Ivor ivorpad

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

Stores data elements based on an sequential, most commonly 0 based, index.
Based on tuples from set theory.

	class Shape
	attr_accessor :color

	def initialize(color = nil)
	@color = color \|\| 'Red'
	end

	def larger_than?(shapeType)
	if self.area >= shapeType.area
	true

	require 'date'

	# Actually doesn't matter WHAT you choose as the epoch, it
	# won't change the algorithm. Just don't change it after you
	# have cached computed scores. Choose something before your first
	# post to avoid annoying negative numbers. Choose something close
	# to your first post to keep the numbers smaller. This is, I think,
	# reddit's own epoch.
	$our_epoch = Time.local(2005, 12, 8, 7, 46, 43).to_time

	=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')

	<?php
	/*
	Register Fonts
	*/
	function studio_fonts_url() {
	$font_url = '';

	/*
	Translators: If there are characters in your language that are not supported
	by chosen font(s), translate this to 'off'. Do not translate into your own language.

	# Scope: http://guides.rubyonrails.org/active_record_querying.html#scopes
	scope :visible_to, -> (user) { user ? all : where(private: false) }

	# Using a Scope is fine and is actually encouraged, this is just to remember how to read it.
	def self.visible_to(user)
	if user
	#Wiki.all
	all
	else
	#Wiki.where(private: false)

	# Filter backtrace from RSpec
	config.backtrace_exclusion_patterns = [%r{\.rvm/gems/}]

	// Use Gists to store code you would like to remember later on
	console.log(window); // log the "window" object to the console

	# Run Rails Server Daemon
	rails s -d

	# Kill server
	kill -INT ruby (tab)

	# Expands Emmet with Tab in ERB files.
	# Go to Atom/Open Your Keymap and paste this line.

	'atom-text-editor[data-grammar="text html erb"]:not([mini])':
	'tab': 'emmet:expand-abbreviation-with-tab'