package dynamic import "reflect" func HasField(rs reflect.Value, fieldName string) (field reflect.Value, ok bool) { field = rs.FieldByName(fieldName) return field, field.IsValid() } func LookupSymbolField(rs reflect.Value) (string, bool) { if rs.Kind() == reflect.Ptr { rs = rs.Elem() } field := rs.FieldByName("Symbol") if !field.IsValid() { return "", false } if field.Kind() != reflect.String { return "", false } return field.String(), true }