Because converting more than 1 letter to upper case is more computationally expensive than converting 1 letter to upper case.

how so? /genq

according to my introduction to logic (or was it structired programming? cant remember) class, doing that is considered "defensive programming" and isn't a good practice.
to clarify, i think they mean doing checks like that when they arent needed. if the excercise says the input will always be a valid string, then you shouldnt do a check for that

You definetely can return a lambda function. Moreover, you can return lambda function from another lambda function.

Great

can someone explain to me as to why you cant return a lambda function and give me some examples

why use lambda? is this faster or better or what?

Not sure what you're trying to say. But this solution is wasteful.

strings are immutable, there's no differece converting the whole name or fisrt char if youre not reassociating.

Use spoiler flag next time.

Do we not need curly brackets for if statements?

Does this only work because the else statement is that final thing running?
looking at it (or the lack there of) is making my skin crawl!

LOL there's a .startsWith() function??

Please use spoiler flag next time.