Swift unless : 1/ you're working on a very big project ( 3/4 ios dev working on the app for a year full time) And 2/ all the members of your team are already fl

Swift unless : 1/ you're working on a very big project ( 3/4 ios dev working on the app for a year full time) And 2/ all the members of your team are already fluent with objc Then, it's debatable, whether you bet on the swift tool suite to fix all the compiler crashes and compile time issues before your code base reaches the critical point.