I’m using the golang pointer to do some empty check. But I’m so confused about how to check the nil situation. It’s much different from C. For example there is a mock object

type Node struct {
    Val  int
    Next *Node
}

When I create object

a := &Node{Val:1,Next:nil}

And I want to judge if the a’s next value is empty. I use the following code

if *a.Next == nil{}

But the complier raise error that the type is not align. Does it not mean the object (referred by a point)’s Next property? After I wrapped the *a with () it works. So I don’t know why the * operator is not work.

Another question is that when I use the following

if a.Next == nil {}

It also works fine. But it is strange. Since a should refer to a memory address value which contains object. Memory address can’t have “Next” property, only object has it. So why the a.Next can get the value instead of raising exception?

feel confused.