weird

user=> (def x (range 0 5 1.0))
#'user/x
user=> x
(0 1.0 2.0 3.0 4.0)
user=> (with-meta x {})
(5 1.0 2.0 3.0 4.0)

ah, it looks like they have the args swapped

public Obj withMeta(IPersistentMap meta){
	if(meta == _meta)
		return this;
	return new Range(meta, end, start, step, boundsCheck, _chunk, _chunkNext);
}

private Range(IPersistentMap meta, Object start, Object end, Object step, BoundsCheck boundsCheck, IChunk chunk, ISeq chunkNext){

it is called with meta, end, start, step, boundsCheck, _chunk, _chunkNext but the args of the constructor are meta, start, end, step, boundsCheck, _chunk, _chunkNext

https://ask.clojure.org/index.php/12148/strange-behavior-with-range-and-with-meta

Thx - what version are you on?

1.11.1 for me.

java.util.regex.Pattern/quote

Hmm, thanks, I'll look into it.

😄

I'm not entirely sure this is exactly what I need because this returns a quoted pattern but I need something to quote the \ character in my replacement.

However, if I escape it with \\ it turns into a single \ which is then interpreted as an escape for the $

(clojure.string/replace "." #"[.*+?^${}]" #(str "\\" %1))

That did the trick! Thank you!

fwiw, I've found https://github.com/lambdaisland/regal very helpful for composing regexes, the alternate syntax makes it almost self-documenting for future reading too.

I had to write a parser by hand and regal made it much easier.

Huh, interesting.

@U028BUU1P3R I took a look at regal but it doesn't have non-capturing groups and it looks like I need those unless want to write my own state machine.

It does, you just use :cat instead of :capture. If you want to check what it produces just call regal/regex and compare the generated regex with a hand-rolled version.

I've been using it and I don't want to go back. It’s convenient to have refer literals in a string like format but it’s super powerful to be able to compose and manipulate regexes like you manipulate arrays.

this one ? https://apexdatasolutions.com/home2/acce%ce%bberate/

Ah that must be it, thank you! For some reason I was thinking that Microsoft itself had done this

This is the one I saw here and cross-posted to our company slack 🙂 https://code-magazine.com/Article/2207071/The-Excellent-Schemer

cool - thanks!

the aliases will only be used from the deps.edn in the directory you are in (dependency aliases are not used)

https://ask.clojure.org/index.php/7843/allow-specifying-aliases-coordinates-that-point-projects is a request for something like this if you want to upvote it

Thanks... that seems to leave me with 2 options for now: 1. define aliases in the top-level deps.edn for each sub-project so that each alias has extra-deps and extra-paths 2. Have each sub-project include the test folder in paths in its deps.edn Am I missing something, is there a better way?

I think those are both options that would work

a simpler version of 1 would define a single alias with all the nested extra-deps and extra-paths (not sure how interrelated all of those are)

Awesome. Thanks Alex! Clojure is great, the best language in ze worlld!

And the community is great too! What's not to love 😍

So does that mean I should do map outside of the macro and pass it in? It isn't quite clear to me how to address this.

which part?

Both parts tbh. I'm pretty new to macros. I dont really understand how I am shadowing map when I called it outside of the syntax quote.

the shadowing of map has nothing to do with macros and quoting

you have a function/macro with an an argument named map and then in the body you have (map ... map)

where both those map names refer to the argument named map that is passed in, and neither refers to clojure.core/map

ohhh I see. Yea I changed the arg name and still got the same error

well, you got the same exception, but thrown in a different place

and that is because you are doing something like (m x) where m is a macro, so m is getting passed the symbol x not the value the symbol x evaluates to, and you are trying to use the value x evaluates to in m

hmm so I tried moving the syntax quote up to the let. But it keeps throwing

(defmacro build-fuctions [data]
  `(let [fn-list  (map
                  (fn [[k v]]
                    (create-function k v)) data)]
     (do
        ~@fn-list)))

yeah, you are trying to generate code at compile time that depends on information available at runtime (which is after compile time)

you are trying to time travel information

for a limited class of things, you can actually do this, because clojure's notion of compile time vs, runtime is fine grained, and the runtime information of previous code is part of the compile time information for the next code

so the data I plan to iterate through will come from http. So could I make that call inside the body of the macro to make it available at compile-time?

you could, but doing side effects like that in a macro is not a good idea

how else could i make it available at compile time then?

you can do it, it is a fun party trick, but doing http requests everytime you load your code (and what do you do if those http requests fail, how does that effect your code loading?) is going to drive you nuts

hmm well it looks like I have some thinking to do. Thank you for your help!

One thought, if you absolutely must have this information in vars rather than just data at runtime, make a script that hits the endpoint and stuffs it into some edn files. Build vars from the edn map?

that makes sense! thanks

It will be evaluated each time. It's easy enough to check:

user=> (defn f [] (comp map set))
#'user/f
user=> (f)
#object[clojure.core$comp$fn__5876 0x69b2f8e5 "clojure.core$comp$fn__5876@69b2f8e5"]
user=> (f)
#object[clojure.core$comp$fn__5876 0x1a411233 "clojure.core$comp$fn__5876@1a411233"]
user=> (= (f) (f))
false

(defn foo []
    (let [a {:a 1}]
      a))

  (System/identityHashCode (foo))

The way you could do this would be to extract your xfm to a def or a local variable, e.g.:

(let [xfm (comp set (partial map :resource-object-id) :response))]
  (defn foo [reqs]
    (apply xfm (map do-post reqs))))