Haha, I read The Joy of Clojure way back in 2013 and conflated the different reference types with STM. So thanks for mentioning that, I always thought it weird that you'd need STM for vars and atoms too.
That said, I have never used a ref, nor seen one in use outside of a demo blogpost.
That said, I have never used a ref, nor seen one in use outside of a demo blogpost.