\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{liebus}
\pdfinfo{
  /Title (elixir.pdf)
  /Creator (Cheatography)
  /Author (liebus)
  /Subject (Elixir 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}{A020F0}
\definecolor{LightBackground}{HTML}{F9F1FE}
\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{Elixir Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{liebus} via \textcolor{DarkBackground}{\uline{cheatography.com/180711/cs/37582/}}}
\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}liebus \\
  \uline{cheatography.com/liebus} \\
  \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 9th March, 2023.\\
   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}{Hello world}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{\# hello.exs \newline defmodule Greeter do \newline   def greet(name) do \newline     message = "Hello, " \textless{}\textgreater{} name \textless{}\textgreater{} "!" \newline     IO.puts message \newline   end \newline end \newline  \newline Greeter.greet("world")} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{elixir hello.exs \newline \# Hello, world!}  \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}{Pattern matching}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{user = \%\{name: "Tom", age: 23\} \newline \%\{name: username\} = user} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{This sets username to "Tom".}  \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}{If}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{if false do \newline   "This will never be seen" \newline else \newline   "This will" \newline end} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.88666 cm} x{2.09034 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Types (Primitives)}}  \tn
% Row 0
\SetRowColor{LightBackground}
nil & Nil/null \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
true / false & Boolean \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
?a & Integer (ASCII) \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
23 & Integer \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
3.14 & Float \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
'hello' & Charlist \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\textless{}\textless{}2, 3\textgreater{}\textgreater{} & Binary \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
"hello" & Binary string \tn 
% Row Count 8 (+ 1)
% Row 8
\SetRowColor{LightBackground}
:hello & Atom \tn 
% Row Count 9 (+ 1)
% Row 9
\SetRowColor{white}
{[}a, b{]} & List \tn 
% Row Count 10 (+ 1)
% Row 10
\SetRowColor{LightBackground}
\{a, b\} & Tuple \tn 
% Row Count 11 (+ 1)
% Row 11
\SetRowColor{white}
\%\{a: "hello"\} & Map \tn 
% Row Count 12 (+ 1)
% Row 12
\SetRowColor{LightBackground}
\%MyStruct\{a: "hello"\} & Struct \tn 
% Row Count 13 (+ 1)
% Row 13
\SetRowColor{white}
fn -\textgreater{} ... end & Function \tn 
% Row Count 14 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Modules (Importing)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{require Redux   \# compiles a module \newline % Row Count 1 (+ 1)
import Redux    \# compiles, and you can use without the `Redux.` prefix \newline % Row Count 3 (+ 2)
use Redux       \# compiles, and runs Redux.\_\_using\_\_/1 \newline % Row Count 5 (+ 2)
use Redux, async: true \newline % Row Count 6 (+ 1)
import Redux, only: {[}duplicate: 2{]} \newline % Row Count 7 (+ 1)
import Redux, only: :functions \newline % Row Count 8 (+ 1)
import Redux, only: :macros \newline % Row Count 9 (+ 1)
import Foo.\{Bar, Baz\}% Row Count 10 (+ 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}{Maps}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{user = \%\{ \newline   name: "John", \newline   city: "Melbourne" \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{IO.puts "Hello, " \textless{}\textgreater{} user.name}  \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}{Variables}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{age = 23} \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}{Pattern matching in functions}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{ef greet(\%\{name: username\}) do \newline   IO.puts "Hello, " \textless{}\textgreater{} username \newline end \newline  \newline user = \%\{name: "Tom", age: 23\}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Pattern matching works in function parameters too.}  \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}{Case}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{case \{1, 2, 3\} do \newline   \{4, 5, 6\} -\textgreater{} \newline     "This clause won't match" \newline   \{1, x, 3\} -\textgreater{} \newline     "This will match and bind x to 2" \newline   \_ -\textgreater{} \newline    "This will match any value" \newline end} \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}{With}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{case \seqsplit{Users.create\_user(attrs)} do \newline   \{:ok, user\} -\textgreater{} ... \newline   \{:error, changeset\} -\textgreater{} ... \newline end \newline  \newline with \{:ok, user\} \textless{}- \seqsplit{Users.create\_user(attrs)} do \newline   ... \newline else \newline   \{:error, changeset\} -\textgreater{} ... \newline end} \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}{Lists}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{users = {[} "Tom", "Dick", "Harry" {]} \newline   \newline Enum.map(users, fn user -\textgreater{} \newline   IO.puts "Hello " \textless{}\textgreater{} user \newline end)} \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}{Piping}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{source \newline |\textgreater{} transform(:hello) \newline |\textgreater{} print() \newline   \newline \# Same as: \newline print(transform(source, :hello))} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{These two are equivalent.}  \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}{Cond}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{cond do \newline   1 + 1 == 3 -\textgreater{} \newline     "I will never be seen" \newline   2 * 5 == 12 -\textgreater{} \newline     "Me neither" \newline   true -\textgreater{} \newline     "But I will (this is essentially an else)" \newline end} \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}{Errors}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{try do \newline   throw(:hello) \newline catch \newline   message -\textgreater{} "Got \#\{message\}." \newline after \newline   IO.puts("I'm the after clause.") \newline end} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.64772 cm} x{1.28156 cm} x{1.64772 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Type checks}}  \tn
% Row 0
\SetRowColor{LightBackground}
is\_atom/1 & \seqsplit{is\_binary/1} & is\_nil/1 \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\seqsplit{is\_bitstring/1} & is\_list/1 & is\_number/1 \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
is\_boolean/1 & is\_map/1 & is\_pid/1 \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
is\_function/1 & is\_tuple/1 & is\_port/1 \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
is\_function/2 &  & \seqsplit{is\_reference/1} \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
\mymulticolumn{3}{x{5.377cm}}{is\_integer/1} \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{3}{x{5.377cm}}{is\_float/1} \tn 
% Row Count 7 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Operators}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{left != right   \# equal \newline % Row Count 1 (+ 1)
left !== right  \# match \newline % Row Count 2 (+ 1)
left ++ right   \# concat lists \newline % Row Count 3 (+ 1)
left \textless{}\textgreater{} right   \# concat string/binary \newline % Row Count 4 (+ 1)
left =\textasciitilde{} right   \# regexp% Row Count 5 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}