变量名:=new(Type)
func main() { a := new(int) fmt.Println(a) //输出:指针地址 *a = 123 fmt.Println(*a) //输出:123 }
func main() { var a *int *a = 123 fmt.Println(*a) }
panic: runtime error: invalid memory address or nil pointer dereference [signal 0xc0000005 code=0x1 addr=0x0 pc=0x48b576]
原文：https://www.cnblogs.com/miaoweiye/p/12088193.html