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Kotlin's data class construct defines classes whose primary purpose is storing data, similar Java's record types. Like Java's record types, the construct is similar to normal classes except that the key methods equals, hashCode and toString are automatically generated from the class properties. Unlike Java's records, data classes are open for ...
In Kotlin, an ADT may be defined with: [20] sealed class Tree {object Empty: Tree data class Node (val value: Int, val left: Tree, val right: Tree): Tree ()} And ...
Data processing, business No No No No No No Array-oriented, tacit Unknown Kotlin: Application, mobile development, server-side, client-side, web Yes Yes Yes Yes Yes Yes [31] De facto standard via Kotlin Language Specification Ksh: Shell, scripting: Yes Yes No Yes No No Several variants, custom programmable, dynamic loadable modules Optionally ...
Kotlin: No Lazy delegation [78] and Sequence [79] Static Yes No Yes No Yes 2011 Swift: No No Static Yes Yes Yes No Swift uses Automatic Reference Counting, which differs from tracing garbage collection but is designed to provide similar benefits with better performance. 2014 Julia: No No [80] Dynamic [81] Yes [81] No Partial [81]? Yes 2012 ...
In computer programming, especially functional programming and type theory, an algebraic data type (ADT) is a kind of composite data type, i.e., a data type formed by combining other types. Two common classes of algebraic types are product types (i.e., tuples , and records ) and sum types (i.e., tagged or disjoint unions , coproduct types or ...
In C#, a class is a reference type while a struct (concept derived from the struct in C language) is a value type. [5] Hence an instance derived from a class definition is an object while an instance derived from a struct definition is said to be a value object (to be precise a struct can be made immutable to represent a value object declaring attributes as readonly [6]).
Responsibility-driven design defines classes in terms of a contract, that is, a class should be defined around a responsibility and the information that it shares. This is contrasted by Wirfs-Brock and Wilkerson with data-driven design, where classes are defined around the data-structures that must be held. The authors hold that responsibility ...
In software, a data access object (DAO) is a pattern that provides an abstract interface to some type of database or other persistence mechanism. By mapping application calls to the persistence layer, the DAO provides data operations without exposing database details. This isolation supports the single responsibility principle.