Apple introduced a new computer language last year called Swift, and while the announcement largely flew under the radar, a number of programmers attending this week’s WWDC have spent the last year writing apps that use Swift. “Red Monk, a firm that has been doing regular rankings of programming languages for the last five years, describes the language’s growth as ‘essentially unprecedented,’” notes Bloomberg. “Just seven months after its inception, Swift had become the 22nd most popular language out of the hundreds of major languages that exist.” Developers consistently give Swift high marks for safety, modernity and expressiveness.