Function NewStructIterator

helpers/struct_iterator/struct_iterator.go:60–72

NewStructIterator creates returns a new iterator for a struct. This only works with struct types, not maps. It will only iterate over public members of the struct. Currently struct pointers will result in an error

(s interface{})

// over public members of the struct. Currently struct pointers will
// result in an error
func NewStructIterator(s interface{}) (*StructIterator, error) {
	t := reflect.TypeOf(s).Kind()
	if t != reflect.Struct {
		return nil, fmt.Errorf("cannot create iterator from type %T", s)
	}

	v := reflect.ValueOf(s)
	return &StructIterator{
		idx:      -1,
		numField: v.NumField(),
		val:      v,
	}, nil
}