Aaron Dai mrvicadai

Ecrypt data using aes-256-cbc without salt

$ echo  'this is hello world'  | openssl  aes-256-cbc -a -nosalt -k hello
HEQ/s/mOMof648tJxJvvwtHUTcq2j021RbgvqLA02lY=
-a means encoding the output using base64
-nosalt force openssl do encryption without salt
-k the encryption key

Let's say you have an iOS project, and you want to use some external library, like AFNetworking. How do you integrate it?

With submodules

Add the project to your repo:

git submodule add [email protected]:AFNetworking/AFNetworking.git Vendor/AFNetworking

or something to that effect.

Commit Message Conventions

These rules are adopted from the AngularJS commit conventions.

Goals
Generating CHANGELOG.md
- Recognizing unimportant commits
- Provide more information when browsing the history
Format of the commit message
Subject line

A quick overview of the node.js streams interface with basic examples.

This is based on @brycebaril's presentation, Node.js Streams2 Demystified

Overview

Streams are a first-class construct in Node.js for handling data.

Think of them as as lazy evaluation applied to data.

npm v3.10 - ◾

Update npm itself

npm install -g npm
# Downgrade to a specific version
npm install -g npm@2

Exploring Entity Component Systems

In Elm Entity-Component-System (or ECS) is a pattern for designing programs that is prevalent in the games industry. This pattern consists of three simple parts:

Entity : A uniquely identifiable object that may contain any number of components
Component : A property usually representing the raw data of one aspect of the object. (Position is a component, Velocity is a component, Strength is a component, etc...)
System : A continuous process performing actions on every entity that possesses a component of the same aspect as that system

To understand this, let us try to make a simple example: Boxes that move in space:

	(*---------------------------------------------------------------------------
	Copyright (c) 2015 Daniel C. Bünzli. All rights reserved.
	Distributed under the BSD3 license, see license at the end of the file.
	%%NAME%% release %%VERSION%%
	---------------------------------------------------------------------------*)

	(* Simple generators according to:

	Kiselyov, Peyton-Jones, Sabry
	Lazy v. Yield: Incremental, Linear Pretty-printing

	# 0 is too far from ` ;)
	set -g base-index 1

	# Automatically set window title
	set-window-option -g automatic-rename on
	set-option -g set-titles on

	#set -g default-terminal screen-256color
	set -g status-keys vi
	set -g history-limit 10000

	type result('a) =
	\| Success('a)
	\| Failure(string);

	/* Encapsulate a parsing function in a type */
	type parser('a) =
	\| Parser(string => result(('a, string)));

	let reduce = (fn, list) =>
	switch list {

	// This works on all devices/browsers, and uses IndexedDBShim as a final fallback
	var indexedDB = window.indexedDB \|\| window.mozIndexedDB \|\| window.webkitIndexedDB \|\| window.msIndexedDB \|\| window.shimIndexedDB;

	// Open (or create) the database
	var open = indexedDB.open("MyDatabase", 1);

	// Create the schema
	open.onupgradeneeded = function() {
	var db = open.result;
	var store = db.createObjectStore("MyObjectStore", {keyPath: "id"});