ELLIOTTCABLE

What is the Strict Aliasing Rule and Why do we care?

(OR Type Punning, Undefined Behavior and Alignment, Oh My!)

What is strict aliasing? First we will describe what is aliasing and then we can learn what being strict about it means.

In C and C++ aliasing has to do with what expression types we are allowed to access stored values through. In both C and C++ the standard specifies which expression types are allowed to alias which types. The compiler and optimizer are allowed to assume we follow the aliasing rules strictly, hence the term strict aliasing rule. If we attempt to access a value using a type not allowed it is classified as undefined behavior(UB). Once we have undefined behavior all bets are off, the results of our program are no longer reliable.

Unfortunately with strict aliasing violations, we will often obtain the results we expect, leaving the possibility the a future version of a compiler with a new optimization will break code we th

Exporting your 2FA tokens from Authy to transfer them into another 2FA application

IMPORTANT - Update regarding deprecation of Authy desktop apps

Past August 2024, Authy stopped supported the desktop version of their apps:
See Authy is shutting down its desktop app | The 2FA app Authy will only be available on Android and iOS starting in August for details.

And indeed, after a while, Authy changed something in their backend which now prevents the old desktop app from logging in. If you are already logged in, then you are in luck, and you can follow the instructions below to export your tokens.

If you are not logged in anymore, but can find a backup of the necessary files, then restore those files, and re-install Authy 2.2.3 following the instructions below, and it should work as expected.

The Scammiest Scam To Yet Anonymity Scam

I'm still holding out for this being a hoax, a big joke, and that they're going to cancel the kickstarter any minute. It'd be quite the cute "lessons learned" about anonymity scams. However, I will be treating it from here on out as a genuine scam. (As of May 2nd, the kickstarter has been cancelled, after the strangest attempt to reply to this imaginable. Good riddance.)

This absolutely ridiculous thing was brought to my attention by a friend and since it was late at night I thought I must be delirious in how absurdly over the top fake it seemed. So I slept on it, woke up, and found that it had gotten a thousand dollars more funding and was every bit as flabbergasting as I thought it was.

Since I realize that not everyone has spent their entire lives studying computers – and such people are the targets of such scams –

	#!/bin/bash
	#!/bin/zsh
	# by joevt May 24/2023

	#=========================================================================================

	edid_decode=edid-decode

	#=========================================================================================
	# Modify EDID

	if (typeof exports === 'undefined') exports = {}

	function timer (repeats, func, delay) {
	var args = Array.prototype.slice.call(arguments, 2, -1)
	args.unshift(this)
	var boundFunc = func.bind.apply(func, args)
	var operation = $.NSBlockOperation.blockOperationWithBlock(boundFunc)
	var timer = $.NSTimer.timerWithTimeIntervalTargetSelectorUserInfoRepeats(
	delay / 1000, operation, 'main', null, repeats
	)

	# -- coding: utf-8 --
	# Properly align LaTeX images to baseline
	# Copyright (c) 2016, Artem Leshchev <matshch@gmail.com>

	# Permission is hereby granted, free of charge, to any person obtaining a copy
	# of this software and associated documentation files (the "Software"), to deal
	# in the Software without restriction, including without limitation the rights
	# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	# copies of the Software, and to permit persons to whom the Software is furnished
	# to do so, subject to the following conditions:

	---------
	-- Convert Things (from Cultured Code) database to CSV
	-- https://culturedcode.com/things/
	--
	-- Version 1.0
	--
	-- This script produces two CSVs on the user's Desktop. One for todos and the other for projects.
	-- It requires that Things.app is installed.
	--
	-- Things todos and projects can be tied either using the project name in the todos CSV or better

	<html>
	<head>
	<title>{Title}</title>
	<link rel="shortcut icon" href="{Favicon}">
	<link rel="alternate" type="application/rss+xml" href="{RSS}">
	<link rel="stylesheet" type="text/css"
	href= "http://static.tumblr.com/xxqfjcb/UhBnrqih4/template.css">
	<style type="text/css" media="screen">
	{CustomCSS}
	</style>

	#!/bin/sh

	# First, set the width/height DPI on the file
	sips -s dpiWidth 144 -s dpiHeight 144 "$1"

	# Fake that it is a screen capture (wat?)
	xattr -wx com.apple.metadata:kMDItemIsScreenCapture "62 70 6C 69 73 74 30 30 09 08 00 00 00 00 00 00 01 01 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 09" "$1"
	xattr -wx com.apple.metadata:kMDItemScreenCaptureType "62 70 6C 69 73 74 30 30 59 73 65 6C 65 63 74 69 6F 6E 08 00 00 00 00 00 00 01 01 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 12" "$1"
	xattr -wx com.apple.FinderInfo "00 00 00 00 00 00 00 00 00 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00" "$1"

	[ -n "${VAR##[NFnf]*}" ] && echo '$VAR must be truthy (but will be considered falsey by default, if empty)'
	[ -z "${VAR##[YTyt]*}" ] && echo '$VAR must be truthy (and will be by default, if empty)'
	[ -z "${VAR##[NFnf]*}" ] && echo '$VAR must be falsey (and will be by default, if empty)'
	[ -n "${VAR##[YTyt]*}" ] && echo '$VAR must be falsey (but will be considered truthy by default, if empty)'