struct.zig

const std = @import("std");
const log = std.debug.warn;

pub const Node = struct {
    j:u64,
};

pub const ElementNode = struct {
    i:u64,
    node:Node,
    firstChild:?*Node = undefined,

    pub fn New(i:u64) *Node {
        var d = ElementNode{.i=i, .node=Node{.j=i+32}};
        log("Element : {} i:{}, node.j:{}\n", @ptrToInt(&d.node), d.i, d.node.j);
        return &d.node;
    }
};

pub fn main() void {
    var node = ElementNode.New(19);
    var child = ElementNode.New(339);

    var np = @fieldParentPtr(ElementNode, "node", node).*;
    var cp = @fieldParentPtr(ElementNode, "node", child).*;
    log("Node : {} i:{}, node.j:{}\n", @ptrToInt(node), np.i, node.j);
    log("Child: {} i:{}, node.j:{}\n", @ptrToInt(child), np.i, child.j);
}