如何在go中表达C ++逻辑的“新”运算符？

Question

I have a structure like this

type Node struct {
    data int
    next *Node
}

var root Node;

I would like to create a tmp Node and pass the address to root.next, how to write this kind of logic in go?

root.next = Node

Answer 1

There are no constructors in Go. You just create an object by using the type name and you can set the fields at the same time.

tmp := Node {
    data: 1
}
root.next = &tmp

You can also take a pointer to a new object.

tmp := &Node {
    data: 1
}
root.next = tmp

And then put it all together.

root.next = &Node {
    data: 1
}

There is also a new operator which is equivalent to &Node{} and therefore it is not very convienent as you need to assign field values later.