Dylan Frankland dfrankland

How to Make Your Printer Public

This September I decided to share my laser printer so anyone on the internet could send me printed messages.

Within a few days I got hundreds of fun print-outs from people all over the world.

Using Google Cloud Print, you can easily make your printer public too. Here's how to do it:

A compile-time 4-Bit Virtual Machine implemented in TypeScript's type system. Capable of running a sample 'FizzBuzz' program.

Syntax emits zero JavaScript.

type RESULT = VM<
  [
    ["push", N_1],         // 1
    ["push", False],       // 2
 ["peek", _], // 3

Understanding Nix Inputs

Every Nix derivation produces a Nix store output that has 3 things:

Executables
Libraries
Data

Executables are always exported using the PATH environment variable. This is pretty much automatic.

GPG signing –

Here is a short guide that will help you setup your environment to create signed commits or signed tags with Git locally. This has been extensively tested on Windows with Git and the Github Desktop application: I use it every day for my professional development projects.

I you face any issue, feel free to leave a comment below.

Stop using JWTs!

TLDR: JWTs should not be used for keeping your user logged in. They are not designed for this purpose, they are not secure, and there is a much better tool which is designed for it: regular cookie sessions.

If you've got a bit of time to watch a presentation on it, I highly recommend this talk: https://www.youtube.com/watch?v=pYeekwv3vC4 (Note that other topics are largely skimmed over, such as CSRF protection. You should learn about other topics from other sources. Also note that "valid" usecases for JWTs at the end of the video can also be easily handled by other, better, and more secure tools. Specifically, PASETO.)

A related topic: Don't use localStorage (or sessionStorage) for authentication credentials, including JWT tokens: https://www.rdegges.com/2018/please-stop-using-local-storage/

The reason to avoid JWTs comes down to a couple different points:

The JWT specification is specifically designed only for very short-live tokens (~5 minute or less). Sessions

This document is now at https://gbdev.io/guides/tools.html, please go there instead. It's kept here to avoid breaking links and to preserve history.

Previous versions can be checked out by selecting the "Revisions" tab, and selecting "View file" in the three-dot drop-down menu.

I'm taking down this post. I just posted this as a side comment to explain a sentence on my latest blog post. This wasn't meant to be #1 on HN to start a huge war on functional programming... The thoughts are not well formed enough to have a huge audience. Sorry for all the people reading this. And please, don't dig through the history...

	#!/bin/bash

	# !!WARNING!!
	# This will DELETE all efforts you have put into configuring nix
	# Have a look through everything that gets deleted / copied over

	nix-env -e '.*'

	rm -rf $HOME/.nix-*
	rm -rf $HOME/.config/nixpkgs

	use std::collections::HashMap;
	use std::fmt;
	use std::io;
	use std::num::ParseFloatError;

	/*
	Types
	*/

	#[derive(Clone)]

	# Edit this configuration file to define what should be installed on
	# your system. Help is available in the configuration.nix(5) man page
	# and in the NixOS manual (accessible by running ‘nixos-help’).

	{ config, pkgs, ... }:

	{
	imports =
	[ # Include the results of the hardware scan.
	./hardware-configuration.nix