Is there a way to crowd fund @stuarthalloway so he can take a leave of absence from datomic customer support, and build all the cool stuff he talked about in https://vimeo.com/223309989 ? Just imagine the overall increase in clojure productivity!

https://clojure.github.io/clojure/clojure.test-api.html <-- is there a way to clear all the tests in a given namespace ? the problem I'm running into is: 1. I'm doing repl mode development. 2. I defined an incorrect test 3. now, my run-tests always has atleast one failure because one of the tests is bad. 4. without restarting the jvm/repl, is therea wa yto "clear all the tests in a namespace" ?

I'm okay if it nukes all tests (in all namespaces) too

current best solution = remove-ns + cider eval current buffer

ns-unmap?

Does tools.namepsace's refresh not handle this scenario?

@seancorfield : ns-unmap, I believe, does it one symbol at a time // I want to nuke all existing tests, which I guess is doable via getting symbols, checking their name, and removing on some conditional

@dominicm : interesting, I did not consider that (mainly due to emacs key bindings using cider eval buffer instead of refresh namespace)

cider-refresh exists

is there any reason to use -> ->> instead of using as-> everywhere ? I feel like every time I see -> ->>, I'm spending brain cycles mentally substituting exprs into sexps

@qqq i think its just a style preference. Using as-> adds a little bit more clutter which can be avoided

I’m using manifold to put collections onto a stream, now in one place I’d like to have a stream that gets each item in these collections individually - manifold provides a transform function that lets me use a transducer to transform the stream but I’m not sure if that actually helps.

An example:

(manifold.stream/put! s [:a :b :c])
;; now instead of printing "[:a :b :c]" I want the below to print each kw individually
(manifold.stream/consume #(prn %) s) 

@martinklepsch something like derived stream + s/mapcat?

@martinklepsch i think this is what you want: https://github.com/ztellman/manifold/blob/master/src/manifold/stream.clj#L799

tranfsorm with cat should do this, no?

(let [s (manifold.stream/stream)] 
  (manifold.stream/put! s [:a :b :c])
  (->> s
       (manifold.stream/transform cat)
       (manifold.stream/consume println)))

Hi! I’m hoping to include Spec, Datomic and Records in a project I’ve been thinking about for a long time, because I believe these technologies would actually enable me to realise it, but right now I’m stumbling a bit in the planning phase because of the fact that Records don’t support namespace qualified keywords. I guess I could use some custom to and from Record functions that transforms keys, but I fear that it would add a lot of complexity and making it way harder to reason about the code and flow of data. Any general recommendations, blog posts or material covering this? BTW: The reason I consider Records is that the code played out so nicely when I introduced Records and Protocols in my latest project.

What is Records ?

defrecord

Correct, I’m referring to Records as created by defrecord.

@stijn that does the trick, never used cat before 😱

Thank you very much

@martinklepsch you're welcome 🙂

anyone using celtuce?

I guess @lerouxrgd 🙂 trying to see if it's stable/usable in prod

@mokr you can put namespaced keywords in a record, you just can't define them as mandatory keys, if that helps

Anybody here use Vim Fireplace?

Is there no :as equivalent for import?

no, there's no way to rename imports

Yikes. Didn’t realize that. Hm.

For writing new (Clojure) code guess it wouldn’t hurt but think it would if you had two Java imports by the same name. In which case Java has no more ability to alias than Clojure

import is never needed though

it's a convenience, classes are hot loaded when referenced, even if you don't import

I have this code that creates a function but first it loads a file from resources. Is it ok to defn inside let that will load that resource?

(ns validator.core
  (:require [ :as io]
            [scjsv.core :as v]))

(let [schema (slurp (io/resource "schema.json"))]
  (def validate (v/validator schema)))

what you do need is the proper class path (which you should be letting lein or boot do for you)

@yonatanel why not (def validate (v/validator (slurp (io/resource "schema.json"))))

or just put the let inside the def

Oh, right. I asked about defn but used def

for a defn, I'd use (def schema ...) (defn validator ...)

it's more flexible, you can now redefine the schema independently of the validator in your repl

data hiding is usually a bad idea in clojure

nice. Thanks!

I modify a function; I call (clojure.tools.namespace.repl/refresh); I see the namespace (and parent namespaces) refreshed; I call (source refreshed.namespace/modified-function); I see the old unmodified code. Any ideas?

hey guys, I heard lein repl will write a .nrepl-port file but I've never seen it before, any ideas? (I'm using lein 2,7,1)

@qqq as-> is designed to be used inside ->, not outside it or instead of it.

Hi! I am trying to define a function which returns :clojure.spec.alpha/invalid but getting a (ironically) spec validation error. https://gist.github.com/hmaurer/4d893f633fdc8826db430b4d8401c260 (gisted to avoid spamming channel)

Hi guys! I am trying to learn cider via spacemacs. How do I eval the namespaces that i am :requiring. If I try to eval the ns declarations I get “namespace not found” errors, but after I go to the ns that was not found and eval it “by hand” go back and now i can eval that ns declaration.

require is transitive, this shouldn't be an issue - require on a namespace also requires everything that ns requires

@noisesmith , that’s what I thought. But I don’t know why I have to eval all the namespaces before I eval the ns that requires those namespaces.

one reason could be if you put the ns in the wrong place

or spelled the name wrong

anyway, none of this is cider, this is all core clojure stuff

remember that the relative path to the namespace has to match it's full name, and any - has to be translated to _

@noisesmith , please check this repo https://github.com/smnplk/clj-bencode

@noisesmith ahh, I see where I made a mistake. Actually , the namespace wans’t able to compile because inside namespace I used a function before declaring it.

I called a function before it’s declaration

oh - if you edit, then use the :reload argument to require and try again, that lets you recover

or you can load from the file as you fix it

@noisesmith , thanks, I’ll do that.