we can read this
but we are not going to do because it's a mess

Your post was visible in the homepage, that's why you should use spoiler flag here.

Why is this a spoiler? I'm not providing a different solution, I'm explaining why this solution is faster than others.

PS I get it. It compares 2 solutions and one of them is not here. Sorry about that.

Please use spoiler flag next time.

There's no need for the condition because it returns 0 by default

I thought it returns False if the array is empty

it defaults to 0 when you would think it's 'null'

Doesn't matter which way you do it you still get the same result. It's the same with addition too.

If you have problems reading this, you need more practice reading code; this is on the "minor" side of unreadable.

This is unreadable mess. I can't imagine why it is best practice

Not to my knowledge.

Hi.
Is there any difference between '2 * i' and 'i * 2'?

Thank you, sir

Function name is just a variable pointing to callable object, same as other variables are pointing to other value types. So you can treat them same.