在使用valueOf()方法的时候,如果定义的所有的枚举常量都没有匹配到给定的名称,则将抛出IllegalArgumentException。 从Kotlin1.1开始,可以通过泛型方法获取枚举类的常量,使用enumValues<T>()和enumValueOf<T>()函数: enumclassRGB{RED,GREEN,BLUE}inlinefun<reifiedT:Enum<T>>printAllValues(){print(enumValues<T>(...
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...
15 using inner classes in Java - enum 76 Why can't I create an enum in an inner class in Java? 1 Java enum and nested classes 13 Is there a way to nest an enum within a data class in Kotlin? 1 Kotlin: Access nested enum class from java 2 Nested class in inner class 1 ...
In Kotlin, sealed classes are a generalization of enums, that allows you to retain state in each value. All derived classes of a sealed class must be known up-front and declared in the same file. The advantage compared to interfaces is that you can limit the sealed class to a fixed set...
然而,我认为一个更为kotlin-y的方法是返回一个List<String>,因为这是内置的Array.map扩展函数返回。
Add a Class from the Business Class Library 从业务类库添加类 (XPO) 2019-12-11 11:27 −In this lesson, you will learn how to use business classes from the Business Class Library as is. For this purpose, you will add the Event business cl... code first life 0 241 <1>...
Lines 74 to 87 in 5aabb2e public void filter(final MethodNode methodNode, final IFilterContext context, final IFilterOutput output) { if (!KotlinGeneratedFilter.isKotlinClass(context)) { return; } if (!context.getClassAnnotations().contains("Lkotlin/jvm/JvmInline;")) { return; ...
Kotlin Kotlin also has not one but two enum-esque systems: Enums and Sealed Classes. The difference between them is subtle and confusing. Enums are a class that inherits from an Enum class implicitly. enum class Suit { HEARTS, DIAMONDS, CLUBS, SPADES } Each enum value is technically a "...
Last modified: 11 September 2024 Reports calls from Kotlin tovalues()method in enum classes that can be replaced withentriesproperty read. Use ofEnum.entriesmay improve performance of your code. The quick-fix replacesvalues()withentries.
Enum Inside ClassesWe can also define enum types inside a class and use them as data members for the class. In the code below, we have a Student class with a name field. Let's define the StudentResult enum inside this class. We will also this enum type for a data member of the ...