noob question: If I've got a nested map structure... like so : {:top {:name "blah" :data {:entry1 "asdf" :entry2 "asdf"}}} Is there a way of accessing the entry2 value like in other languages...? e.g. in python it'll accessed by <mapname>[top][data][entry2]. The clojure notation that I've figured out so far is a lot of nested :keyname calls to the map... (:entry2 (:data (:top <mapname>)))

the "thread first", -> macro is commonly used for this

(-> my-map :top :data :entry2)

Is there anything better than threading? This is why I was investigating the double colon notation, hoping that it'll help with resolving nested maps... but thanks for your help!

better how?

<mapname>[top][data][entry2] and (-> my-map :top :data :entry2) look very, very similar to me.

ok

I don't know how

just asking

(and I prefer the latter due to "less syntax noise")

😄

I think this is just a matter of familiarity. The more you use Clojure, the more natural this will seem to be (and the more ugly/verbose other languages will look).

sure

thanks for that!!

It's definitely one of those things where I thought the threading macro was this really weird thing when I first saw clojure, and now I get really annoyed when I try to write js or python 🤷

it is definitely hard to wrap my head around the threading macro as my head is still thinking in C/python

practice makes perfect ... I guess

yea, I remember the threading macros being pretty jarring at first, but they grow on you after a while.

They're a little more flexible than the bracket syntax and they tend to work more universally in clojure since almost everything is immutable and returns a value. You don't have to go out of your way to write your api to return its value: eg. builder().addThing("asdf").timeout(10).execute().after(cleanup)

Are there libraries I might want to look if I want to take a video like say an .mp4 file and produce pixelized colour data of the frame by frame images

What's the recommended way to programmatically generate maps/edn that include custom tagged literals? Something like this:

{:db-spec {:host    #aws/ssm "/app/_/db/env/host"
           :db-name #aws/ssm "/app/_/db/env/db-name"
           :user    #aws/ssm "/app/_/db/env/username"
           :pass    #aws/ssm "/app/_/db/env/password"}}

I would like to practice creating some programs in clojure... is there a puzzle book which forces one to think in clojure ways? ... I know... I am silly that way... 😁

Hello Hello everyone ! Is there a "clean" way to use a higher version of java library that is also a transient dependency of another package ? (using the newer version breaks the package)

What's the best way to check whether there's something in an atom in a non-blocking style? (deref a 100 :timeout)?

I have two futures running at the same time. Currently (as a hack) I use (Thread/sleep n) so the main thread wouldn't quit, which is what happens without it, the main thread quits immediately without the futures actually ever finishing. How do I I wait for both of these futures to finish before quiting?

(run! deref [fut1 fut2])

That was a really interesting question, but it's gone now 😕

effectively no. (length of function names). It seems classfile names are limited to 65535 characters. So the munged namespace and function name cannot exceed that.

For posterity: someone asked what is the maximum length of a function name

I couldn't find a limit either, to speak of. It seems likely that you'll run into file name length limitations before anything else.