Check your very last char!

I really don't understand, why I can't pass the first WhiteSpaceTest,
Input: "1"
Expected: False ???

Please advise!

Me too

This has a flaw since capital/uppercase search-terms won't be found.

Thank you for feedback. English not my natural language and my level must be better.
I happy by any help to doing better my kata. Because it doing this kata pretty for all.

Sorry, I was just being a bit of a dick! In my opinion the description is way too verbose and the grammar is not great.
Basically I was able to do the task by just looking at the test cases, as I found the description to be incomprehensible. Anyways thank you for this kata.

Hi, can you point, what you don't understands?
I would be happy to make the description better.

Instruction not clear I broke computer!!! LMFAO.

Simple, and more effective

Updated

Needs updated to Rust 1.49.

Awesome!

Const: Maybe to discover some wrong parametrization (a class declared with wrong operator overload, modified the input in that overload, etc) - but, yes, in this simple case, not really applies.

Ref: if you want to avoid a complex object to be copied (an object that overloads * the operator) at every call of square.

doing a const by ref is kinda pointless here no?