(module main)

(fn join ((left string) (right string)) -> string
  (std.string.concat left right))

(fn greeting () -> string
  (std.string.concat "hello, " "slovo"))

(fn greeting_len () -> i32
  (std.string.len (greeting)))

(test "owned string concat equality"
  (= (greeting) "hello, slovo"))

(test "owned string concat length"
  (= (greeting_len) 12))

(fn main () -> i32
  (std.io.print_string (join "hello, " "slovo"))
  (std.io.print_i32 (std.string.len (join "ab" "cd")))
  0)