\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{cheatKing}
\pdfinfo{
  /Title (elm.pdf)
  /Creator (Cheatography)
  /Author (cheatKing)
  /Subject (elm Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\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}{A3A3A3}
\definecolor{LightBackground}{HTML}{F3F3F3}
\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{elm Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{cheatKing} via \textcolor{DarkBackground}{\uline{cheatography.com/22980/cs/4911/}}}
\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}cheatKing \\
  \uline{cheatography.com/cheatking} \\
  \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 13th 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}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Basic Type}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{-{}- Boolean \newline % Row Count 1 (+ 1)
True  : Bool \newline % Row Count 2 (+ 1)
False : Bool \newline % Row Count 3 (+ 1)
42    : number   \newline % Row Count 4 (+ 1)
-{}- Int or Float depending on usage \newline % Row Count 5 (+ 1)
3.14  : Float \newline % Row Count 6 (+ 1)
'a'   : Char \newline % Row Count 7 (+ 1)
"abc" : String \newline % Row Count 8 (+ 1)
-{}- multi-line String \newline % Row Count 9 (+ 1)
""" \newline % Row Count 10 (+ 1)
This is useful for holding JSON or other \newline % Row Count 11 (+ 1)
content that has "quotation marks". \newline % Row Count 12 (+ 1)
"""% Row Count 13 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Comments}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{-{}- a single line comment \newline % Row Count 1 (+ 1)
\{- a multiline comment \newline % Row Count 2 (+ 1)
   \{- can be nested -\} \newline % Row Count 3 (+ 1)
-\} \newline % Row Count 4 (+ 1)
-{}-tricks \newline % Row Count 5 (+ 1)
\{-{}-\}  \textless{}-{}- this can be removed /add \newline % Row Count 6 (+ 1)
add x y = x + y \newline % Row Count 7 (+ 1)
-{}-\}% Row Count 8 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Literal Operation}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{True \&\& not (True || False) \newline % Row Count 1 (+ 1)
(2 + 4) * (4\textasciicircum{}2 - 9) \newline % Row Count 2 (+ 1)
"abc" ++ "def"% Row Count 3 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{List}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{[}1..4{]} \newline % Row Count 1 (+ 1)
{[}1,2,3,4{]} \newline % Row Count 2 (+ 1)
1 :: {[}2,3,4{]} \newline % Row Count 3 (+ 1)
1 :: 2 :: 3 :: 4 :: {[}{]}% Row Count 4 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Conditionals}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{if powerLevel \textgreater{} 9000 then "OVER 9000!!!" else "meh" \newline  \newline -{}-Multi-way if-expressions \newline if | key == 40 -\textgreater{} n+1 \newline    | key == 38 -\textgreater{} n-1 \newline    | otherwise -\textgreater{} n \newline  \newline -{}-conditional behavior based on the structure of algebraic data types: \newline case maybe of \newline   Just xs -\textgreater{} xs \newline   Nothing -\textgreater{} {[}{]} \newline  \newline case xs of \newline   hd::tl -\textgreater{} Just (hd,tl) \newline   {[}{]}     -\textgreater{} Nothing \newline  \newline case n of \newline   0 -\textgreater{} 1 \newline   1 -\textgreater{} 1 \newline   \_ -\textgreater{} fib (n-1) + fib (n-2)} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}