Filmed at https://2018.dotswift.io on January 29th in Paris. More talks on https://dotconferences.com/talks Objective-C and Swift are both widely used by developers. Apple went into a lot of effort to “bridge” those two languages. The problems arise when there is no equal notion in Objective-C for what you are trying to express in Swift. Guy showcases tips on ways to get around the unbridgeable features.