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This strategy has been used by ActionScript, C#, D, Java, Nemerle, Object Pascal, Objective-C, Smalltalk, Swift and PHP. [13] All these languages allow classes to implement multiple protocols. Moreover, Ada, C#, Java, Object Pascal, Objective-C, Swift and PHP allow multiple-inheritance of interfaces (called protocols in Objective-C and Swift ...
AppKit comprises a collection of Objective-C classes and protocols that can be used to build an application in OpenStep/Cocoa. These classes can also be used in Swift through its Objective-C bridge. Xcode has built-in functionality for developing a Cocoa application using AppKit, including the ability to visually design user interfaces with ...
Cocoa is Apple's native object-oriented application programming interface (API) for its desktop operating system macOS.. Cocoa consists of the Foundation Kit, Application Kit, and Core Data frameworks, as included by the Cocoa.h header file, and the libraries and frameworks included by those, such as the C standard library and the Objective-C runtime.
The converse is not true: a Swift class cannot be subclassed in Objective-C. [97] To aid development of such programs, and the re-use of extant code, Xcode 6 and higher offers a semi-automated system that builds and maintains a bridging header to expose Objective-C code to Swift.
Similar bridging technologies, often with JavaScript on one side, are common on various platforms. One example is JS bridge for the Android OS written as an example. [13] The term is also sometimes used to describe object-relational mapping systems, which bridge the divide between the SQL database world and modern object programming languages.
Objective-C is a high-level general-purpose, object-oriented programming language that adds Smalltalk-style message passing (messaging) to the C [3] programming language. . Originally developed by Brad Cox and Tom Love in the early 1980s, it was selected by NeXT for its NeXTSTEP operatin
The Foundation Kit, or just Foundation for short, is an Objective-C framework in the OpenStep specification described by NeXT Computer, Inc.. It provides basic classes such as wrapper classes and data structure classes. This framework uses the prefix NS (for NeXTSTEP [1]). It is also part of Cocoa and of the Swift standard library.
Internally, Core Foundation forms the base of the types in the Objective-C standard library and the Carbon API. [ 1 ] The most prevalent use of Core Foundation is for passing its own primitive types for data, including raw bytes , Unicode strings , numbers , calendar dates , and UUIDs , as well as collections such as arrays , sets , and ...