so cool!!

It's ridiculously finicky

Like, what should this return?

(format “%,(010d” -101)

matching behavior like this is so hard. thanks for doing it 💜

Or… how should -1 be represented in hex? It can't be 64 bits wide because integers on JavaScript are only 52 bits wide

oh god I didn't even think of that

I did say “ridiculously finicky”

an understatement, I'm sure

if anyone can figure it out, though, it's you

One thing I haven't put a lot of effort into though is incompatible flag combinations

how do you mean?

For instance, ”%-010d” says to print a number at least 10 characters wide, left-justified, with leading zeros to make up the width. But if it's left-justified then there can't be any leading zeros

If there are leading zeros then it will take up the whole width and left/right justification won't matter

You know… that kind of thing 🙃

On the plus side, I know much more about formatting text strings than ever before!

this just in: found the text formatting goddess

I get paralyzed with those kinds of choices tbh

and in the end devs need to be aware of at least some of it

write once, run anywhere: a god damn lie from the start

Programming in a nutshell: You are walking down the street only to fall in a little pothole that ends up being 3km deep and require a thorough study of spelunking to get out again.

> An implementation of the cljs.core/format function for ClojureScript. Also runs (redundantly) in Clojure. Not sure how I should read this. Should it say an implementation of the clojure.core/format function?

Well it's trying to be an implementation of the missing cljs.core/format function

That's awesome. Maybe say that in the README? 😃

Also, is clormat a play with the name of cljs.pprint/cl-format?

Are you trying to do this without reading the openjdk source?

Yes, I am 🙂

The name was probably informed by the existence of cl-format, but I was just thinking “CLojure fORMAT”

That’s cool and a much harder task lol. Makes sense for licensing reasons if you want to upstream it; you’re a champ for doing this

finicky looks like fn-hickey (aka function by Rich Hickey)

Yes… very finicky. I’ve been exploring more, and I now have more info to make it better for localization (correcting expanding with zeros, etc)

Every allowable zero: 0٠༠০०۰၀๐᱐

Depending on the country and language setting

Is it supposed to format numbers and things according to locale? If so I could have a look at the Swedish.

It’s defined to work against the current default locale, which I have yet to figure out how to set during testing 🙂

There are relatively consistent rules to follow regardless of locale, but not all of it is apparent

Expand with 0s varies according to the number system in use (see the earlier message). Group separators are an issue as well, since they also vary with the numbering system

Somewhat ironically, Arabic does not use the numbers we call “arabic” 🙂

For instance, the number 1234 in one form of arabic is: ١٬٢٣٤

The second character is the group separator. European countries are easy enough for me: UK: “1,234”, FR: “1 234", GE: “1.234”

Although the Dutch uses comma for decimals, and dot for thousands. Exactly opposite of Americans. This has never lead to input confusion for me-as-a-Dutchie

These things are easy, since the digits are all the same

Here are all the possible outcome for (format "%,d" 1234):

"1,234"
"1.234"
"1234"
"1 234"
"1’234"
"١٬٢٣٤"
"۱٬۲۳۴"
"१,२३४"
"১,২৩৪"
"๑,๒๓๔"
"༡,༢༣༤"
"၁,၂၃၄"

Extra notes: • clojure.core/format wraps java.lang.String/format which does not accept a locale. This means that it always select the current default, and you cannot control it on this function. • You can control it on the JVM, via: (String/format (Locale/forLanguageTag "sv") "%,d" (object-array [1234])) • You can do the same on JS via: (.format (js/Intl.NumberFormat. "sv" #js{:grouping: true}) 1234) • This is for the trivial case of a pattern of "%,d". More detailed cases cannot be formatted via the locale settings, and require manual intervention. For instance, when using "%,010d" then using locale formatting to ask for 10 digits in the UK will give an output of: "0,000,001,234". However, the format function actually outputs: "000001,234". Note how the localization groups the zeros, but the format does not?

I’m just scratching the surface here

It gets hairier 🙂

👏 👏 👏 Been waiting for this thank you so much! 🙏

you are welcome! if you have any questions show up in #flow-storm!

for people that tried it for ClojureScript and was annoyed by having to reconnect the debugger by hand when reloading a browser page or restarting the shadow repl just released 3.0.188 which does automatic connection management. It also shows the connection status for the repl and the runtime on the bottom right corner