I want to call several Java methods and:

((juxt #(.getYear %) #(.getMonthValue %) #(.getDayOfMonth %) )

((juxt .getYear .getMonthValue .getDayOfMont))

right, you can use memfn but it's not worth it IMO

#() is your best choice

If I had a lot of code that calls juxt with java methods, would this be a valid reason to write a macro that behaves like the original juxt?

well you don’t need to make a macro… I think

Or is it possible to do that with a function?

(defn javajuxt [& fns]
  (apply juxt (map memfn fns))]))

I have no idea if that’ll work 😅

memfn is a macro, so it wouldn’t work in combination with map

aaah.. ok that won’t work then.

you have to be a little careful around this kind of thing to avoid reflection

but really, it's probably the most straightforward to just do what you're doing

it'd have to be a macro since .foo is not a first class thing but it's syntax

but... really #() is not bad :)

if you really dislike it would wrapping the ones that you use a lot with clojure fns work? (defn get-year [obj] (.getYear obj))

people have written wrappers that do this kind of thing across big chunks of api but you're just adding layers and layers have cost

Cool, that’s good to keep in mind. Thanks!

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anyone familiar with how to deal with calling io/resource on a resource directory?

closest I’ve come is doing (io/file (str (io/resourece "path")))

but the str call returns a path prefixed with file: that io/file doesn’t like, I could regex that bit out of the string but that seems bad

ignore all code and say what you want to happen. "i want to get all the files in my resources directory", "i need the edn from resources/foo.edn" or something like that

right on, you nailed it really “i want to get all the files in a resources sub-directory”

🌊👋 I'm new to cljs, so i've been working on a template fork for others and myself down the road, that is currently in a protect-your-eyes state, so any feedback would be appreciated 😅 https://github.com/teachtyler/Fraction

i'm not finding any good way to do this. I believe just like java packages, in a jar there is no hierarchy or container. just "addresses" that share a prefix. "resources/foo/bar" and "resources/foo/quux". we can "see" a hierarchy but there's no node containing the two

directories are not a resource thing, they're a file thing

the resource returns the path which is really all I need, but it’s got this file: prefix which I can just remove

io/file doesn’t like that type of file url

you pass the path to resource - why use resource at all?

resources are a generic feature and classloaders can provide them from an open set of "places"

I only know the path relative to the resources directory, so I pass the relative path to io/resource

using io/resource shields the differences between my local machine and the jar in a docker image

it does, but you give up the concept of directories or "all things in a directory"

you just have resources, which have paths, no notion of resource container

you're loading resources from the classpath, which includes all the jars as well

if you know you'll have files, use just a path to make files. If you lose the filesystem because of packaging into a jar, returns a url which is handy as well: (slurp (io/resource "my-thing")) will yield the contents of the file

Hi guys, I want to use reveal with leiningen, and for me it was not straightforward. As I'm not a leiningen expert, could you all check my proposal to @vlaaad. Reveal need to launch a repl function, I used the :repl-options { :init ...} option . @vlaaad, I did not find how to contribute directly to your website, a few lines in that readme I suggest you add in your tutorial: https://gitlab.com/caumond/reveal-lein-tuto

I am trying to add web-sockets into an application I am working on.  My general understanding of WS is that Client A establishes a connection to Server A and they can send messages to each other. The issue I am seeing with this type of architecture is that we have multiple stateless servers.  So if Server B receives a request to process some information, that Client A is expecting to get a notification via WS, how will Server B Push out a message to Client A if Server B has no connection with Client A.  Sticky sessions doesn’t seem like the solution since its another system that is making requests to our API which would trigger a notification message sent to the connected client. And any node can potentially receive that request.  Is there a way a server can ask “Hey, who is connected to client Y?” And then have the server that responds with “Hey, I am connected to that client!” Send out the notification via WS?

did that at the last job. broadcast to the nodes please let user zzz know this message. one (and only one) of them had a connection open and fulfilled it. the rest looked, saw that client wasn't connected and just kept humming

(def custom-formatter (tf/formatter "yyyyMMddHHmm"))
  (l/to-local-date-time (tf/parse custom-formatter "202011141555")) >> works
  ; "Jul 12, 2020, 5:03:24 PM GMT+2"
  (def custom-eg-google (tf/formatter "MM dd, yyyy, hh:mm:ss aa zz"))
  (tf/parse custom-eg-google  "Jul 12, 2020, 5:03:24 PM GMT+2") >> not valid

What do I wrong with clj-time? at custom formatter “”MM dd, yyyy, hh:mm:ss aa zz”

I would expect something around the timezone maybe. But thats a guess at best

Yes, i tried in several way. I read yoda time documentation about, but not clear (no example for this case).

My eye fell on this piece of doc of Joda: > Zone names: Time zone names (‘z’) cannot be parsed. (Here: https://www.joda.org/joda-time/key_format.html )

I found a few example on the Github [not exact but good starter points], maybe first I check before I drop here the question.

@sb Joda Time and clj-time are both deprecated, in favor of using Java Time (and, possibly, a Clojure wrapper library). Just FYI.