There are projects that convert wasm to jvm bytecode, I'd look at one of those

(or just use ffi and some native library for running wasm)

The only one I know of is asmble. Are there others?

https://github.com/wasmerio/wasmer-java maybe, it is a wrapper around the ffi approach

Try adding -1 as the last argument.

looks completely sane to me

In the last two examples there’s data loss, that’s not sane. I am not able to recreate back the starting string in the last case

is it the same as the Java split?

Hm passing -1 seems to help

Trailing empty strings are not returned - pass limit of -1 to return all.

(str/split "" #"/" -1)
=> [""]
(str/split "/" #"/" -1)
=> ["" ""]
(str/split "/a" #"/" -1)
=> ["" "a"]
(str/split "/a/" #"/" -1)
=> ["" "a" ""]

worked with java for a long time and never noticed that “feature”

Thanks everyone

seems that this is a wrapper around java's Pattern.split method https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html#split-java.lang.CharSequence-int-

i'd prefer it to default to all, tbh, but sadly that's not how it is

also wrt "data loss" and "wanting to recreate back the starting string", zero-width lookaheads/behinds can help with that:

(str/split "/a/" #"(?=/)")
;; => ["/a" "/"]
(str/split "/a/" #"(?<=/)")
;; => ["/" "a/"]