Fast Tensors in Clojure - a Sneak Peek

I hope that many Clojurists are wondering about the progress of the books that I'm writing: "Where are the new chapters?" "I'd like new chapters, please!" (I mean: I hope you're saying that. It means that you care!) There's a lot going on behind the scenes, since I am not only writing the books; at the same time I have to create the software to write about. I call it Deep Diamond, and here's a sneak peek of some basic things from my trusty REPL. If you've ever used Neanderthal (), you already expect this to be as straightforward as creating any plain Clojure structure.