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In object-oriented programming, an interface or protocol type [a] is a data type that acts as an abstraction of a class. It describes a set of method signatures , the implementations of which may be provided by multiple classes that are otherwise not necessarily related to each other. [ 1 ]
The use of interfaces to allow disparate teams to collaborate raises the question of how interface changes happen in interface-based programming. The problem is that if an interface is changed, e.g. by adding a new method, old code written to implement the interface will no longer compile – and in the case of dynamically loaded or linked plugins, will either fail to load or link, or crash at ...
An interface in the Java programming language is an abstract type that is used to declare a behavior that classes must implement. They are similar to protocols.Interfaces are declared using the interface keyword, and may only contain method signature and constant declarations (variable declarations that are declared to be both static and final).
An object which is of an interface type is also of another type, much like C++ objects being simultaneously of a base and derived class. The design of Go interfaces was inspired by protocols from the Smalltalk programming language. [75] Multiple sources use the term duck typing when describing Go interfaces.
Go (Golang) Haskell – supports concurrent, distributed, and parallel programming across multiple machines; Java. Join Java – concurrent language based on Java; X10; Julia; Joule – dataflow language, communicates by message passing; LabVIEW; Limbo – relative of Alef, used for systems programming in Inferno (operating system)
Google Web Toolkit (GWT), in which Java is compiled to JavaScript, has an FFI named JSNI which allows Java source code to call arbitrary JavaScript functions, and for JavaScript to call back into Java. Haskell; Java Native Interface (JNI), which provides an interface between Java and C/C++, the preferred systems languages on most systems where ...
Fyne is a free and open-source cross-platform widget toolkit for creating graphical user interfaces (GUIs) across desktop and mobile platforms. It is designed to enable developers to build applications that run on multiple desktop and mobile platforms/versions from a single code base. [2]
Due to the C++ language not having a dedicated keyword to declare interfaces, the following C++ example uses inheritance from a pure abstract base class. For most purposes, this is functionally equivalent to the interfaces provided in other languages, such as Java [4]: 87 and C#. [5]: 144