1-使用reflect.MakeSlice(reflect.SliceOf(elemType), 0, 10)
和
reflect.Append(elemSlice, reflect.ValueOf(TestStruct{"Testing"}))
,
像这样的工作示例代码:
package main
import "fmt"
import "reflect"
func main() {
elemType := reflect.TypeOf(TestStruct{})
elemSlice := reflect.MakeSlice(reflect.SliceOf(elemType), 0, 10)
elemSlice = reflect.Append(elemSlice, reflect.ValueOf(TestStruct{"Testing"}))
fmt.Println(elemSlice) // [{Testing}]
}
type TestStruct struct {
TestStr string
}
2-使用reflect.New(reflect.SliceOf(elemType)).Elem()
和
elemSlice = reflect.Append(elemSlice, reflect.ValueOf(TestStruct{"Testing"}))
像这样的工作示例代码:
package main
import "fmt"
import "reflect"
type TestStruct struct {
TestStr string
}
func main() {
elemType := reflect.TypeOf(TestStruct{})
elemSlice := reflect.New(reflect.SliceOf(elemType)).Elem()
elemSlice = reflect.Append(elemSlice, reflect.ValueOf(TestStruct{"Testing"}))
fmt.Printf("%+v\n", elemSlice) // [{TestStr:Testing}]
fmt.Println(elemSlice) // [{Testing}]
}
输出:
[{TestStr:Testing}]
[{Testing}]
3-如果需要append
,唯一的办法就是使用s := elemSlice.([]TestStruct)
,像这样的工作样品代码:
package main
import "fmt"
import "reflect"
type TestStruct struct {
TestStr string
}
func main() {
elemType := reflect.TypeOf(TestStruct{})
elemSlice := reflect.New(reflect.SliceOf(elemType)).Elem().Interface()
s := elemSlice.([]TestStruct)
s = append(s, TestStruct{"Testing"})
fmt.Printf("%+v\n", elemSlice) // []
fmt.Println(s) // [{Testing}]
}
这更符合我所寻找的内容。 http://stackoverflow.com/questions/25384640/why-golang-reflect-makeslice-returns-un-addressable-value – moesef