Incrementally Update Struct Golang

incrementally_update.md

Incrementally Update Struct Golang

增量删除是很重要的，比如说在update的方法里面会出现这样的情况。

type demoStruct struct {
	Replaced string
	Remain   string
}
func main() {
	oldInfo := demoStruct{Replaced: "You can see me no more", Remain: "I still here"}
	fmt.Println(oldInfo.Replaced,"  ",oldInfo.Remain)
	newInfo := demoStruct{Replaced: "I replace my ancester:)"}
	incrementallyUpdate(&oldInfo,&newInfo)
	fmt.Println(oldInfo.Replaced,"  ",oldInfo.Remain)
}
func incrementallyUpdate(update *demoStruct,info *demoStruct){
	updateS:=reflect.ValueOf(update).Elem()
	infoS:=reflect.ValueOf(info).Elem()
	for i:=0;i<updateS.NumField();i++{
		f:=updateS.Field(i)
		f_info:=infoS.Field(i)
		if !f_info.IsZero(){
			f.Set(reflect.Value(f_info))
		}
	}
	return
}