A zero‑storage, privacy‑preserving age check that leverages banks’ existing KYC — with the user as the transport layer.
| local function tostring_pretty(value, cache, ident) | |
| if type(value) ~= "table" then | |
| if type(value) == "string" then | |
| return '"' .. tostring(value) .. '"' | |
| end | |
| return tostring(value) | |
| end | |
| cache = cache or {} | |
| ident = ident or " " |
hi, i'm daniel. i'm a 15-year-old with some programming experience and i do a little bug hunting in my free time. here's the insane story of how I found a single bug that affected over half of all Fortune 500 companies:
If you've spent some time online, you’ve probably come across Zendesk.
Zendesk is a customer service tool used by some of the world’s top companies. It’s easy to set up: you link it to your company’s support email (like support@company.com), and Zendesk starts managing incoming emails and creating tickets. You can handle these tickets yourself or have a support team do it for you. Zendesk is a billion-dollar company, trusted by big names like Cloudflare.
Personally, I’ve always found it surprising that these massive companies, worth billions, rely on third-party tools like Zendesk instead of building their own in-house ticketing systems.
This project developed a Lua interface with UNO for LibreOffice, focusing on enhancing scripting capabilities by supporting complex method calls and exception handling. This integration enables Lua scripts to interact directly with LibreOffice components.
tl;dr: If you want to just know the method, skip to How to section
Clangd is a state-of-the-art C/C++ LSP that can be used in every popular text editors like Neovim, Emacs or VS Code. Even CLion uses clangd under the hood. Unfortunately, clangd requires compile_commands.json to work, and the easiest way to painlessly generate it is to use CMake.
For simple projects you can try to use Bear - it will capture compile commands and generate compile_commands.json. Although I could never make it work in big projects with custom or complicated build systems.
But what if I tell you you can quickly hack your way around that, and generate compile_commands.json for any project, no matter how compilcated? I have used that way at work for years, originaly because I used CLion which supported only CMake projects - but now I use that method succesfully with clangd and Neovim.
A metatable in Lua defines various extraneous behaviors for a table when indexed, modified, interacted with, etc. They are Lua's core metaprogramming feature; most well known for being useful to emulate classes much like an OOP language.
Any table (and userdata) may be assigned a metatable. You can define a metatable for a table as such:
-- Our sample table
local tab = {}
-- Our metatable
local metatable = {
-- This table is then what holds the metamethods or metafieldsThis is inspired by https://fasterthanli.me/blog/2020/a-half-hour-to-learn-rust/
the command zig run my_code.zig will compile and immediately run your Zig
program. Each of these cells contains a zig program that you can try to run
(some of them contain compile-time errors that you can comment out to play
with)
In summary, DDNS stands for Dynamic DNS. DDNS updates a DNS name in real-time to point to a changing IP address. This is useful for devices without a static IP. For example, companies like Google use static IPs and IP ranges, which are more expensive than ephemeral IPs and IP ranges. DDNS provides a cost-effective alternative, linking a hostname to a dynamic IP address.
To use DDNS, you need an account with a DDNS provider. While some services are paid, they are still cheaper than static public IPs from ISPs. A script or service on your device updates the DDNS server with your current IP at regular intervals to maintain the link between your hostname and IP address. Luckily for us, DuckDNS is free for everybody and relays on donations to keep their services running.
| /* Written in 2017 by Tommy Ettinger (tommy.ettinger@gmail.com) | |
| To the extent possible under law, the author has dedicated all copyright | |
| and related and neighboring rights to this software to the public domain | |
| worldwide. This software is distributed without any warranty. | |
| See <http://creativecommons.org/publicdomain/zero/1.0/>. */ | |
| #include <stdint.h> |
