Doesn't work.

clever solution - BRAVO !

Interesting solution but doesn't preserve types (for example the bool false would become a string "false". It would not work as expected with the example in the kata description.

This solution is so simple. Clever

nice

Yeah this is awesome tbh. Nice.

What in the world is this, man?! crazy, but liked it :)

hi there!
I am new coding, I solve this kata, but I really want to understand how you do it.
Could you please explain a lil bit for me.
Thank you, nice work!

Sample tests expect true or false instead of the post code or "Not a post code".

The instructions are ambiguous. It is unclear that alphanumeric characters are allowed the post code but not between its characters. The examples shown in the instructions do not exhibit any extraneous alphanumeric characters.

Many thanks for taking the time to add more fixed tests, greenlit (i.e. Kata voted as "Very Satisfied") :D

I've create another 10 Unique Test cases

Codewars Forums - Kata Best Practices - Have Full Code Coverage

While having (only) 10 fixed assertions in the entire test suite isn't that bad, it is still somewhat inefficient to prevent logically flawed and/or hardcoded solutions from passing. You could either (1) add at least 10 more unique, distinct fixed assertions including edge cases (the minimum requirement to resolve this Issue) or (2) write 100+ random tests as per standard Codewars practice (and is generally preferred over just 20+ fixed tests)

Is this really a valid post code?
e26265325325c1ap4bx
Expected: true, instead got: false

According to your solution, validating postcodes is up there with Quantum ChromoDynamics.

You can't fit that in six examples, really.