#!/usr/bin/env bb

(require '[babashka.cli :as cli])
(import  (java.time YearMonth))
(import  (java.text DecimalFormat))

(def cli-options {:month {:coerce :long}
                  :year  {:coerce :long}
                  :help  {:coerce :boolean}})

(def decimal-format (.DecimalFormat "00"))
(def last-hour "23:59:59")

(let [{:keys [month year]} (cli/parse-opts *command-line-args* {:spec cli-options})
      days-in-month    (.lengthOfMonth (YearMonth/of year month))
      two-letter-month (decimal-format/format month)
      formatted-date   (str year "-" two-letter-month "-" "01" " " last-hour)]
  (prn formatted-date))

This is my script

When I run I get this error

bb src/calc-month.clj --month 3 --year 2024
----- Error --------------------------------------------------------------------
Type:     java.lang.Exception
Message:  Unable to resolve classname: java.text.DecimalFormat
Location: /Users/rnatarajan/Documents/Coding/ekata/calc-cpm/src/calc-month.clj:5:1

----- Context ------------------------------------------------------------------
1: #!/usr/bin/env bb
2:
3: (require '[babashka.cli :as cli])
4: (import  (java.time YearMonth))
5: (import  (java.text DecimalFormat))
   ^--- Unable to resolve classname: java.text.DecimalFormat
6:
7: (def cli-options {:month {:coerce :long}
8:                   :year  {:coerce :long}
9:                   :help  {:coerce :boolean}})
10:

----- Stack trace --------------------------------------------------------------
user - /Users/rnatarajan/Documents/Coding/ekata/calc-cpm/src/calc-month.clj:5:1

https://github.com/babashka/babashka/blob/master/src/babashka/impl/classes.clj I think this is a list of the java classes available in Babashka

Babashka doesn't include all Java classes. Only three java.text classes are exposed: https://github.com/babashka/babashka/blob/master/src/babashka/impl/classes.clj#L412-L415

Hah, jinx!

You could just use format:

(~)-(!2002)-> rlwrap bb
Babashka v1.3.188 REPL.
Use :repl/quit or :repl/exit to quit the REPL.
Clojure rocks, Bash reaches.

user=> (format "%02d" 12)
"12"
user=> (format "%02d" 2)
"02"
user=> (format "%02d" 10)
"10"
user=>

Thanks @U04V70XH6 @U02FVPF04A1

Yeah perhaps I could add this class since it came up before. I never ever used it myself though :)

I basically just want to know branch and git sha of the HEAD. But often when I roll something like that I discover that I am reinventing wheels. 😃

I usually just use babashka.process/sh or something and then parse the output

https://github.com/clj-jgit/clj-jgit doesn’t work with babashka, right? Asking because there’s a Clerk notebook that uses clj-jgit: https://github.com/nextjournal/clerk-demo/blob/main/notebooks/git.clj

jgit certainly doesn't work with bb. note that even tools.deps dropped the dependency on jgit just to shell out to git instead

or rather this one: https://github.com/clojure/tools.gitlibs

and that dep fully works with bb :)

Awesome. For my usecase p/sh was what I needed. But I’ll try to remember tools.gitlibs!

if you catch with (catch Exception ^:sci/error e) then yes, I think

Do you have a repro?

Welcome btw!

OMG OMG OMG am I talking to THE borkdude? I really appreciate all you have done. Thank you very much!!! Now as for the problem, it's as simple as (println "한글"), which prints ??? instead of 한글. Is bb supposed to print Asian character properly?

In DOS prompt and BB REPL respectively: echo "보크듀드 감사합니다!" "보크듀드 감사합니다!" user=> (println "보크듀드 감사합니다!") ?????? ????????! nil

ok let me try :)

$ rlwrap bb
Babashka v1.3.190-SNAPSHOT REPL.
Use :repl/quit or :repl/exit to quit the REPL.
Clojure rocks, Bash reaches.

user=> (println "보크듀드 감사합니다!")
보크듀드 감사합니다!

this is on macos in iterm2

I can also try on Windows...

what terminal are you using?

cmd.exe

on Windows 10.

have you also tried normal clojure? I'll double check

When using Calva on VS code, it prints properly in the output window. It's when I'm using cmd.exe when it doesn't print correctly.

I think it's probably a cmd.exe problem then

but let's try normal clojure

just a minute

yeah this isn't specific to bb:

C:\Users\borkdude>clj
Clojure 1.11.1
user=> (println "보크듀드 감사합니다!")
???? ?????!
nil

oh

in lein repl, it work properly.

weird. try chcp 65001 in cmd.exe

this helps here locally

https://stackoverflow.com/a/388500/6264

Active code page: 65001 C:\Users\urban>bb Babashka v1.3.189 REPL. Use :repl/quit or :repl/exit to quit the REPL. Clojure rocks, Bash reaches. user=> (println "한글") nil

Now instead of ?? it print

oh the characters aren't even printed properly here. Let me read the post and get back to you later!

It's an honor to talk to you!

do you by any chance have wsl2 installed?

I don't know exactly what is the problem with bb + cmd.exe but it does work for me with wsl2 and mac iterm2

You may want to look into the details of how Windows encodes UTF-8 characters; frequently Windows applications default to the windows-1252 encoding for files which is primarily ASCII based and will fail on non-Latin character sets. Windows continues to rely on the presence of a https://en.wikipedia.org/wiki/Byte_order_mark to decode UTF-8 properly. I recently had to add a https://github.com/jimpil/clj-bom to my JVM Clojure project to deal with this issue on Windows. I suspect that a similar issue may be occurring here.

I don't have wsl2 installed, but it seems like the problem lies with cmd? It's not bb specific because the clj command example also prints ??? instead of Korean characters.

even with chcp 65001? sorry, my Windows knowledge is limited

you might also see if you have better luck with PowerShell than cmd

Yeah... no luck with chcp. May I should explore PowerShell or wls2!

Anyhow, it seems like the problem lies with something other than babashka. If I find anything useful, I'll come back and post.

How sophisticated a cache system do you need?

I am writing a babashka AWS lambda, and I wanted to avoid making it too complicated so a library that just worked would be nice, but honestly I just made a simple cache with an atom and it seems to be fine.... Its not too hard to follow

Might be a better way but like I just needed to cache a token

(defn memo!
  [f atom]
  (fn [& args]
    (if @atom
      @atom
      (reset! atom (apply f args)))))

(defn clear-memo!
  [atom]
  (fn []
    (reset! atom nil)))

looks good to me. (if x x ...) could be written as (or x ...) but this is just a minor nitpick

Thanks 😄

And clojure.core/memoize isn't sufficient?

i.e., the built-in function memoization

the built-in doesn't let you clear the atom

I need to clear the cache when I get a 401 back! Hence why I wanted to use the former I mentioned

Ah, gotcha. Yeah, that would be a nice enhancement to the built-in one -- some magic set of arguments that caused the cache to be cleared for all invocations.