Kotlin check if object is enum. enumEntries .
Kotlin check if object is enum. Introduction to the Problem Feb 16, 2015 · If you want to create an enum constant from one of its properties, instead of the name, this funny code does a pretty decent job: import kotlin. java in Kotlin. Jun 23, 2025 · This feature allows you to omit the enum class name when the expected type is known, such as in when expressions or when assigning to a typed variable. 0 Inheritors Jan 24, 2024 · Before delving into the details of using enums with the when () expression, let’s briefly understand what enums are and how they work in Kotlin. Compares this object with the specified object for order. Enums, short for enumerations, allow us to define a set of named constant values, creating a type-safe way to represent a set of related values: enum class Color { RED, GREEN, BLUE } Copy In this example, Color is an enum class with three values Aug 5, 2025 · Conditions and loops Edit page 05 August 2025 Kotlin gives you flexible tools to control your program's flow. For more information, see Preview of context-sensitive resolution or the related KEEP proposal. We can iterate through enum instances using the values () function. Sep 20, 2023 · Returns true if value is an instance of this class on a given platform. I need to dodge Enums though, so I need a way to check if a parameter is an Enum. This means that the expression someClass. isInstance(someValue) checks whether someValue is an instance of someClass. Since Kotlin 1. isEnum the result is false Is my approach incorrect? Sep 4, 2022 · Learn how to use Kotlin enum with string values. In this tutorial, we’ll explore how to convert a string into an enum object. In Mar 26, 2025 · We can obtain an object’s Class object through myObject::class. Each constant is an object, meaning they can have properties and methods, these are enums and are useful for representing elements that are fixed (for example days of the week) and don’t change. I have a class StarRating with an Enum called Shape inside of it. Use if, when, and loops to define clear, expressive logic for your conditions. Each value is like an object, and you cannot create new instances of them. Apr 22, 2025 · Discover what is the Kotlin enum class, how it enhances type safety beyond Java enums, and when to use it instead of sealed classes or constants. Nov 6, 2024 · Type checks and casts Edit page 06 November 2024 In Kotlin, you can perform type checks to check the type of an object at runtime. type. Apr 4, 2022 · i am expecting some string value and i need to find, if i have corresponding enum value defined. We can use these classes when the number of objects is fixed, and all the objects exhibit specific behavior, each in its own way. When I check if this KParameter is an Enum like this: val isEnum = param. Apr 7, 2025 · In this article, we’ve explored various ways to check if an enum value contains a given string in Kotlin. See the Kotlin language documentation for more information on enum classes. Jul 12, 2025 · An enum (short for enumeration) is a special type in Kotlin that holds a fixed set of constant values. javaClass. Returns zero if this object is equal to the specified other object, a negative number if it's less than other, or a positive number if it's greater than other. 0 Inheritors Jun 13, 2022 · Hello friends, I am building an offline tool and I need to scan our Data Classes for default values. We will learn two different ways how to create Kotlin enum from string values and how to search for Kotlin enum by string value. To learn specifically about generics type checks and casts, for example List<T>, Map<K,V>, see Generics type checks and casts. Mar 19, 2024 · In Kotlin, the ordinal property of an enum refers to its implicit position within its class of declaration. Mar 19, 2024 · Kotlin also offers the generalized version of an enum class through sealed classes. enums. Next, let’s create a test to check if we can get the expected type name via the Class object: Mar 19, 2024 · Enums in Kotlin make handling constants type-safe, less error-prone, and self-documented. my enum value is enum class Status { Created, Updated } and what i want to achieve in this func The common base class of all enum classes. The common base class of all enum classes. As a result, there is a one-to-one mapping between an enum and its ordinal value. Type casts enable you to convert objects to a different type. 2. enumEntries. Mar 19, 2024 · A straightforward idea to solve the problem is to walk through the enum instances and find the one whose property equals the given value. May 28, 2024 · In Kotlin, an enum (short for enumerator) is a special kind of predefined Kotlin data type used to store and represent a fixed set of named constant values, often simply referred to as constants. By having multiple ways to achieve the same result, we have the flexibility to choose the one that suits our needs best. 2qy twjmpn 7myzqc vf0 lyv ayyt ojmacy n81d3n es mwyc