struct Test { a ?string = 'foo' b ?int = 3 c ?f64 = 1.1 d ?[]int = [1] e []?int = [?int(2)] } fn test_dump_opt1() ? { a := ?int(0) b := dump(a) assert b? == 0 } fn test_dump_opt2() ? { c := ?int(none) d := dump(c) assert d == none } fn test_comptime() ? { v := Test{} $for f in Test.fields { a := dump(v.$(f.name)) b := v.$(f.name) dump(a) dump(b) } }