SingularityMatrix

My thoughts on MessagePack

Hi. My name is Sadayuki "Sada" Furuhashi. I am the author of the MessagePack serialization format as well as its implementation in C/C++/Ruby.

Recently, MessagePack made it to the front page of Hacker News with this blog entry by Olaf, the creator of the Facebook game ZeroPilot. In the comment thread, there were several criticisms for the blog post as well as MessagePack itself, and I thought this was a good opportunity for me to address the questions and share my thoughts.

My high-level response to the comments

To the best of my understanding, roughly speaking, the criticisms fell into the following two categories.

Rails Migration

http://guides.rubyonrails.org/migrations.html

Migrations methods:

add_column
add_index
change_column
change_table
create_table
drop_table

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

Efficient Web Applications with Erlang and Cowboy

The Web Yesterday

Ugly, static, non-interactive.

Today

Tons of dynamic content, messaging, real time API and content for the user.

Grab new backup of database

Command: heroku pgbackups:capture --remote production

Response: >>> HEROKU_POSTGRESQL_COLOR_URL (DATABASE_URL) ----backup---> a712

Get url of backup download

Command: heroku pgbackups:url [db_key] --remote production

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

How many servings should I eat per day?

Fruit = 1-2 servings
Animal protein = 4 - 6 servings
Healthy fats = 5 - 9 servings
Healthy vegetables = 6 - 11 servings

How should I allocate my calories per day?

Healthy fats = 50%

Clone this Gist.
For card sizes other than A5, edit the size value in @page, and the height and width properties of body.
Add contents to each face. The simplest approach is to add an image called front.png of the same dimensions as the card.
Generate a PDF from the HTML + CSS. If using Prince, it's as simple as prince index.html card.pdf.
Take the PDF to a printer, and ask them to print as many copies as you need.

Arch Linux VM Setup

Beginner's Guide

Following the steps found on the Arch wiki: https://wiki.archlinux.org/index.php/Beginners%27_Guide

set font

	# UPD from 2018:
	# This gist was written for pre-1.0 version of Elixir and won't work on post-1.0 versions.
	# You probably consider using something else!

	defmodule SecureRandom do
	@moduledoc """
	Ruby-like SecureRandom module.

	## Examples