Yes, you can use subvec and into. But it's not an efficient operation, hence why they left out a function for this.

Here's how you'd do it:

(defn remidx [v i]
  (into (subvec v 0 i)
        (subvec v (inc i))))

If you're going to do this a lot and are worried about performance, you should probably use other (or additional) data structures.

remember that subvec leaks memory (it's a view over other vector, so removed item won't be GCed)

If you need to do this, check out rrb-vector, it might be closer to what you're looking for with better Big O runtimes

Yes rrb-vector is better suited for such operations in terms of performance. I hope to create a new release of that library in the next week or two that should fix several existing bugs in that library.

With that library, you can do the remidx function above and it will run in O(log N) time.

Its one of my favorite libraries, excited to hear about the potential of an upcoming release for it 🙂

Ended up simply implementing this with arraylist

It looks like you are attempting to invoke the preflight map as a function on line 95 of your gist. What if you just unwrap the parenthesis around that?

@pweyand what error are you receiving?

@U0CJ19XAM mentioned what seems like an obvious bug that would prevent your preflight from working. Have you tried raising the 200 map out of the parens that surround it?

oooh

i have not tried that yet

lemme give that a shot

im thinking it should look like this

(defn wrap-preflight [handler]
    (fn [request]
      (do
        (println "inside wrap-preflight")
        (println "value of request")
        (println request)
        (println "value of handler")
        (println handler)
        (if (preflight? request)
          {:status 200
           :headers cors-headers
           :body "preflight complete"}
          (handler request)))))

Sure, that fixes the bug I saw

Does it work?

@U0CJ19XAM no...i get around the errors i was getting in the terminal logs, but im still getting 404s on get and post requests

i want to cry

Let me look at the gist again

Are you dead set on using ring middleware or would you be open to non-ring libraries?

When you query for "/foo" or "/bar" do you get responses?

@U0CJ19XAM I do get responses if i make a straight request in the browser (ie http:..../foo)

at this point i just want to make this work

but not from curl, correct?

huh? no, a curl get request and a browser request are the same

i cant cross domain request (ie request a get from the client to the server)

Is this for work or for play?

this is for my portfolio, so one day i can get a job and not die screaming in the gutter covered in my own filth.

not that that should matter

Are you serving this from localhost?

I might change #"" to "*" and see if that works.

Otherwise, I would be happy to pair program with you on making a CORS respecting backend api either later today or within the next few days. We could go through a pretty deep dive and make the backend robust and built in an idiomatic clojure style. I hear you, I empathize with your frustration. I was just there 3 weeks ago with CORS and AWS Cognito/ API Gateway. I think the best thing may be to take a walk or step back from the problem. If you want a full sample project for how to set up CORS with pedestal I can grab one right now, but then you have to learn pedestal.

oh, well. thanks man. i might ask around.

are your CORS headers being served ?

An "#inst" is not a type, it is the serialized form of a date, so many different date time types serialize that way

It doesn't make sense to parse something into an "#inst" because it isn't a specific thing

You'll need to parse it something like a java.util.Date

It is unlikely that anything will parse that string out of the box, because it doesn't contain enough information to make a good date object (no timezone info) but you can create a custome parse using DateFormat

You could also use Instant/parse, but you would have to replace the space with a T char.