Mainly i have bigger requirement:
type TestStruct struct {
Slice []*TestItem
}
type TestItem struct {
Value1 string
Value2 string
}
so i need to create slice via reflect in TestStruct variable, create
variable for TestItem and iterate over TestItem fields and assign to
it Value1 and Value2 some text
after some changes i have reflect: call of reflect.Value.NumField on ptr Value
so reflect.New(sfield.Type.Elem()).Elem() returns pointer to needed
struct, but if i'm use reflect.Indirect i have nil variable and can't
do NumField on it
пн, 9 дек. 2019 г. в 12:30, Vasiliy Tolstov <v.tols...@selfip.ru>:
>
> Hi! I'm stuck at reflection based struct assignment.
>
> example struct
> type TestStruct struct {
> Slice []*string
> }
>
> func TestReflect(t *testing.T) {
> s1 := "one"
> s2 := "two"
> s1 := "one"
> s2 := "two"
> nodes := []*string{&s1, &s2}
> v := &TestStruct{}
> valueOf := reflectValue(v)
> typeOf := reflectType(v)
>
> for i := 0; i < valueOf.NumField(); i++ {
> field := valueOf.Field(i)
> sfield := typeOf.Field(i)
>
> slice := reflect.MakeSlice(sfield.Type, 0, 0)
>
> log.Printf("field %v\n", field)
> log.Printf("sfield %v\n", sfield)
> log.Printf("slice %v\n", slice)
>
> for _, node := range nodes {
> log.Printf("sfield elem %v\n", sfield.Type.Elem())
> value := reflect.New(sfield.Type.Elem())
> setVal := reflect.ValueOf(node)
> log.Printf("value %v\n", value)
> value.Set(setVal)
> }
> }
>
> but i'm have error
> panic: reflect: reflect.flag.mustBeAssignable using unaddressable
> value [recovered]
> panic: reflect: reflect.flag.mustBeAssignable using unaddressable
> value
>
>
> --
> Vasiliy Tolstov,
> e-mail: v.tols...@selfip.ru
--
Vasiliy Tolstov,
e-mail: v.tols...@selfip.ru
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