Kemal C. ddeveloperr

Begin!

Senior programmers won't have a problem with these, while junior programmers will usually give only half-answers.

What is a class?

A text-book answer: classes are a blue-print for constructing computer models for real or virtual objects... boring.

In reality: classes hold data, have methods that interact with that data, and are used to instantiate objects.

How I Stay Up to Date on Rails

For last night's UW Advanced Rails last class I put together my short list for staying up to date with Ruby, Rails, and the Web Development community. Here's the list:

Ruby Weekly, HTML 5 Weekly, and Peter Cooper's other great e-newsletters
Ruby 5 podcast. Short, and perfect for commuting.
Ruby Rogues - a longer form podcast that has ruby rock-stars on it
Prismatic - something about their filtering / aggregation algorithm is the best. Friend me there to get started: Ivan Storck on Prismatic
Seattle.rb - The US's oldest Ruby group meets every week and has presentations 1x a month. Great networking and code help.

###Upgrade Node.js via NPM

sudo npm cache clean -f
sudo npm install -g n
sudo n stable

The n package represents a Node helper, and running the last command upgrades node to the latest stable version. Instead of using "stable", you could specify a desired version:


	/*Write a function countBs that takes a string as its only argument and returns a number that
	indicates how many uppercase “B” characters are in the string.

	Second, write a function called countChar that behaves like countBs, except it takes a second argument that
	indicates the character that is to be counted (rather than counting only uppercase "B" characters). Rewrite countBs to make use of this new function.*/

	var countBs, countChar;
	countBs = function(str) {
	return countChar(str, "B");

	/*Exercises
	14.1 Censored keyboard

	Between 1928 and 2013, Turkish law forbade the use of the letters Q, W, and X in official documents. This was part of a wider initiative to stifle Kurdish culture—those letters occur in the language used by Kurdish people but not in Istanbul Turkish.

	As an exercise in doing ridiculous things with technology, I’m asking you to program a text field (an <input type="text"> tag) that these letters cannot be typed into.*/

	<!doctype html>

	<input type="text">

	Railscasts videos all in one:

	http://media.railscasts.com/assets/episodes/videos/001-caching-with-instance-variables.mp4
	http://media.railscasts.com/assets/episodes/videos/002-dynamic-find-by-methods.mp4
	http://media.railscasts.com/assets/episodes/videos/003-find-through-association.mp4
	http://media.railscasts.com/assets/episodes/videos/004-move-find-into-model.mp4
	http://media.railscasts.com/assets/episodes/videos/005-using-with-scope.mp4
	http://media.railscasts.com/assets/episodes/videos/006-shortcut-blocks-with-symbol-to-proc.mp4
	http://media.railscasts.com/assets/episodes/videos/007-all-about-layouts.mp4
	http://media.railscasts.com/assets/episodes/videos/008-layouts-and-content-for.mp4

	Basic Syntax
	If you've already installed RVM, you should have the rvm command available to you. This is the way we call RVM.

	The basic syntax of the command is:

	rvm command_options command ruby_to_act_on
	There are also RVM flags that can alter the behavior of RVM, which are given in a similar way to command options.

	You can get a list of the available commands by typing:

	Commit messages:
	http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html
	http://who-t.blogspot.com/2009/12/on-commit-messages.html
	http://progit.org/book/ch5-2.html#commit_guidelines

	Linus on rebasing vs. merging and preserving history:
	http://article.gmane.org/gmane.comp.video.dri.devel/34744
	http://article.gmane.org/gmane.linux.acpi.devel/32901
	http://article.gmane.org/gmane.linux.kernel/638612
	http://article.gmane.org/gmane.linux.kernel/638628


	SSH 101 Tutorial

	An SSH key allows you to establish a secure connection between your computer and GitLab. Before generating an SSH key in your shell, check if your system already has one by running the following command:

	cat ~/.ssh/id_rsa.pub
	If you see a long string starting with ssh-rsa or ssh-dsa, you can skip the ssh-keygen step.

	Note: It is a best practice to use a password for an SSH key, but it is not required and you can skip creating a password by pressing enter. Note that the password you choose here can't be altered or retrieved.


	1. Check for SSH keys

	$ ls -al ~/.ssh
	# Lists the files in your .ssh directory, if they exist

	2. See it in terminal
	$ cat ~/.ssh/id_dsa.pub

	3. Copy your public key and paste it to github, gitbucket...