Please approve Shell Translation

https://www.codewars.com/kumite/67025dce1bd1710b319b05eb?sel=67025dce1bd1710b319b05eb

Your code is not exactly correct, it's not a valid solution of a Codewars kata. See this article for some hints: https://docs.codewars.com/training/training-example#writing-a-solution

The code I wrote is correct. I checked it on VS and it runs smothly, but it still gives an error when testing with the sample tests. As a beginner, the fact that no kind of info is given to know more or less where to start is disssapointing.

yay

okay gotcha

No int args, string args!

No args, int arg or string args ??

TS: no random tests

added

I had it with Python but that is valid as there might be some edge cases that would have been left by you to check for.

JS, i cant understand what this kata expect by throwing an error. i did this but its still wrong

Which makes no practical sense, does it?

I cannot see various codes, because except complaining, you did not bother to share the actual code which does not work for you. All I could do is to check your most recent code (which I can sometimes do), and I saw that it does not conform to input specification of the task.

I can also see that you completed the kata, what I presume means that you found your mistake. However I still do not understand where the "works perfectly in GHCi" came from, as it did not handle valid inputs at all.

I have no idea how you can see the various codes that I entered

We can just do that, after we ourselves had solved it. Mods can see it in even more detail.

why you doubt me?!

Why the heck do you doubt the tests?! How could it be approved and sit for years if the tests were wrong? This isn't even factoring that there seems to be a real issue of no random tests available (but that's beside the point).

this code running in GHCi, all correctly

We hear this every day, and at least 9/10 times it isn't "all correctly", or it doesn't conform to CW's interface. Your local environment is not the same as codewars environment.

one version with error handling

Were you asked to do error handling for this kata? No, it's only valid inputs. So, don't worry about handling it. For this kata, monads shouldn't even come into the picture.

It seems that you're overcomplicating the task and trying to involve I/O ? Just focus on function signature at hand and keep things pure.

I have no idea how you can see the various codes that I entered and why you doubt me?! I have three versions of this code running in GHCi, all correctly. Including one version with error handling if input text isn't one of the three std input strings. I was talking on Discord FP server in the #haskell-beginners channel and getting some help.

There seems to be an issue with the read command (and readMaybe) working in GHC and not in Codewars. I removed all the use of datatypes and just used strings instead so i didn't need the read or readMaybe functions and it works in CodeWars too. Seems Codewars does not like read.