Using kondo to clean my project a bit, I get quite a bit of missing else warnings when using if. Is there a more idiomatic way to only conditionally do something?

Use “when”

yes, makes sense, harder to make errors when adding additional statements, since it's an inplicit do. thanks

Stuart Sierra’s opinion piece on this subject: https://stuartsierra.com/2015/06/16/clojure-donts-single-branch-if

@gklijs you can turn the linter off if you disagree with Stuart Sierra: {:linters {:if {:level :off}}} 🙂

I'll agree, I'm just a bit spoiled with clippy, that's suggesting how to fix things 🙂

yeah, well the fix is ambiguous. you either really forgot something, or you didn't and then you want to use when

It's a lot harder in Clojure to know what's wrong compared to rust.

Rust can read your mind and knows that you forgot something?

I guess types help a bit there: when you forget something in the else branch it's probably not the right type

Well kind of since it's statically types and has the borrow checker. When it sees a certain type, but expects another, it suggest how to get from one to the other. When you use a string inside an enum it suggests to take make it into a reference so the enum will take less space.

Hi everyone! How do I include an NPM package in shadow-cljs? Their documentation list special cases, but I just want the simple, vanilla case. Can't figure it out 😞

npm install the-package then in code (ns (:require ["the-package" :as x]))

@thheller that's pretty simple 🙂 in normal CLJS what's the bit that you have to do extra here?

or #shadow-cljs 🙂

wow, that's simple - thanks! And I take care of version bumping like in a normal js project or are thery any gotchas?

you use npm as normal yes, your JS dependencies are kept in package.json and managed by npm/yarn

perfect, thank you so much!

Hi, I'm trying to use clojure.java-time/intervalbut I'm getting an exception "No such var: j/interval"

(require '[java-time :as j])
(j/interval (j/instant 10000) (j/duration 15 :minutes))

Hi folks, what would be the best way to change this:

[
{:name "a" :args [1 2 3]}
{:name "a" :args [5 6 7]}
{:name "b" :args [1]}
]

{
:name "a" :arg-list [ [1 2 3] [5 6 7]]
:name "b" :arg-list [[1]]
}

@trevor670

(def v [{:name "a" :args [1 2 3]} {:name "a" :args [5 6 7]} {:name "b" :args [1]}])

(reduce (fn [m s] (update m (:name s) #(conj % (:args s)))) {} v)

I can't seem to get support for stuff like :Doc using Clojurescript/vim-fireplace. When I try to use it, I get Unable to resolve var: special-doc in this context at line 1 cljs/user.cljs. Meanwhile, just using clj files, it works fine. Anyone familiar with such a setup?

Also, bindings like cpp for sending stuff to the REPL do work.

@alex.sheluchin Maybe ask in #vim ?

I have a question about conventions… when is a bang actually used to declare side-effects? I'm writing a wrapper for interfacing with a socket. When you send something a robot arm is moved (very bangy to me), when I read something it could until there's new input, so also read-response!? And connect!? In the end I have bangs everywhere, which doesn't seem right

Many many people write functions that have side effects with no ! in their names.

IIRC, most of the functions in clojure.core that have ! in their names are: (a) because they are unsafe to use within dosync transactions (but not all such functions are so marked, by a long shot), and (b) for the mutating functions on transient collections.

For (b), many of those have ! to distinguish them from their immutable counterparts, e.g. conj! vs. conj

👋 Hello! I'm trying to figure out the best way to read in a directory of files into a .cljs file. I started with a re-frame template and I can read a single file using shadow.resource as described here: https://clojureverse.org/t/using-none-code-resources-in-cljs-builds/3745. It feels like I'm going down the wrong path if I want the a directory of files though. Would anyone have any recommendations?