In the latest TIOBE Index, Swift was ranked 10th, up four places from March 2016. As CultofMac notes, the nine programming languages ranked above it are at least two decades old, so breaking into the top 10 is a feat more impressive than it sounds. Swift was only introduced by Apple in 2014, replacing Objective-C as an easier-to-learn language.
Apple has promoted Swift as ideal for kids who are keen to code, with its gentle learning curve demonstrated in Swift Playgrounds, an app that teaches children how to use the language. Apple has been updating and refining Swift since its debut, and is set to unveil Swift 3.1 this spring.
The TIOBE Index is calculated using search engine data to approximate the popularity of programming languages within online coding communities. Earlier this year, a quarterly study revealed that Swift had become one of the most sought-after freelance developer skills among employers.