Clojurians Log v2

Morning

Morning

morning!

Babashka survey: https://nl.surveymonkey.com/r/H2HK3RC

Good morning! I'm trying to understand why

(reduce str "1") => \1

Morning

That's weird. But (reduce str "" "1") does work. Btw, (apply str ...) might be better so there's only one StringBuilder

is it going to assume that the string is a seq of characters?

I think you’re seeing a couple of things. If I remember correctly, reduce will not invoke the reducing fn if there is only one element in the list

And, as discussed previously, a string is considered a sea of chars, as @otfrom points lit

@slipset You're correct.

(reduce - [1])
1

There is a mailing list entry (or something) somewhere where Rich regrets the two arity version of reduce for several reasons.

Could make a clj-kondo rule for this: always provide an identity element

If you could point me to the Rich entry on this, could post it in an issue

https://purelyfunctional.tv/issues/purelyfunctional-tv-newsletter-313-always-use-the-3-argument-version-of-reduce/

thanks!

Thanks. I didn't run into trouble with this. I was just trying to understand reduce a bit better and one of my experiments gave me that funny result.

Hint: the other name for String is CharSequence ;) and reduce with this arity assumes that an element combined to no other reduces to itself.

https://github.com/borkdude/clj-kondo/issues/1064

anyone here had a play with flow-storm-debugger? https://github.com/jpmonettas/flow-storm-debugger