Swift

Swift is a, ,  developed by Apple for iOS, iPadOS, macOS, tvOS, watchOS, Linux, and  development.

History
Swift was first announced on June 2, 2014 during the keynote event of the 2014 Worldwide Developers Conference at Moscone Center West in San Francisco.

Description
Swift is designed to work with Apple's Cocoa and Cocoa Touch frameworks and the large body of existing Objective-C code written for Apple products. It is built with the open source compiler framework and has been included in Xcode since version 6, released in 2014. On Apple platforms, it uses the Objective-C runtime library which allows C, Objective-C, and Swift code to run within one program.