TIOBE’s latest ranking shows that Swift’s use is outpacing the aging language it is meant to replace, Objective-C. However, multiple programming-language rankings (including analyst firm Redmonk’s) show that Objective-C is managing to hold on, probably because there’s a lot of legacy code out there that must be maintained (shifting everything to Swift is a time- and money-consuming process that must be done carefully).
Apple debuted the Swift programming language in 2014, and it quickly grabbed the interest of developers everywhere. Over the past few years, it’s birthed a whole sub-industry of merchandise, Udemy classes, and even bespoke conferences dedicated to the language—not exactly surprising, when you consider how the language is becoming the best path for building macOS and iOS apps.
https://insights.dice.com/2020/12/11/is-2021-when-swift-programming-language-goes-more-mainstream/
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