Partho Biswas partho-maple

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

Clarify and agree on the scope of the system

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

Summary of book "Clean Architecture" by Robert C. Martin

Uncle Bob, the well known author of Clean Code, is coming back to us with a new book called Clean Architecture which wants to take a larger view on how to create software.

Even if Clean Code is one of the major book around OOP and code design (mainly by presenting the SOLID principles), I was not totally impressed by the book.

Clean Architecture leaves me with the same feeling, even if it's pushing the development world to do better, has some good stories and present robust principles to build software.

The book is build around 34 chapters organised in chapters.

I heard from GitHub Two-Factor Authentication](https://github.com/blog/1614-two-factor-authentication) nearly a couple of days ago when I was reading my RSS feed. I enabled it and couldn' push to any of my repositories anymore. Learn in this blog post how to fix it.

Two-Factor Authentication

"Is a process involving two stages to verify the identity of an entity trying to access services in a computer or in a network". Github solves this authentication with sending an SMS to a device which wants to push to their platform.

Enabling Two-Factor Authentication

LLDB Cheat Sheet

A complete gdb to lldb command map.

Print out

Print object

(lldb) po responseObject
(lldb) po [responseObject objectForKey@"state"]

p - Print primitive type

Remove MySQL completely

Open the Terminal
Use mysqldump to backup your databases
Check for MySQL processes with: ps -ax | grep mysql
Stop and kill any MySQL processes
Analyze MySQL on HomeBrew:

brew remove mysql

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

	<key>NSAppTransportSecurity</key>
	<dict>
	<key>NSExceptionDomains</key>
	<dict>
	<key>qbox.me</key>
	<dict>
	<key>NSIncludesSubdomains</key>
	<true/>
	<key>NSExceptionAllowsInsecureHTTPLoads</key>
	<true/>

	######################
	# Options
	######################

	REVEAL_ARCHIVE_IN_FINDER=false

	FRAMEWORK_NAME="${PROJECT_NAME}"

	SIMULATOR_LIBRARY_PATH="${BUILD_DIR}/${CONFIGURATION}-iphonesimulator/${FRAMEWORK_NAME}.framework"

	#!/usr/bin/env ruby
	#
	# CLI tool for locating and removing a Homebrew installation
	# http://brew.sh/
	#
	# Copyright (C) 2014 Stephen C. Benner
	#
	# This program is free software: you can redistribute it and/or modify
	# it under the terms of the GNU General Public License as published by
	# the Free Software Foundation, either version 3 of the License, or