go語言復制一個struct 對象

 

 

 

-----------------

package main

import (
  "log"
)

type meta struct {
  name string
  age int
}
func (m *meta) copy(dest *meta) {
  *dest = *m
}
func main() {
  a := meta{name:"aaaaaaa", age:123}
  log.Println(a)
  var b meta
  a.copy(&b)
  b.name="fly"
  b.age = 77
  log.Println("b:", b)
  log.Println("a:", a)
}

　　其實，struct 對象直接賦值給其它變量，就可以了。賦值時，為值拷貝。

 

 

 

package main

import (
"log"
)

type meta struct {
name string
age int
}
func (m *meta) copy(dest *meta) {
*dest = *m
}
func main() {
a := meta{name:"aaaaaaa", age:123}
log.Println(a)
var b meta
a.copy(&b)
b.name="fly"
b.age = 77

c := a
c.name = "zzz"
c.age = 9

log.Println("b:", b)
log.Println("a:", a)
log.Println("c:", c)
}