Episode 139 of The Talk Show with John Gruber:

Apple senior vice president of software engineering Craig Federighi joins the show for a wide-ranging half-hour discussion about Swift — Apple’s new programming language that just went open source.

Next, John Siracusa returns to the show to follow up on Federighi’s segment on Swift. Other topics include Apple’s new Smart Battery Case for the iPhone 6/6S, and our mutual (and perhaps futile) desire to head into this week’s premiere of Star Wars: The Force Awakens knowing as few spoilers as possible.

A great episode of The Talk Show, ready for your morning (or evening) commute. It is fantastic (and kind of amazing) to hear an Apple Executive discuss what can be a deeply technical topic, outside of WWDC. There’s also a transcript of the Federighi segment for those of you who would prefer reading the discussion.