The function base itself f=s=> is 5 characters. So you only have 4 characters to check if a variable is uppercase or lowercase.

The best I can come up with is 5 characters... just one short.

I need a hint :( and yea this is rated 7 kyu for some reason

Why not just check all lowercase and all uppercase letters?

You could do that, and then also add random tests on top.

same, and i think we have the exact same code

Good, that codewars is not a platform to write productive code on :-)

The solutions under here aren't being pushed into a company's repository. Sometimes, best practices advice like this is unsolicited

This challenge has literally "golf" in the title, and is tagged with restricted tag. So yes, you need to come up with short code, this challenge is designed this way.

Do we really need to shorten the code to such an extent—to just 9 characters?

The main purpose of programming is not just to run code, but to write it in a way that is clear, understandable, and maintainable. Excessive code golfing solely to meet an arbitrary length limit goes against best practices in clean coding.

This type of challenge, known as Code Golf, can be a fun mental exercise and experiment, but it is not practical at all in the daily work of programmers. Companies and development teams prefer clear, well-documented code over short, obscure code.

Encouraging clean and readable code writing is much more valuable for learning and skill development than forcing extreme code shortening that harms clarity.

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done

done

this should be marked best practice, there is no absolutely reason to use ternaries like the current top answer

i love how all of us have the same solution except the variety is on characters

(not like there was any other way to solve this god forsaken puzzle)

done

this is an interesting one!