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rails s -b $IP -p $PORT

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config.after :all do
  ActiveRecord::Base.subclasses.each(&:delete_all)
end

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Tabs and Windows

Function	Shortcut
Previous Tab	⌘+ Left Arrow
Next Tab	⌘+ Right Arrow
Go to Tab	⌘ + Number
Go to Window	⌘ + Option + Number
Go to Split Pane by Direction	⌘ + Option + Arrow
Go to Split Pane by Order of Use	⌘ + ] , ⌘ + [

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syntax enable
set tabstop=2
set softtabstop=2
set expandtab
set number
set showcmd
set cursorline
set wildmenu
set lazyredraw
set showmatch

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#!/bin/bash

# Add me to your .bashrc file (except for the shebang at the top of this file)
# Usage: `create_new_specs_branch <name_of_new_branch>`
# Example: `create_new_specs_branch quiz_spec`

create_new_specs_branch() {
  cd ~/code/canvas-lms-local # <--- change this path according to your setup
  printf "\nI moved you into $(pwd). You're welcome.\n"

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        undefined method `workflow_state' for nil:NilClass
        /var/web/canvas/releases/2015-07-16_174812_26b4ef4a508d509b/app/controllers/quizzes/quiz_submissions_api_controller.rb:176:in `index'
/var/web/canvas/releases/2015-07-16_174812_26b4ef4a508d509b/vendor/cache/rails-b344986bc3d9/actionpack/lib/action_controller/metal/implicit_render.rb:4:in `send_action'
/var/web/canvas/releases/2015-07-16_174812_26b4ef4a508d509b/vendor/cache/rails-b344986bc3d9/actionpack/lib/abstract_controller/base.rb:167:in `process_action'
/var/web/canvas/releases/2015-07-16_174812_26b4ef4a508d509b/vendor/cache/rails-b344986bc3d9/actionpack/lib/action_controller/metal/rendering.rb:10:in `process_action'
/var/web/canvas/releases/2015-07-16_174812_26b4ef4a508d509b/vendor/cache/rails-b344986bc3d9/actionpack/lib/abstract_controller/callbacks.rb:18:in `block in process_action'
/var/web/canvas/releases/2015-07-16_174812_26b4ef4a508d509b/vendor/cache/rails-b344986bc3d9/activesupport/lib/active_support/callbacks.rb:735:in `block (2 l

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   y - stash this hunk
   n - do not stash this hunk
   q - quit; do not stash this hunk or any of the remaining ones
   a - stash this hunk and all later hunks in the file
   d - do not stash this hunk or any of the later hunks in the file
   g - select a hunk to go to
   / - search for a hunk matching the given regex
   j - leave this hunk undecided, see next undecided hunk
   J - leave this hunk undecided, see next hunk
   k - leave this hunk undecided, see previous undecided hunk

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=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')

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Sublime Text 2 – Useful Shortcuts (Mac OS X)

General

⌘T	go to file
⌘⌃P	go to project
⌘R	go to methods
⌃G	go to line
⌘KB	toggle side bar
⌘⇧P	command prompt

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describe FunctionalInterface do
	before :all do
	  @implementations =
	    ObjectSpace.each_object(Class)
	      .select { |klass| klass < FunctionalInterface }
	end

	it "should enforce that the interface is implemented" do
	  @implementations.each do |klass|
	    entity = klass.new