Bruce Park treble37

Git Submodules basic explanation

Why submodules?

In Git you can add a submodule to a repository. This is basically a repository embedded in your main repository. This can be very useful. A couple of advantages of using submodules:

You can separate the code into different repositories.

Using Git

Global Settings

Related Setup: https://gist.github.com/hofmannsven/6814278

Related Pro Tips: https://ochronus.com/git-tips-from-the-trenches/

This guide assumes that you recently run brew upgrade postgresql and discovered to your dismay that you accidentally bumped from one major version to another: say 9.3.x to 9.4.x. Yes, that is a major version bump in PG land.

First let's check something.

brew info postgresql

The top of what gets printed as a result is the most important:

###Quick links to get started:

http://nithinbekal.com/posts/rails-presenters/

http://eewang.github.io/blog/2013/09/26/presenting-the-rails-presenter-pattern/

Thoughts about Rails Presenters

This is a collection of links, examples and rants about Presenters/Decorators in Rails.

Algorithms: Design and Analysis, Part 2

The course will have six weeks of lectures and assignments, followed by a final exam.

Week 1

I. TWO MOTIVATING APPLICATIONS

Distributed shortest-path routing -- sending email messages

GeoPlanet data with ancestor chain cache imported in 10 minutes

Yahoo! provides its GeoPlanet data as three separate TSV files, available for download here.

That's a database with some 17 million records:

5.7 million records: locations (aka places).
2.2 million records: alternative names for each place (aka aliases).
9.6 million records: matrix of neighbourhoods per place (aka adjacencies).

Rails Rspec APIs Testing Notes

Folders Structure

  spec
  |--- apis #do not put into controllers folder. 
        |--- your_api_test_spec.rb  
  |--- controllers
  |--- models
  |--- factories
 |--- views

	require 'fiddle'
	public def class=(new_class)
	obj_ptr = Fiddle::Pointer.new 2*self.object_id
	klass_ptr = Fiddle::Pointer.new 2*new_class.object_id
	obj_ptr[8, 8] = klass_ptr.ref[0, 8]
	end

	class A
	attr_accessor :a, :b, :c
	end

	#!/usr/bin/env ruby
	require "openssl"
	require 'digest/sha2'
	require 'base64'

	# We use the AES 256 bit cipher-block chaining symetric encryption
	alg = "AES-256-CBC"

	# We want a 256 bit key symetric key based on some passphrase
	digest = Digest::SHA256.new

	# Video: http://rubyhoedown2008.confreaks.com/08-chris-wanstrath-keynote.html

	Hi everyone, I'm Chris Wanstrath.

	When Jeremy asked me to come talk, I said yes. Hell yes. Immediately. But
	then I took a few moments and thought, Wait, why? Why me? What am I supposed
	to say that's interesting? Something about Ruby, perhaps. Maybe the
	future of it. The future of something, at least. That sounds
	keynote-y.