zhengjia

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')

cobyism

Deploying a subfolder to GitHub Pages

Sometimes you want to have a subdirectory on the master branch be the root directory of a repository’s gh-pages branch. This is useful for things like sites developed with Yeoman, or if you have a Jekyll site contained in the master branch alongside the rest of your code.

For the sake of this example, let’s pretend the subfolder containing your site is named dist.

Step 1

Remove the dist directory from the project’s .gitignore file (it’s ignored by default by Yeoman).

sauloperez

# Signal catching
def shut_down
  puts "\nShutting down gracefully..."
  sleep 1
end

puts "I have PID #{Process.pid}"

# Trap ^C 
Signal.trap("INT") { 

chrismccoy

# alias to edit commit messages without using rebase interactive
# example: git reword commithash message
reword = "!f() {\n  GIT_SEQUENCE_EDITOR=\"sed -i 1s/^pick/reword/\" GIT_EDITOR=\"printf \\\"%s\\n\\\" \\\"$2\\\" >\" git rebase -i \"$1^\";\n git push -f;\n}; f"

# count total commits in a repo
git rev-list --all --count

# edit all commit messages 
git rebase -i --root

speric

Chapter 1 - Object Oriented Design

The purpose of design is to allow you to do design later, and it's primary goal is to reduce the cost of change.

SOLID Design:

• Single Responsibility Principle: a class should have only a single responsibility
• Open-Closed Principle: Software entities should be open for extension, but closed for modification (inherit instead of modifying existing classes).
• Liskov Substitution: Objects in a program should be replaceable with instances of their subtypes without altering the correctness of that program.
• Interface Segregation: Many client-specific interfaces are better than one general-purpose interface.

Integralist

Lambda: standard

# Creating a lambda
l = lambda { |name| "Hi #{name}!" }

# Executing the lambda
l.call("foo") # => Hi foo!

epoch

Queen Attack

In the game of chess, a queen can attack pieces which are on the same row, column, or diagonal.

A chessboard can be represented by an 8 by 8 array.

Write a program that positions two queens on a chess board and indicates whether or not they are positioned so that they can attack each other.

jayzz55

# Add poltergeist gem to Gemfile, in :test group,
# then run `bundle` to install
group :test do
  ...
  gem 'poltergeist'
  ...
end

jayzz55

###PT PLANNER ####Melbourne Public Transport Journey Planner

There are 3 train lines:

The Alamein line has the following stops: Flinders Street, Richmond, East Richmond, Burnley, Hawthorn, and Glenferrie.

The Glen Waverly line has the following stops: Flagstaff, Melbourne Central, Parliament, Richmond, Kooyong and Tooronga.

The Sandringham line has the following stops: Southern Cross, Richmond, South Yarra, Prahran, and Windsor.

mattswann

require 'minitest/autorun'
require 'minitest/reporters' # optional

Minitest::Reporters.use! Minitest::Reporters::SpecReporter.new() # optional

require_relative './allergies'


class AllergiesTest < MiniTest::Test