> It is not obvious that you need to include comparative function for a straightforward numerical sort ? No. It's not obvious. Python - a = [6, -2, 2, -7

> It is not obvious that you need to include comparative function for a straightforward numerical sort ? No. It's not obvious. Python - a = [6, -2, 2, -7] a.sort() print(a) PHP - $arr = [6, -2, 2, -7]; sort($arr); print_r($arr); Rust - let mut vec = vec![6, -2, 2, -7]; vec.sort(); assert_eq!(vec, vec![-7, -2, 2, 6]); The expected behavior is a default natural number sort. What other default was chosen? String comparison for some value of Strings, coerced from the integers in some way. If you have to research a bunch of implicit behavior to understand how sort works for numbers. I believe that's unintuitive by definition (simplest case is more complex than necessary). Fixable with a required flag or specialized functions (eg PHP).