test.zig

const Node = struct {
    id: []const u8,
    parent: ?*Node = null,
};

pub fn main() anyerror!void {
    var something = true;
    var a = Node{ .id = "a" };
    var b = Node{ .id = "b", .parent = &a };



    if (something) {
        if (b.parent) |p| {
            std.log.info("{} {}", .{ b.id, p.id });
        }
    }

    // vs 

    if (something and b.parent) |p| {
        std.log.info("{} {}", .{ b.id, p.id });
    }
}