the trick here is that an interface can't extend anything, but two things extending the same interface or protocol is how we tend to do things

also composing interfaces - implementing multiple interfaces to make one thing

The question I meant to ask: Should I be using :import or require for goog.fx.Dragger. My thought is that it should be import because Dragger is a class. see https://google.github.io/closure-library/api/goog.fx.Dragger.html

but then this class also has enums that can be imported at Dragger.EventType

To take this thought to the next step, what happens when enums from different class have the same names like:

[goog.events EventType]
[goog.fx.Dragger EventType]

[goog.events.EventType]
[goog.fx.Dragger.EventType]

@tkjone You would be able to get away with importing one of the EventTypes while using the other one’s full, namespace-qualified name

Anyone know much about Cursive? I can't get Clojurescript to work in the REPL. It'll load files fine as long as they don't use any external libraries.

Hey! I am using cljs-ajax like this :

(defn signin
  "Try to signin using email and password"
  [{ :keys [email password handler error-handler]}]
  (POST (str uri-host "/users/password_signin")
              {:params {:email email
               :password password}}
               :format :json
               :handler handler
               :error-handler error-handler))

is there someone with bigquery experience ?

@troglotit Looks like :format, :handler, and :error-handler aren't part of the options map

Hi there! Anyone know what this means? Uncaught TypeError: Cannot read property 'ReactCurrentOwner' of undefined How can I debug the advanced-compiled reagent/re-frame-app?

Hello guys

(read-line) can read integers as well ?

read-line reads strings

Cool

For reading ints

(read-int) ?

read-int is not valid

🙂

read the input as a string and parse an int from that string

using e.g. Integer/parseInt

👍

How do you write and store your doodling ? I write little code with data.csv and spec-provider to explore some files. Not something I really want to put in an application, but I would like to put in a repository for futures explorations. I create a “app” with leiningein with seems overkill, but that’s the only way to write Clojure I know at the moment. Maybe I should look at deps.edn, ... ? Do you have some good pointers (blog posts, articles, ...) on the subject ?

@timok I’m not sure exactly what your issue is, but based on some googling, I’m seeing reports of people getting this error when they have multiple React libs with different versions, especially React 15 vs 16. Try lein tree :deps to see if you can spot any conflicting React versions and if lein recommends any exclusions.

@c09mld try #cursive. the author hangs out in there.

I'm trying to use clj-http's convenient :as :json option to turn JSON into a Clojure map, but the OData endpoint I'm using returns annoying JSON field names like "[email protected]". Some functions seem to handle it just fine, but things like keys or map blow up because of the "@". I need the data the keys provides, and the keys are dynamic, so I can't deal with each key specifically. Any ideas on how to succinctly deal with the bad characters?

I think you need to use string key instead of keyword keys. so :as :json-string-keys

Ah, ok. That would solve it. Thanks!

@d4hines also, (keyword "[email protected]") does work - but much better to use strings instead of keywords for that kind of data

Ok, cool. Fortunately, :json-string-keys is working beautifully.

I'm pretty puzzled how to use cljs-ajax library correctly. I have implemented a Clojure/Ring backend and tested with curl and Postman that both the GET and the POST interfaces work properly. I have configured the required cors settings. In ClojureScript frontend when using the cljs-ajax library to send a GET request everything works properly. But when sending a POST request (a map of a couple of key/value pairs as json) I get reply: XMLHttpRequest cannot load <POST url>. Response for preflight has invalid HTTP status code 400. And the weird thing is that the browser seems to send OPTIONS instead of POST. I'd be happy to find some working example to check what I have misunderstood.

@kari.marttila are you sending your GET and POST to the same url specified in exactly the same way?

unlike curl, a cross origin request needs a preflight and cors setup

it will send OPTIONS first iirc and the backend has to be ready to cooperate

oh GET doesn’t require preflight

https://hacks.mozilla.org/2009/07/cross-site-xmlhttprequest-with-cors/

that’s why the different behavior

> The CORS specification mandates that requests that use methods other than POST or GET, or that use custom headers, or request bodies other than text/plain, are preflighted.

(quote from my above http://mozilla.org link)

@kari.marttila the root of your problem is not cljs-ajax, it’s that you just don’t have cors setup correctly

Ok. Thanks. I'll investigate the issue now that I now what to fix. Thanks. 🙂

@lee.justin.m and @noisesmith: Any suggestions what should I add in the Clojure/Ring application side? I have currently configured the cors settings as: (assoc-in [:headers "Access-Control-Allow-Origin"] "*") (assoc-in [:headers "Access-Control-Allow-Headers"] "X-Requested-With,Content-Type,Cache-Control") (assoc-in [:headers "Access-Control-Allow-Methods"] "GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS") (assoc-in [:headers "Content-Type"] "application/json") (assoc-in [:headers "Access-Control-Max-Age"] "1728000")

@kari.marttila Have you looked at the ring-cors middleware to do this automatically for you?

(let [h (ring-cors/wrap-cors handler
                               :access-control-allow-headers #{"accept"
                                                               "authorization"
                                                               "content-type"
                                                               "origin"}
                               :access-control-allow-methods [:delete :get
                                                              :patch :post :put]
                               ;; 24 hours (in seconds) -- note that only Firefox
                               ;; will honor this; other browsers cap lower!
                               :access-control-max-age "86400"
                               :access-control-allow-origin #".*")]
    (fn [req]
      (h req)))

(It doesn't improve the configuration much over what you're doing manually, but it handles the OPTION preflight check automatically)

Maybe this should be obvious, apologies if it is, with the clj tool is there a recommended way to integrate clojure.test?

@drewverlee Did you see my dot-clojure deps.edn file? I posted the link to GitHub in a few places...

https://github.com/seancorfield/dot-clojure

clojure.test is "built-in" (part of the main Clojure JAR) so you can just use it in code without additional dependencies -- so the key steps with clj are: adding test as a path (or wherever your test code lives) and adding some sort of test runner (such as Cognitect's test-runner project). https://github.com/seancorfield/dot-clojure/blob/master/deps.edn --

clj -A:test:runner

clj -A:test:runner:1.7

I separate the test paths/deps from the runner so that I can start an nREPL server with tests on the classpath

clj -A:test:nrepl

Yea. Thanks @seancorfield. I somehow missed it in the offical docs to: https://clojure.org/guides/deps_and_cli#extra_paths

(hmm, I don't have Clojure 1.7 in my deps.edn but I do have that alias in core.cache and core.memoize which both use clj / deps.edn for local dev/testing)

So, multi-version testing of core.cache https://github.com/clojure/core.cache/blob/master/deps.edn is

for v in 1.6 1.7 1.8 1.9 master; do clj -A:test:runner:$v; done

Thanks @seancorfield! I'll try that tomorrow. It's already midnigh in Finland, got to go to bed.