Mixed language framework
问题 I have a framework (let's call it MyKit) written in Objective-C that I'm extending with some Swift classes. I'm trying to get my head around it using this documentation: https://developer.apple.com/library/ios/documentation/Swift/Conceptual/BuildingCocoaApps/MixandMatch.html#//apple_ref/doc/uid/TP40014216-CH10-XID_77 As far as I understand, I'm not supposed to have a bridging header class, and instead put all my includes in the umbrella header file (that I understand to be ). So I write in