Go语言中的new() 函数和make() 函数有什么区别？
package main
import "fmt"
type Sum struct {
x_val int
y_val int
}
func main() {
// 堆代码 duidaima.com
// Allocate enough memory to store a Sum structure value
// and return a pointer to the value's address
var sum Sum
p := &sum
fmt.Println(p)
// Use a composite literal to perform
//allocation and return a pointer
// to the value's address
p = &Sum{}
fmt.Println(p)
// Use the new function to perform allocation,
//which will return a pointer to the value's address.
p = new(Sum)
fmt.Println(p)
}