copy pointer to a new instance

[wangxufire]

type B struct {
	id string
}

type A struct {
	InsB *B
}

func main() {
	insB1 := &B{"test"}
	insA1 := &A{insB1}
	insA2 := &A{}
	deepcopier.Copy(insA1).To(insA2)

	fmt.Printf("%+v", insA1)
	fmt.Printf("%+v", insA2)
}

I want insA2.InsB is insB2

[DeathPoem]

Did you find any generic deep-copier in golang?

[CrushedPixel]

It seems like https://github.com/mohae/deepcopy has the behaviour you want:

package main

import (
	"fmt"
	"github.com/mohae/deepcopy"
)

type B struct {
	Id string
}

type A struct {
	InsB *B
}

func main() {
	insB1 := &B{"test"}
	insA1 := &A{insB1}
	insA2 := deepcopy.Copy(insA1)

	fmt.Printf("insA1: %+v | %s\n", insA1, insA1)
	fmt.Printf("insA2: %+v | %s\n", insA2, insA2)
}

Console output:

insA1: &{InsB:0xc42000e1f0} | &{%!s(*main.B=&{test})}
insA2: &{InsB:0xc42000e210} | &{%!s(*main.B=&{test})}

Note that I changed the changed the id field to be exported, as you can only set exported fields via reflection.