This is the most technically complicated of the C family in our top programming languages, but can actually be easier to learn. It’s considered a high-level language, because it doesn’t compile into Assembly, but to byte-code. (It runs on a virtual machine, which allocates the memory for you.)
It’s commonly used to create internal applications for businesses, so developers will likely find themselves making bespoke software. Perhaps this is why we don’t see as much demand these days, as businesses move to more web apps and cloud-based services.
Swift is the programming language that is used to develop iOS applications. iOS-based devices are becoming increasingly popular. Apple iPhone, for instance, has captured a significant market share and is giving a tough competition to Android. Therefore, those who want to serve this community can learn Swift programming.