\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{Ruby Gray}
\pdfinfo{
  /Title (ruby.pdf)
  /Creator (Cheatography)
  /Author (Ruby Gray)
  /Subject (Ruby Cheat Sheet)
}

% Lengths and widths
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\addtolength{\voffset}{-2cm}
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\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% 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
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{CC342D}
\definecolor{LightBackground}{HTML}{FBF2F1}
\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{Ruby Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Ruby Gray} via \textcolor{DarkBackground}{\uline{cheatography.com/68488/cs/17257/}}}
\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}Ruby Gray \\
  \uline{cheatography.com/ruby-gray} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 10th October, 2018.\\
   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*}{4}

\begin{tabularx}{3.833cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{General Remarks about the Language}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{IRB is an interactive Ruby Shell good for starting out. (\$ irb)} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{3.833cm}}{Ruby does not need to be compiled (most of the time) since it is interpreted.} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{Everything in Ruby is an object.} \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{3.833cm}}{Ruby variables don't have types - only objects do.} \tn 
% Row Count 6 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{Ruby wants you to omit ()'s and ;'s} \tn 
% Row Count 7 (+ 1)
% Row 5
\SetRowColor{white}
\mymulticolumn{1}{x{3.833cm}}{Ruby will make you happy so enjoy.} \tn 
% Row Count 8 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{Control Structure}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{if {[}conditional{]} ... \newline else ... end \newline -{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}- \newline {[}conditional{]} ? true block ... : false block ... \newline -{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}- \newline if {[}conditional{]} ... \newline elsif {[}conditional{]} ... \newline else ... end \newline -{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}- \newline while {[}conditional{]} ... end \newline -{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}- \newline until {[}conditional{]} ... end \newline -{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}- \newline case someVar \newline when {[}condition{]} ... \newline when {[}condition{]} ... \newline (as many whens as needed) \newline else ... end \newline -{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}- \newline someVar.each do |x| ... end \newline someVar.each \{|x| ... \} \newline -{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}-{}- \newline for each x in someVar do ... end} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{x{1.61351 cm} x{1.81949 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Variable Classifications}}  \tn
% Row 0
\SetRowColor{LightBackground}
variable\_name & Local Variable \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
VARIABLE & Constant Variable \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
@variable\_name & Instance Variable \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
@@variable\_name & Class Variable \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
= & Assignment \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{3.833cm}}{Everything is an object so variables do not have explicit data types}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{x{1.09856 cm} x{2.33444 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Strings}}  \tn
% Row 0
\SetRowColor{LightBackground}
.length & Length of the String \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\seqsplit{.count(param)} & How many times the param appears in the String \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
.insert(pos, param) & Inserts the param in the position of the String \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
.upcase & Converts all characters to uppercase \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
.downcase & Converts all characters to lowercase \tn 
% Row Count 9 (+ 2)
% Row 5
\SetRowColor{white}
.swapcase & Converts all uppercase characters lowercase \& lowercase to uppercase \tn 
% Row Count 12 (+ 3)
% Row 6
\SetRowColor{LightBackground}
.reverse & Reverses the order of the characters \tn 
% Row Count 14 (+ 2)
% Row 7
\SetRowColor{white}
.split & Breakes up a String on whitespace and stores all those strings in an array \tn 
% Row Count 17 (+ 3)
% Row 8
\SetRowColor{LightBackground}
.chop & Removes the last character \tn 
% Row Count 18 (+ 1)
% Row 9
\SetRowColor{white}
.strip & Removes all whitespace, tabs, new lines \& carriage returns \tn 
% Row Count 21 (+ 3)
% Row 10
\SetRowColor{LightBackground}
.chomp & Removes the last character if it's a new line or carriage return \tn 
% Row Count 24 (+ 3)
% Row 11
\SetRowColor{white}
{[}start, end{]} & Returns a substring \tn 
% Row Count 25 (+ 1)
% Row 12
\SetRowColor{LightBackground}
.to\_i & Converts to integer \tn 
% Row Count 26 (+ 1)
% Row 13
\SetRowColor{white}
+ & Concatenates strings \tn 
% Row Count 27 (+ 1)
% Row 14
\SetRowColor{LightBackground}
\seqsplit{.index(position)} & Returns the character in the specified position \tn 
% Row Count 29 (+ 2)
% Row 15
\SetRowColor{white}
.clear & Removes all content \tn 
% Row Count 30 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{Function Structure}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{def methodName ... end \newline  \newline def methodName (param1, param2) ... end} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{No Return Statements.  \newline No need for ()'s with no parameters.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{p{0.6866 cm} x{2.7464 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Operators}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{Arithmetic} & Operators \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
+ & Addition \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
- & Subtraction \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
* & Multiplication \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
/ & Division \tn 
% Row Count 6 (+ 1)
% Row 5
\SetRowColor{white}
\% & Modulus \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
** & Exponent \tn 
% Row Count 8 (+ 1)
% Row 7
\SetRowColor{white}
Compare & Operators \tn 
% Row Count 9 (+ 1)
% Row 8
\SetRowColor{LightBackground}
== & Values Equal? \tn 
% Row Count 10 (+ 1)
% Row 9
\SetRowColor{white}
!= & Values Not Equal? \tn 
% Row Count 11 (+ 1)
% Row 10
\SetRowColor{LightBackground}
\textgreater{} & Left op greater than Right op? \tn 
% Row Count 12 (+ 1)
% Row 11
\SetRowColor{white}
\textless{} & Left op Less than Right op? \tn 
% Row Count 13 (+ 1)
% Row 12
\SetRowColor{LightBackground}
\textgreater{}= & Left op greater than or equal to Right op? \tn 
% Row Count 15 (+ 2)
% Row 13
\SetRowColor{white}
\textless{}= & Left op less than or equal to Right op? \tn 
% Row Count 17 (+ 2)
% Row 14
\SetRowColor{LightBackground}
\textless{}=\textgreater{} & Spaceship: returns 0 if ops are equal, 1 if Left op is greater than Right op and -1 if Left op is less than Right op \tn 
% Row Count 21 (+ 4)
% Row 15
\SetRowColor{white}
=== & A case comparative for when control structure \tn 
% Row Count 23 (+ 2)
% Row 16
\SetRowColor{LightBackground}
.eql? & Values Equal for both type and value? \tn 
% Row Count 25 (+ 2)
% Row 17
\SetRowColor{white}
.equal? & Values are the same object? \tn 
% Row Count 26 (+ 1)
% Row 18
\SetRowColor{LightBackground}
Logical & Operators \tn 
% Row Count 27 (+ 1)
% Row 19
\SetRowColor{white}
and, \&\& & AND \tn 
% Row Count 28 (+ 1)
% Row 20
\SetRowColor{LightBackground}
or, || & OR \tn 
% Row Count 29 (+ 1)
% Row 21
\SetRowColor{white}
not, ! & NOT \tn 
% Row Count 30 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{x{1.54485 cm} x{1.88815 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Arrays}}  \tn
% Row 0
\SetRowColor{LightBackground}
array = \seqsplit{Array.new(lengthParam)} & Creates array where each element is NIL \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
array = {[}element1, element2, ...{]} & Creates array with the specified elements \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
array{[}index{]} & Returns the element value at index \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
array.length & Returns the size of the array \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
array.push param \textless{}\textless{} & Adds the params as separate elements to the end of the array \tn 
% Row Count 11 (+ 3)
% Row 5
\SetRowColor{white}
array.pop & Removes the element from the end \tn 
% Row Count 13 (+ 2)
% Row 6
\SetRowColor{LightBackground}
array.unshift param & Adds the params as separate elements to the front \tn 
% Row Count 16 (+ 3)
% Row 7
\SetRowColor{white}
array.shift & Removes the element from the front \tn 
% Row Count 18 (+ 2)
% Row 8
\SetRowColor{LightBackground}
array.reverse & Reverses the order of elements \tn 
% Row Count 20 (+ 2)
% Row 9
\SetRowColor{white}
array.shuffle & Randomly shuffles up order of elements \tn 
% Row Count 22 (+ 2)
% Row 10
\SetRowColor{LightBackground}
array.sort & Sorts the array of elements \tn 
% Row Count 24 (+ 2)
% Row 11
\SetRowColor{white}
array.include? param & Returns true if the param exists in the array \tn 
% Row Count 27 (+ 3)
% Row 12
\SetRowColor{LightBackground}
array.uniq & Returns an array of only the unique elements \tn 
% Row Count 29 (+ 2)
% Row 13
\SetRowColor{white}
array.fill param & Sets all the array elements to the param \tn 
% Row Count 31 (+ 2)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{3.833cm}{x{1.54485 cm} x{1.88815 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Arrays (cont)}}  \tn
% Row 14
\SetRowColor{LightBackground}
array.each \{|x| ...\} & Iterates over each element in the array \tn 
% Row Count 2 (+ 2)
% Row 15
\SetRowColor{white}
array.each\_index\{|i| ...\} & iterates over each index in the array \tn 
% Row Count 4 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{3.833cm}}{A single array can hold elements of different object types.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{x{1.44186 cm} x{1.99114 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Ranges}}  \tn
% Row 0
\SetRowColor{LightBackground}
range = Range.new(start, end) & Creates a new Range from the starting point to the end point \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
range = start..end & Creates a range from start to end inclusive \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
range = start...end & Creates a range from start to end exclusive \tn 
% Row Count 7 (+ 2)
% Row 3
\SetRowColor{white}
range.to\_a & Converts a range to an array \tn 
% Row Count 9 (+ 2)
% Row 4
\SetRowColor{LightBackground}
range.each & Iterators through each element \tn 
% Row Count 11 (+ 2)
% Row 5
\SetRowColor{white}
\seqsplit{range.include?(param)} & Returns true if the param exists in the Range \tn 
% Row Count 13 (+ 2)
% Row 6
\SetRowColor{LightBackground}
range.last param & Returns the last element. Param can be added to provide more than just the last. \tn 
% Row Count 17 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{3.833cm}}{Above each function can be used with (start..end) or (start...end) as well}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{x{1.7165 cm} x{1.7165 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Hashes}}  \tn
% Row 0
\SetRowColor{LightBackground}
map = Hash.new & Creates an empty hash map \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
map = Hash.new(default) & Creates an empty hash map where if key or value cannot be found, default value is returned. \tn 
% Row Count 7 (+ 5)
% Row 2
\SetRowColor{LightBackground}
map = Hash{[}"key1" =\textgreater{} value1, "key2" =\textgreater{} value2, ...{]} & Creates a hash map with 2 key-value pairs \tn 
% Row Count 10 (+ 3)
% Row 3
\SetRowColor{white}
map = Hash{[}"key1" =\textgreater{} value1, "key2" =\textgreater{} value2, ...{]} & Creates a hash map with 2 key-value pairs \tn 
% Row Count 13 (+ 3)
% Row 4
\SetRowColor{LightBackground}
map{[}"key3"{]} = value3 & Adds a key-value pair to the map \tn 
% Row Count 15 (+ 2)
% Row 5
\SetRowColor{white}
map.has\_key? key & Returns true if the key exists as a key in the hash map \tn 
% Row Count 18 (+ 3)
% Row 6
\SetRowColor{LightBackground}
maps.has\_value? value & Returns true if the value exists as a value in the hash map \tn 
% Row Count 21 (+ 3)
% Row 7
\SetRowColor{white}
map.fetch key & Returns the value that corresponds to the key \tn 
% Row Count 24 (+ 3)
% Row 8
\SetRowColor{LightBackground}
map.delete param & Deletes the key-value pair with the key param \tn 
% Row Count 27 (+ 3)
% Row 9
\SetRowColor{white}
map.length & Returns the number of key-value pairs in the hash map \tn 
% Row Count 30 (+ 3)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{3.833cm}{x{1.7165 cm} x{1.7165 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Hashes (cont)}}  \tn
% Row 10
\SetRowColor{LightBackground}
map.keys & Returns an array of all the keys in the hash map \tn 
% Row Count 3 (+ 3)
% Row 11
\SetRowColor{white}
map.values & Returns an array of all the values in the hash map \tn 
% Row Count 6 (+ 3)
% Row 12
\SetRowColor{LightBackground}
map.sort & Sorts the keys of the hash map in alphabetical order \tn 
% Row Count 9 (+ 3)
% Row 13
\SetRowColor{white}
map.inspect & Returns the current state of the hash map \tn 
% Row Count 12 (+ 3)
% Row 14
\SetRowColor{LightBackground}
map.each \{|k, v| ... \} & Iterates over each key-value pair in the hash map \tn 
% Row Count 15 (+ 3)
% Row 15
\SetRowColor{white}
map.each\_key \{|k| ... \} & Iterates over each key in the hash map \tn 
% Row Count 17 (+ 2)
% Row 16
\SetRowColor{LightBackground}
map.each\_value \{|v| ... \} & Iterates over each value in the hash map \tn 
% Row Count 19 (+ 2)
% Row 17
\SetRowColor{white}
map.each\_value \{|v| ... \} & Iterates over each value in the hash map \tn 
% Row Count 21 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{Class Structure}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{class className1 \newline @instVariable \newline @@clssVariable \newline ... \newline attr\_accessor :instVariable  \newline .. \newline         def initialize \newline         ... \newline         end \newline     \newline         def classMethod1 param \newline         ... \newline         end \newline end \newline  \newline class className2 \newline ... \newline end} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{x{0.85825 cm} x{2.57475 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Class Details}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{Initialize} & A method that is called internally when .new is called to create the object. \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
\seqsplit{attr\_reader} & Instance variable getter \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{attr\_writer} & Instance variable setter \tn 
% Row Count 7 (+ 2)
% Row 3
\SetRowColor{white}
\seqsplit{attr\_accesor} & Instance variable getter and setter \tn 
% Row Count 9 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\seqsplit{className.new} & Method called to create the specified object \tn 
% Row Count 11 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{3.833cm}}{No overloading methods in Ruby.  \newline Multiple classes can be written in the same file.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}