sealed Classes in Kotlin | When construct

If the value doesn't match with any of the constants, a runtime exception would be thrown. Each of the enum constants acts as separate instances of the class.

#75. Kotlin 枚举类 - 编程宝库- 技术改变世界

枚举常量用逗号分隔,每个枚举常量都是一个对象。enum class Color{ RED,BLACK,BLUE ... 自Kotlin 1.1 起，可以使用 enumValues<T>() 和 enumValueOf<T>() 函数以泛型的 ...

#76. Kotlin——中级篇（五）：枚举类（Enum）、接口类（Interface ...

提供了 values() 和 valueOf() 方法来检测指定的名称与枚举类中定义的任何枚举常量是否匹配。 自 Kotlin 1.1 起，可以使用 enumValues<T>() 和 ...

#77. Kotlin-17.枚举类(enum class) - 简书

values(): Array<EnumClass> 自Kotlin 1.1起,可用enumValues<T>()和enumValueOf<T>() 以泛型方式访问枚举常量: enum class RGB { RED, GREEN, BLUE } ...

#78. Enum yang efektif di Kotlin dengan pencarian terbalik?

Porting ini ke Kotlin dengan enum sederhana membawaku ke kode yang terlihat seperti ini: ... open class EnumCompanion<T, V>(private val valueMap: Map<T, ...

#79. Kotlin: enumeration and class reflection - CodeRanch

Kotlin : enumeration and class reflection ... Enum.ONE to ClassOne:: class .java ... https://coderanch.com/t/730886/filler-advertising.

#80. Kotlin-12-枚举类

Kotlin 枚举类. ... enum class Color{ RED,BLACK,BLUE,GREEN,WHITE } ... enum class RGB { RED, GREEN, BLUE } inline fun <reified T : Enum<T>> ...

#81. Forward compatible enums in Kotlin | Bright Inventions

A few years ago Adam outlined 8 steps to keep your API sane in his blog post which I really recommend if you haven't seen it yet.

#82. Chapter 2. Kotlin basics - Kotlin in Action

Declaring functions, variables, classes, enums, and properties ... This wouldn't work for Kotlin, because it lets you omit the types from many variable ...

#83. 初めてkotlinを触る - Enum Classes - Qiita

初めてkotlinを触る - Enum Classes. JavaKotlinenum. 概要. 基礎; enumValuesとenumValueOf(); 各Enum定数はそれ自身の無名クラスを宣言することも ...

#84. Kotlin扩展为下一个枚举值没有反射

我写了一个Kotlin扩展，为枚举值添加 next() 。 但有没有更好的方法来做到这一点？ fun <T : Enum<*>> T.next(): T { val values = this::class.java.

#85. 如何使用Kotlin enum与Retrofit？ | 经验摘录

Drake 11 enums android gson kotlin retrofit2 ... JsonSerializer<T> where T : Enum<T>, T : HasValue { private var values: Map<String, T>?

#86. kotlin基础枚举_mb5fdb13b347132的技术博客

自Kotlin 1.1 起，可以使用enumValues<T>() 和enumValueOf<T>() 函数以泛型的方式访问枚举类中的常量：. 1. enum class RGB { RED, GREEN, ...

#87. Kotlin enum override valueof

To define Enums, we have to use the enum class keyword in kotlin, enum ... Describable<T : Enum<T>> { val desc: String } enum class ENUMD(override val desc: ...

#88. Kotlin 五泛型枚举

与Java 一样，Kotlin 也提供泛型，为类型安全提供保证，消除类型强转的烦恼。 声明一个泛型类: class Box<T>(t: T) { var value = t }.

#89. Moving forward with Kotlin #2: Inheritance - ProAndroidDev

Most of the time we declare types that don't require inheritance. ... With Kotlin, on the other hand, enums are closer to classes, ...

#90. Enum Classes - Kotlin Programming Language - 极思路

Since Kotlin 1.1, it's possible to access the constants in an enum class in a generic way, using the enumValues<T>() and enumValueOf<T>() functions:.

#91. Kotlin-17.枚举类(enum class) - 简书

官方文档: http://kotlinlang.org/docs/reference/enum-classes.html 1. ... 自Kotlin 1.1起,可用enumValues<T>()和enumValueOf<T>() 以泛型方式访问 ...

#92. Kotlin enum override name - Lifepage Group

The “name” property is final and can't be overriden. valueOf() is used to fetch an enum constant using a String as the argument. ¶. Kotlin 语言之 enum 关键 ...

#93. Kotlin学习笔记之11 枚举类 - 掘金

inline fun <reified T : Enum<T>> printAllValues() { print(enumValues<T>().joinToString { it.name }) } fun main(args: Array<String>) ...

#94. Kotlin-17.枚举类(enum class) - lioil.win - 关于

valueOf(value: String): EnumClass //获取枚举常量列表RGB.values(): Array<EnumClass> 自Kotlin 1.1起,可用enumValues<T>()和enumValueOf<T>() 以泛 ...

#95. Kotlin：如何检查枚举是否包含给定的字符串而不会弄乱异常？

不能在Kotlin 1.0中创建独立于JVM的解决方案，但可以使用reified type parameters在Kotlin 1.1中创建。 科特林1.1 /** * Returns `true` if enum T ...

#96. Android-Kotlin数据类与密封类，枚举，泛型基本练习及相关 ...

Data Classes - Kotlin Programming Language ... 为Int类型// T: List<T>- 表示添加了约束为List类型class Fanxa<T:List<Int>>(t: T){ fun add(a:T, ...

#97. kotlin-docs - Algoritmo e Programação - 26 - Passei Direto

Kotlin provides so called star-projection syntax for this: For Foo<out T : TUpper> ... Enum entries cannot contain nested types other than inner classes ...

#98. Sealed classes in Kotlin: enums with super-powers - Antonio ...

Sealed classes in Kotlin are another new concept we didn't have in Java, and open another new world of possibilities. A sealed class allows you to represent ...

#99. Kotlin: Comparing enums - Code Review Stack Exchange

internal class Element { enum class Type { FIRE { override val ... Namely Kotlin enum can't override compareTo and things can get quite ...