In this episode: the Swift style guide marches on to formal review, we pick out our favorite events at iOSCon, and discuss whether it's important for iOS developers to be skilled in more than one platform.- WWDC ticket winners – who got lucky? (Spoiler: it was Paul.) (And not Sean.)- SE-0250: Swift Code Style Guidelines and Formatter – https://github.com/apple/swift-evolution/blob/master/proposals/0250-swift-style-guide-and-formatter.md- SE-0249: Key Path Expressions as Functions – https://github.com/apple/swift-evolution/blob/master/proposals/0249-key-path-literal-function-expressions.md- Paul’s first pick: Gwendolyn Weston's talk "The Business Case For Your Code" – https://skillsmatter.com/skillscasts/11749-keynote-the-business-case-for-your-code- Gwen's book, Intentional Friendships: https://gumroad.com/l/friendsyay- Paul’s second pick: Being able to do some coding with Connie, a young coder, at iOSCon.- Sean’s first pick: Niamh Power's talk "Better Together" – https://skillsmatter.com/skillscasts/13385-better-together - Sean's second pick: Getting to attend his first major conference and meeting lots of other Swift developers.- Open ballot: Should mobile developers be skilled in more than one platform, e.g. Android or React as well as iOS?Thanks to Skillsmatter in London for hosting our first live podcast episode!