\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{laurennicoleroth}
\pdfinfo{
  /Title (rubyforbeginners.pdf)
  /Creator (Cheatography)
  /Author (laurennicoleroth)
  /Subject (RubyForBeginners Cheat Sheet)
}

% Lengths and widths
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% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
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\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
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\definecolor{LightBackground}{HTML}{F9F1EF}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{RubyForBeginners Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{laurennicoleroth} via \textcolor{DarkBackground}{\uline{cheatography.com/26292/cs/7316/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}laurennicoleroth \\
  \uline{cheatography.com/laurennicoleroth} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 25th February, 2016.\\
   Updated 12th May, 2016.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{x{2.43873 cm} x{2.53827 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Ruby Variables}}  \tn
% Row 0
\SetRowColor{LightBackground}
local variable & local\_variable \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
instance variable & @instance\_variable \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
class variable & @@class\_variable \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
global variable & \$global\_variable \tn 
% Row Count 4 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.84149 cm} x{3.13551 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Ruby Data Types}}  \tn
% Row 0
\SetRowColor{LightBackground}
String & `"Sequence of characters."` or `'Sequence of characters.'` \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
Symbol (identifier) & `:a\_symbol, :another\_symbol, :name` \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
Integer & `42, 100, 1002, -256` \tn 
% Row Count 6 (+ 1)
% Row 3
\SetRowColor{white}
Float (floating point) & `1.1, 3.1415926, 5.5, -128.6` \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
Numeric Methods & `+, -, *, /, \%` \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
Comparison Operators & `==, !=, \textgreater{}, \textgreater{}=, \textless{}, \textless{}=` \tn 
% Row Count 12 (+ 2)
% Row 6
\SetRowColor{LightBackground}
Return Value & Last line of a ruby method/block/expression in IRB \tn 
% Row Count 14 (+ 2)
% Row 7
\SetRowColor{white}
Boolean & `true` or `false` \tn 
% Row Count 15 (+ 1)
% Row 8
\SetRowColor{LightBackground}
`nil` & counts as false in Ruby, everything counts as true \tn 
% Row Count 17 (+ 2)
% Row 9
\SetRowColor{white}
Array (0 indexed) & `letters = {[}"a", "b", "c"{]}` \tn 
% Row Count 19 (+ 2)
% Row 10
\SetRowColor{LightBackground}
`letters{[}2{]}` & \#returns "c" \tn 
% Row Count 20 (+ 1)
% Row 11
\SetRowColor{white}
`letters{[}1{]} = "monkey"` & `{[}"a", "monkey", "c"{]}` \tn 
% Row Count 22 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.54287 cm} x{3.43413 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{ERB}}  \tn
% Row 0
\SetRowColor{LightBackground}
ERB & Embedded Ruby for making dynamic HTML templates \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
`erb :hello` & Sinatra looks in "views" folder for hello.erb file \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
Show @tweets & \textless{}\% if @tweets \%\textgreater{}   \textless{}\% @tweets.each do |tweet| \%\textgreater{}     \textless{}p\textgreater{}\textless{}\%= tweet \%\textgreater{}\textless{}/p\textgreater{}   \textless{}\% end \%\textgreater{} \textless{}\% end \%\textgreater{} \tn 
% Row Count 8 (+ 4)
% Row 3
\SetRowColor{white}
Instance Variables & Any instance variables you declare in your routes, will be accessible in these erb files \tn 
% Row Count 12 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.18988 cm} x{2.78712 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Ruby Expressions}}  \tn
% Row 0
\SetRowColor{LightBackground}
`seen\_it = "seen again"` & Save string to variable \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
`num = 3` & Save integer to variable \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`other\_num = 5` & Save another integer to another variable \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
`answer = (num + other\_num) * 6` & Save result of adding/multiplying. \tn 
% Row Count 8 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.04057 cm} x{2.93643 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{String Interpolation}}  \tn
% Row 0
\SetRowColor{LightBackground}
`dog\_speak = "woof!"` & `puts "Dogs say \#\{dog\_speak\}"` \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
or & `puts "Dogs say " + dog\_speak` \tn 
% Row Count 4 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{0.89586 cm} x{4.08114 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Conditionals}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{if/else} & `if input == admin\_password` \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
 & `admin\_logged\_in = true` \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
 & `else` \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
 & `puts "Sorry, wrong password."` \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
 & `end` \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{0.94563 cm} x{4.03137 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Useful Ruby Methods}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{`split`} & Breaks a string into an array. \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
`join` & Takes an array and joins into a string. \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{`upcase`} & Makes characters capital letters. \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
\seqsplit{`reverse`} & Reverse characters in a string. \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\seqsplit{`sample`} & Randomly choose element. \tn 
% Row Count 9 (+ 2)
% Row 5
\SetRowColor{white}
`map` & Do the same thing to every element. \tn 
% Row Count 11 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.53827 cm} x{2.43873 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Research}}  \tn
% Row 0
\SetRowColor{LightBackground}
Cmd+Click (Mac) or Ctrl+Click & Open links in new tabs. \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
ruby-doc.org ("The Ruby Docs") & Ruby coding best practices. \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
Stack Overflow & Oops. Research your error. \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
Guides and blog posts & Has someone done this before? \tn 
% Row Count 8 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.9908 cm} x{2.9862 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Sinatra}}  \tn
% Row 0
\SetRowColor{LightBackground}
Sinatra & Framework for building a web server written in Ruby \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
Routing & Action taken in response to request \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
Path & text and slashes after domain \tn 
% Row Count 7 (+ 2)
% Row 3
\SetRowColor{white}
\seqsplit{http://localhost:4567/hello} & Sinatra looks for `get '/hello'` \tn 
% Row Count 9 (+ 2)
% Row 4
\SetRowColor{LightBackground}
 & `get '/hello' do` \tn 
% Row Count 10 (+ 1)
% Row 5
\SetRowColor{white}
 & `\#code to return a response to the browser` \tn 
% Row Count 12 (+ 2)
% Row 6
\SetRowColor{LightBackground}
 & `end` \tn 
% Row Count 13 (+ 1)
% Row 7
\SetRowColor{white}
String Response & `get '/hello'` \tn 
% Row Count 14 (+ 1)
% Row 8
\SetRowColor{LightBackground}
 & `"Hello, friendly web traveler!"` \tn 
% Row Count 16 (+ 2)
% Row 9
\SetRowColor{white}
 & `end` \tn 
% Row Count 17 (+ 1)
% Row 10
\SetRowColor{LightBackground}
HTML File Response & `get '/hello' do` \tn 
% Row Count 19 (+ 2)
% Row 11
\SetRowColor{white}
 & `erb :hello` \tn 
% Row Count 20 (+ 1)
% Row 12
\SetRowColor{LightBackground}
 & `end` \tn 
% Row Count 21 (+ 1)
% Row 13
\SetRowColor{white}
Get tweets route & `get '/' do` \tn 
% Row Count 22 (+ 1)
% Row 14
\SetRowColor{LightBackground}
 & `@tweets = \seqsplit{\$client.user\_timeline.map} \{ |tweet| tweet.text \}` \tn 
% Row Count 25 (+ 3)
% Row 15
\SetRowColor{white}
 & `erb :index` \tn 
% Row Count 26 (+ 1)
% Row 16
\SetRowColor{LightBackground}
 & `end` \tn 
% Row Count 27 (+ 1)
% Row 17
\SetRowColor{white}
`Redirect '/'` & Get server to run code in get '/' route \tn 
% Row Count 29 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.64241 cm} x{3.33459 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Array Methods}}  \tn
% Row 0
\SetRowColor{LightBackground}
`push` & Add to end of array: `letters \textless{}\textless{} "elephant"` or \seqsplit{`letters.push("elephant")`} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
`\textless{}\textless{}` & Shovel operator. Push to end of array. \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`unshift` & Add element to beginning of array: \seqsplit{`letters.unshift("zebra")`} \tn 
% Row Count 8 (+ 3)
% Row 3
\SetRowColor{white}
`pop` & Remove from end of array. `letters.pop` \tn 
% Row Count 10 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`shift` & Remove from start of array. `letters.shift` \tn 
% Row Count 12 (+ 2)
% Row 5
\SetRowColor{white}
\seqsplit{`.method(arguments)`} & Call a method with arguments. Some methods require no arguments. \tn 
% Row Count 15 (+ 3)
% Row 6
\SetRowColor{LightBackground}
\seqsplit{`letters.pop`} & Method without arguments. \tn 
% Row Count 16 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.23965 cm} x{2.73735 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Hashes}}  \tn
% Row 0
\SetRowColor{LightBackground}
Instantiate a Hash (hash rockets) & `person = \{:name =\textgreater{} "Lauren", :age =\textgreater{} 89, :sex =\textgreater{} "female"\}` \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
Instantiate a Hash (shortcut) & `person = \{name: "Lauren", age: 89, sex: "female"\}` \tn 
% Row Count 6 (+ 3)
% Row 2
\SetRowColor{LightBackground}
Access value by key. & `person{[}:name{]}  \# returns "Lauren"` \tn 
% Row Count 8 (+ 2)
% Row 3
\SetRowColor{white}
Update value by key. & `person{[}:age{]} = 12` \tn 
% Row Count 10 (+ 2)
% Row 4
\SetRowColor{LightBackground}
Insert key, value pair. & `person{[}:gender{]} = "cis female"` \tn 
% Row Count 12 (+ 2)
% Row 5
\SetRowColor{white}
Remove value by key. & `person.delete(:sex)  \# returns "female"` \tn 
% Row Count 14 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.23965 cm} x{2.73735 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Methods}}  \tn
% Row 0
\SetRowColor{LightBackground}
Greeting Method Accepts Name & `def \seqsplit{create\_greeting(name)`} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
 & `return "Welcome, \#\{name\}"` \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
 & `end` \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
Call Greeting Method & \seqsplit{`create\_greeting("Lauren")`} \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
 & `\#returns 'Welcome, Lauren"` \tn 
% Row Count 9 (+ 2)
% Row 5
\SetRowColor{white}
Upcase On Call To Greeting Method & \seqsplit{`create\_greeting("Lauren")}.upcase` \tn 
% Row Count 11 (+ 2)
% Row 6
\SetRowColor{LightBackground}
Arguments & Input given to methods. \tn 
% Row Count 13 (+ 2)
% Row 7
\SetRowColor{white}
Parameters & Define what can be passed to a method. \tn 
% Row Count 15 (+ 2)
% Row 8
\SetRowColor{LightBackground}
Return value & Output from a function \tn 
% Row Count 16 (+ 1)
% Row 9
\SetRowColor{white}
Implicit Return & Returning last line of method without explicit "return" \tn 
% Row Count 19 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.84149 cm} x{3.13551 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Command Line}}  \tn
% Row 0
\SetRowColor{LightBackground}
Ruby gems & Download, install, and use ruby software packages on your system \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
`\$ ruby -v` & Get Ruby Version \tn 
% Row Count 4 (+ 1)
% Row 2
\SetRowColor{LightBackground}
`\$ irb` & Load up interactive Ruby \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
`\$ gem install sinatra` & Install sinatra gem \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`\$ gem install twitter` & Install twitter gem \tn 
% Row Count 9 (+ 2)
% Row 5
\SetRowColor{white}
`\$ ruby server.rb` & Tell Ruby interpreter to run code. \tn 
% Row Count 11 (+ 2)
% Row 6
\SetRowColor{LightBackground}
Ctrl+C & Stop server from running. \tn 
% Row Count 12 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.43873 cm} x{2.53827 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Web and HTTP}}  \tn
% Row 0
\SetRowColor{LightBackground}
Server & has IP address, processes requests made by the (client) browser \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
HTTP & protocol enabling communication between clients and servers \tn 
% Row Count 7 (+ 3)
% Row 2
\SetRowColor{LightBackground}
HTTP Verbs & `GET, POST, PUT, PATCH, DELETE` \tn 
% Row Count 9 (+ 2)
% Row 3
\SetRowColor{white}
GET & Request Tweets(data) from Twitter API \tn 
% Row Count 11 (+ 2)
% Row 4
\SetRowColor{LightBackground}
POST & Submit Tweet(data) to Twitter API \tn 
% Row Count 13 (+ 2)
% Row 5
\SetRowColor{white}
https: & scheme \tn 
% Row Count 14 (+ 1)
% Row 6
\SetRowColor{LightBackground}
twitter.com & domain \tn 
% Row Count 15 (+ 1)
% Row 7
\SetRowColor{white}
\seqsplit{lauren\_n\_roth/status/699996428429561856} & path \tn 
% Row Count 18 (+ 3)
% Row 8
\SetRowColor{LightBackground}
Params hash & `params{[}:tweet{]}` \tn 
% Row Count 19 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.84149 cm} x{3.13551 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Loops}}  \tn
% Row 0
\SetRowColor{LightBackground}
times & `10.times do` \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
 & `puts "Hello!"` \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
 & `end` \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
times loop with counter & `10.times do |counter|` \tn 
% Row Count 5 (+ 2)
% Row 4
\SetRowColor{LightBackground}
 & `puts "\#\{counter\}"` \tn 
% Row Count 6 (+ 1)
% Row 5
\SetRowColor{white}
 & `end` \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
`each ` & `letters = {[}"a", "b", "c"{]}` \tn 
% Row Count 9 (+ 2)
% Row 7
\SetRowColor{white}
 & `letters.each do |letter|` \tn 
% Row Count 11 (+ 2)
% Row 8
\SetRowColor{LightBackground}
 & `puts "Letter \#\{letter\}"` \tn 
% Row Count 12 (+ 1)
% Row 9
\SetRowColor{white}
 & `end` \tn 
% Row Count 13 (+ 1)
% Row 10
\SetRowColor{LightBackground}
`map` & `capital\_letters = letters.map do |letter|` \tn 
% Row Count 15 (+ 2)
% Row 11
\SetRowColor{white}
 & `letter.upcase` \tn 
% Row Count 16 (+ 1)
% Row 12
\SetRowColor{LightBackground}
 & `end` \tn 
% Row Count 17 (+ 1)
% Row 13
\SetRowColor{white}
block style & `letters.each \{ |letter| puts "Upcase \#\{letter.upcase\}!" \}` \tn 
% Row Count 20 (+ 3)
% Row 14
\SetRowColor{LightBackground}
elegant map method & `capitals = letters.map \{ |letter| letter.upcase \}` \tn 
% Row Count 23 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.43873 cm} x{2.53827 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Twitter API}}  \tn
% Row 0
\SetRowColor{LightBackground}
Download files & \seqsplit{bit.ly/dbc-twitter-sinatra} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Sign Up To Use Twitter API & apps.twitter.com \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
Create New App & 1. Create new App 2. Create Access Tokens 3. Ensure permissions are read/write \tn 
% Row Count 8 (+ 4)
% Row 3
\SetRowColor{white}
Set up Twitter \$client global variable & `require twitter` \tn 
% Row Count 10 (+ 2)
% Row 4
\SetRowColor{LightBackground}
 & `\$client = \seqsplit{Twitter::REST::Client}.new do |config|` \tn 
% Row Count 13 (+ 3)
% Row 5
\SetRowColor{white}
 & \seqsplit{`config.consumer\_key}        = \seqsplit{"YOUR\_CONSUMER\_KEY"}   \seqsplit{config.consumer\_secret}     = \seqsplit{"YOUR\_CONSUMER\_SECRET"}   \seqsplit{config.access\_token}        = \seqsplit{"YOUR\_ACCESS\_TOKEN"}   \seqsplit{config.access\_token\_secret} = \seqsplit{"YOUR\_ACCESS\_SECRET"`} \tn 
% Row Count 24 (+ 11)
% Row 6
\SetRowColor{LightBackground}
 & `end` \tn 
% Row Count 25 (+ 1)
% Row 7
\SetRowColor{white}
Get user timeline & \seqsplit{`\$client.user\_timeline`} \tn 
% Row Count 27 (+ 2)
% Row 8
\SetRowColor{LightBackground}
Send tweet & \seqsplit{`\$client.update("omg} I am tweeting from the command line. So cool!")` \tn 
% Row Count 31 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}