hack3r-0m

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

O(1) Block Propagation

The problem

Bitcoin miners want their newly-found blocks to propagate across the network as quickly as possible, because every millisecond of delay increases the chances that another block, found at about the same time, wins the "block race."

It is my opinion that tabs are better than spaces, especially when working in a team. Why you aks? When using tabs everyone has the ability to indent the code according to their own preference. If your teams decides on using spaces you also need to agree on how many spaces to use for an indent. Do you pick 2 spaces, 4 spaces or something else? Odds are, someone is not going to be happy with the team's decision.

Using tabs gives everyone the freedom to indent the code to their own liking. Most editors have an option to specify how many columns a tab should indent. This allows each team member to pick the setting they're most comfortable with.

To prevent (Git) diff nightmares just follow these simple steps:

Always follow the convention used in the project you're working on. If it is a legacy code base and uses 5 spaces for indenting code, use 5 spaces in the code you add or modify;
Have your editor (or Git pre-commit hook) strip all trailing whitespace from your files. Trailing whitespace serves no purpo

Arch Linux on Asus ZenBook UX303LB

Warning

This is a log how I installed and customized Arch linux on Asus ZenBook UX303LB. This is only log of what I did not what you should do! NO WARRANTY!

Specs

Intel Core i5 5200U
NVIDIA GeForce GT 940M

	<?php

	/**
	* This is free and unencumbered software released into the public domain.
	*
	* Anyone is free to copy, modify, publish, use, compile, sell, or
	* distribute this software, either in source code form or as a compiled
	* binary, for any purpose, commercial or non-commercial, and by any
	* means.
	*

	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
	<html>

	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<title>Single-Column Responsive Email Template</title>

	<style>
	@media only screen and (min-device-width: 541px) {
	.content {

	# taken from http://www.piware.de/2011/01/creating-an-https-server-in-python/
	# generate server.xml with the following command:
	# openssl req -new -x509 -keyout server.pem -out server.pem -days 365 -nodes
	# run as follows:
	# python simple-https-server.py
	# then in your browser, visit:
	# https://localhost:4443

	import BaseHTTPServer, SimpleHTTPServer
	import ssl

	Use: for testing against email regex
	ref: http://codefool.tumblr.com/post/15288874550/list-of-valid-and-invalid-email-addresses


	List of Valid Email Addresses

	[email protected]
	[email protected]
	[email protected]
	[email protected]

	contract Database{
	mapping(uint => uint) public _data;
	mapping(address => bool) _owners;

	function Database(address[] owners){ //Called once at creation, pass in initial owners
	for(uint i; i<owners.length; i++){
	_owners[owners[i]]=true;
	}
	}