For those near Philadelphia (with [ahem!] nothing to do on the evening of Valentine’s Day), @danboykis of Chariot Solutions will be speaking on “Transducers: Decoupling Transformation”: https://www.meetup.com/Clojadelphia/events/246271729/ Update: I understand the date is being changed, perhaps to the 21st. Apparently attendance at a meetup on Valentine’s Day might lead to unwanted decoupling. I’ll keep you posted.

And for those of you in or around London, Mr. @cemerick is talking about spatial data structures at PWL London tomorrow night https://www.meetup.com/Papers-We-Love-London/events/246935780/ (video of the talk will be available here https://www.youtube.com/channel/UCEYe-1uDIkjPtuH_qhoybnA)