const ( unsorted = [2, 30, 10, 20, 1] sorted_asc = [1, 2, 10, 20, 30] sorted_desc = [30, 20, 10, 2, 1] ) fn test_sorting_simple() { mut a := unsorted.clone() a.sort() eprintln(' a: $a') assert a == sorted_asc } fn test_sorting_with_condition_expression() { mut a := unsorted.clone() a.sort(a > b) eprintln(' a: $a') assert a == sorted_desc } fn test_sorting_primitives_with_condition_expression() { mut x := ['9', '87', '3210', '654'] x.sort(a.len < b.len) assert x == ['9', '87', '654', '3210'] } // fn get_score(word string) int { // mut total := 0 // for letter in word { // total += int(letter) - 97 // } // return total // } // fn test_sorting_with_fn_call_in_condition_expression() { // mut words := ['aaaa', 'a', 'b', 'foo', 'bar'] // words.sort(get_score(a) < get_score(b)) // } fn mysort(mut a []int) { a.sort() } fn test_sorting_by_passing_a_mut_array_to_a_function() { mut a := unsorted.clone() mysort(mut a) eprintln(' a: $a') assert a == sorted_asc } /* fn test_sorting_by_passing_an_anonymous_sorting_function() { mut a := unsorted a.sort(fn(a &int, b &int) int { return *b - *a }) eprintln(' a: $a') assert a == sort_desc } */ fn test_sorting_u64s() { mut a := [u64(3), 2, 1, 9, 0, 8] a.sort() eprintln(' a: $a') assert a == [u64(0), 1, 2, 3, 8, 9] a.sort(a > b) eprintln(' a: $a') assert a == [u64(9), 8, 3, 2, 1, 0] } struct User { age int name string } fn g(mut users []User) { users.sort(a.name > b.name) } fn f(mut users []User) { users.sort(a.name < b.name) } fn z(mut users []User) { users.sort(a.name < b.name) }