SLIME setup for both Common Lisp and Clojure development
I've been having trouble with setting up SLIME to work with both Clojure and Common Lisp. Most Clojure devs tend to use the stripped down SLIME available via ELPA that is frozen for Clojure compatibility. I, however, do a lot of Common Lisp hacking as well and I generally use the SLIME CVS version (obtained via QuickLisp). There are some well known problems with the swank implementation for Clojur
Best Practice for globals in clojure, (refs vs alter-var-root)?
I've found myself using the following idiom lately in clojure code. (def *some-global-var* (ref {})) (defn get-global-var [] @*global-var*) (defn update-global-var [val] (dosync (ref-set *global-var* val))) Most of the time this isn't even multi-threaded code that might need the transactional semantics that refs give you. It just feels like refs are for more than threaded code but basically for an
How can I run a .clj Clojure file I created?
FWIW, I'm interpreting the question here as specifically asking how to run a single file, like a script, versus as a part of a compiled project. Obviously though, there's a relationship between how and why you would want to run a single file, and how you would want to build a full project, so I weigh that in some as well. Best choice: the clj tooling Docs are here: https://clojure.org/guides/deps_
How to reload a clojure file in REPL
What is the preferred way of reloading functions defined in a Clojure file without having to restart the REPL. Right now, in order to use the updated file I have to: edit src/foo/bar.clj close the REPL open the REPL (load-file "src/foo/bar.clj") (use 'foo.bar) In addition, (use 'foo.bar :reload-all) does not result in required effect, which is evaluating the modified bodies of functions and return
Clojure: Convert hash-maps key strings to keywords?
I'm pulling data from Redis using Aleph: (apply hash-map @(@r [:hgetall (key-medication id)])) The problem is this data comes back with strings for keys, for ex: ({"name" "Tylenol", "how" "instructions"}) When I need it to be: ({:name "Tylenol", :how "instructions}) I was previously creating a new map via: { :name (m "name"), :how (m "how")} But this is inefficient for a large amount of keys. If t
Can someone explain Clojure Transducers to me in Simple terms?
I have tried reading up on this but I still don't understand the value of them or what they replace. And do they make my code shorter, more understandable or what? Update A lot of people posted answers, but it would be nice to see examples of with and without transducers for something very simple, which even an idiot like me can understand. Unless of course transducers need a certain high level of
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