![]() Use optionals when you might have an instance to return from a function, or you might not. You can even write concurrent code with simple, built-in keywords that define asynchronous behavior, making your code more readable and less error-prone. Memory is managed automatically using tight, deterministic reference counting, keeping memory usage to a minimum without the overhead of garbage collection. To best support international languages and emoji, Strings are Unicode-correct and use a UTF-8 based encoding to optimize performance for a wide-variety of use cases. Inferred types make code cleaner and less prone to mistakes, while modules eliminate headers and provide namespaces. The most popular languages for use on the macOS platform is Objective-C which could be thought of as Mac OS X's 'native language' since the Mac OS X libraries, or 'frameworks', all have an Objective-C interface. Even better, you don’t even need to type semi-colons. Mac OS X applications are developed using Objective-C though there are other possible programming languages that could be used. Named parameters are expressed in a clean syntax that makes APIs in Swift even easier to read and maintain. ![]() ![]() Mac OS X, at the kernel layer, is mostly an older, free operating system. Swift is the result of the latest research on programming languages, combined with decades of experience building Apple platforms. Kernel written in C, some parts in assembly.
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