same ans

not bad!

It's shorter, but it's a lot less readable.

Yes, that's logically equivalent

Yes, that's possible.

Now it's invalid.

Amazing this has most upvotes for Best Practices when it is clearly wrong.

Expected: CHECK(stray({ 8, 1, 1, 1, 1, 1, 1 }) == 8)
Actual: 1

aye. If you already have a boolean, then just use the boolean. The conditional is redudant.

the else if would changed by only a else

if (true)
return true;
else if (false)
return false;

How about
return !(x|y)

Can't you remove std:: out of the function's arguments as well?

what if the first element is different?

that's true, my mistake

Can't do !(x+y), because if x and y match, you'll get a false positive.