Andrew Johnston billywhizz

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:

say hello to zendesk

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 [email protected]), 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.

your weakest link

Building Chrome V8 on Windows

In order to be able to build v8 from scratch on Windows for x64, please follow the following steps.

These instructions were updated to work with Windows 11 Build 10.0.22621, but this should also work on WInodws 10

NOTE: While the Chrome team does provide decent documentation, there are some nuances and other additional steps that must be done for v8 to compile on Windows.

Documentation:

https://chromium.googlesource.com/chromium/src/+/master/docs/windows_build_instructions.md#Setting-up-Windows

a good example of where dynamic/jit is good is sqlite api.

with dynamic/jit, we can compile a function that is specific to the table layout and column types of the query we are running. we can eliminate code this way.

if we implement this in C or some statically compiled language then we have to use the same logic for every query, which is less efficient.

e.g.

BLAKE2

BLAKE2 is an improved version of the SHA-3 finalist BLAKE, and was designed by a team of experts in cryptanalysis, implementation, and cryptographic engineering; namely Jean-Philippe Aumasson, Samuel Neves, Zooko Wilcox-O'Hearn and Christian Winnerlein.
BLAKE2s (the one checksum currently uses) computes a message digest that is 256 bits long, and represented as a 64-character hexadecimal number, e.g. 4264cb256d94533b6e152da59256638bc6adfda3efc5550d7607d4e6e45592fc.

Types

BLAKE2b (or just BLAKE2) is optimized for 64-bit platforms and produces digests of any size between 1 and 64 bytes.

intro

if we run

bun simple.mjs

node simple.mjs

setup

git clone https://github.com/WiringPi/WiringPi.git
cd WiringPi/
./build debian

	""" Trains an agent with (stochastic) Policy Gradients on Pong. Uses OpenAI Gym. """
	import numpy as np
	import cPickle as pickle
	import gym

	# hyperparameters
	H = 200 # number of hidden layer neurons
	batch_size = 10 # every how many episodes to do a param update?
	learning_rate = 1e-4
	gamma = 0.99 # discount factor for reward

	const SQLITE3_OK = 0;
	const SQLITE3_ROW = 100;
	const SQLITE3_OPEN_READWRITE = 0x00000002;
	const SQLITE3_OPEN_CREATE = 0x00000004;
	const SQLITE3_OPEN_MEMORY = 0x00000080;
	const SQLITE3_OPEN_PRIVATECACHE = 0x00040000;
	const SQLITE3_OPEN_NOMUTEX = 0x00008000;

	function assert (condition, message) {
	if (!condition) {

	#!/usr/bin/env bash
	set -euo pipefail

	help() {
	cat <<EOF
	vmctl [COMMAND] [ARGS]

	Launch firecracker VMs from configuration templates with networks
	managed by CNI. VM configuration is stored in $VM_CONFIG_DIR
	and network configuration is stored in $NET_CONFIG_DIR

	node_modules
	*.sqlite