vlib/v/checker/tests/array_delete_print_err.vv:3:2: error: `println` can not print void expressions
    1 | fn main() {
    2 |     mut a := []string{}
    3 |     println(a.delete(0))
      |     ~~~~~~~~~~~~~~~~~~~~
    4 |     println('${a.delete(0)}')
    5 | }
vlib/v/checker/tests/array_delete_print_err.vv:4:15: error: expression does not return a value
    2 |     mut a := []string{}
    3 |     println(a.delete(0))
    4 |     println('${a.delete(0)}')
      |                  ~~~~~~~~~
    5 | }