| #!/bin/bash | |
| # | |
| # Update database connections in Metabase from Heroku | |
| # | |
| # Tailor the following variables to your situation, set credentials in ~/.netrc (with: machine, login, password) | |
| # | |
| # Requirements: | |
| # - curl | |
| # - jq | |
| # - heroku CLI |
This project is a tiny compiler for a very simple language consisting of boolean expression.
The language has two constants: 1 for true and 0 for false, and 4 logic gates:
! (not), & (and), | (or), and ^ (xor).
It can also use parentheses to manage priorities.
Here is its grammar in BNF format:
expr ::= "0" | "1"
| WHEN WILL BROWSERS BE COMPLETE? | |
| A short exploration into the end game of web browsers. | |
| This article may seem to be about bashing Google but it isn't. It's just about | |
| reflecting on the current state and how much longer we should see ourselves | |
| here. | |
| So what is the Web? Well we can agree the Web is a conglomerate of standards | |
| proposed by the W3C. So what do those standards define? |
Peter Naur's classic 1985 essay "Programming as Theory Building" argues that a program is not its source code. A program is a shared mental construct (he uses the word theory) that lives in the minds of the people who work on it. If you lose the people, you lose the program. The code is merely a written representation of the program, and it's lossy, so you can't reconstruct
A couple of weeks ago I played (and finished) A Plague Tale, a game by Asobo Studio. I was really captivated by the game, not only by the beautiful graphics but also by the story and the locations in the game. I decided to investigate a bit about the game tech and I was surprised to see it was developed with a custom engine by a relatively small studio. I know there are some companies using custom engines but it's very difficult to find a detailed market study with that kind of information curated and updated. So this article.
Nowadays lots of companies choose engines like Unreal or Unity for their games (or that's what lot of people think) because d
| # Put this function to your .bashrc file. | |
| # Usage: mv oldfilename | |
| # If you call mv without the second parameter it will prompt you to edit the filename on command line. | |
| # Original mv is called when it's called with more than one argument. | |
| # It's useful when you want to change just a few letters in a long name. | |
| # | |
| # Also see: | |
| # - imv from renameutils | |
| # - Ctrl-W Ctrl-Y Ctrl-Y (cut last word, paste, paste) |
| /* | |
| Copy this into the console of any web page that is interactive and doesn't | |
| do hard reloads. You will hear your DOM changes as different pitches of | |
| audio. | |
| I have found this interesting for debugging, but also fun to hear web pages | |
| render like UIs do in movies. | |
| */ | |
| const audioCtx = new (window.AudioContext || window.webkitAudioContext)() |
⚠️ Note 2023-01-21
Some things have changed since I originally wrote this in 2016. I have updated a few minor details, and the advice is still broadly the same, but there are some new Cloudflare features you can (and should) take advantage of. In particular, pay attention to Trevor Stevens' comment here from 22 January 2022, and Matt Stenson's useful caching advice. In addition, Backblaze, with whom Cloudflare are a Bandwidth Alliance partner, have published their own guide detailing how to use Cloudflare's Web Workers to cache content from B2 private buckets. That is worth reading,
This is a short post that explains how to write a high-performance matrix multiplication program on modern processors. In this tutorial I will use a single core of the Skylake-client CPU with AVX2, but the principles in this post also apply to other processors with different instruction sets (such as AVX512).
Matrix multiplication is a mathematical operation that defines the product of
| package main | |
| import ( | |
| "context" | |
| "flag" | |
| "fmt" | |
| "log" | |
| "net/http" | |
| "os" | |
| "os/signal" |
