Swift is a multi-paradigm, compiledprogramming language created for iOS, OS X, watchOS and tvOS development by Apple Inc. Swift is designed to work with Apple's Cocoa and Cocoa Touchframeworks and the large body of existing Objective-C code written for Apple products. Swift is intended to be more resilient to erroneous code ("safer") than Objective-C and also more concise. It is built with the LLVMcompiler framework included in Xcode 6 and later and uses the Objective-C runtime, which allows C, Objective-C, C++ and Swift code to run within a single program.