Macro leetcode_trees_rs::list_node

macro_rules! list_node {
    ($val:expr) => { ... };
    ($val:expr, $($rest:tt)*) => { ... };
}

Description

A macro to reduce the boilerplate in generating a full ListNode.

Example

This code:

use leetcode_trees_rs::utils::list_node;

let node = list_node!(1, 2, 3, 4);

Is the equivalent of the following:

use std::boxed::Box;
use leetcode_trees_rs::utils::{list_node, ListNode};

let node = ListNode {
    val: 1,
    next: Some(Box::new(ListNode {
        val: 2,
        next: Some(Box::new(ListNode {
            val: 3,
            next: Some(Box::new(ListNode::new(4))),
        }))
    }))
};
assert_eq!(node, list_node!(1, 2, 3, 4));