\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{nixik09}
\pdfinfo{
  /Title (swift.pdf)
  /Creator (Cheatography)
  /Author (nixik09)
  /Subject (Swift Cheat Sheet)
}

% Lengths and widths
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\addtolength{\voffset}{-2cm}
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\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}{DBCCD5}
\definecolor{LightBackground}{HTML}{F6F2F4}
\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{Swift Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{nixik09} via \textcolor{DarkBackground}{\uline{cheatography.com/212204/cs/47199/}}}
\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}nixik09 \\
  \uline{cheatography.com/nixik09} \\
  \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 November, 2025.\\
   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*}{2}

\begin{tabularx}{8.4cm}{x{4.4 cm} x{3.6 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Simple Values}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{`let` for constants; `var` for variables} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{Constants: value doesn't need to be known at compile time, but must assign it a value exactly once} \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{Rule for types: constant or variable must have the same type as the value you want to assign it.} \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{Inferring Types: Type can be inferred if value provided when creating constant/var.} \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
Specifying types: Write after the variable, separated by colon & `let explicitDouble: Double = 70` \tn 
% Row Count 10 (+ 3)
% Row 5
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{Values are never implicitly converted to another type. If conversion required, must be done explicitly} \tn 
% Row Count 13 (+ 3)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{`let lottoString = "Today's winning lotto number is " \{\{nl\}\} let lottoNumber = 94\{\{nl\}\} let lottoSentence =  lottoString + String(lottoNumber)`} \tn 
% Row Count 16 (+ 3)
% Row 7
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{Backslash string interpolation} \tn 
% Row Count 17 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{`let friendCount = 2\{\{nl\}\}let friendCountString = "I have \textbackslash{}(friendCount) number of \{\{nl\}\} friends."`} \tn 
% Row Count 19 (+ 2)
% Row 9
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{Use three double quotation marks for strings that take up multiple lines.} \tn 
% Row Count 21 (+ 2)
% Row 10
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{Create arrays and dictionaries using brackets, and access their elements by writing the index or key in brackets.} \tn 
% Row Count 24 (+ 3)
% Row 11
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{`var toys = {[}"labubu", "simski", "furby"{]}\{\{nl\}\} toys{[}1{]} = "fuggler" \{\{nl\}\} toys.append("jellycat") \{\{nl\}\} var bestItemOfThing = {[} "summer fruit" : "mango",{]} \{\{nl\}\} bestItemOfThing{[}"summer fruit"{]} = "peach"`} \tn 
% Row Count 29 (+ 5)
% Row 12
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{Arrays grow automatically.} \tn 
% Row Count 30 (+ 1)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{8.4cm}{x{4.4 cm} x{3.6 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Simple Values (cont)}}  \tn
% Row 13
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{For empty array, write `excellentFruits = {[}{]}`. For an empty dictionary, write `mediocreFruits = {[}:{]}`.} \tn 
% Row Count 3 (+ 3)
% Row 14
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{If assigning empty array or dict to new var, you need to specify type.} \tn 
% Row Count 5 (+ 2)
% Row 15
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{`let arrayOfGoodCoffeeCafes: {[}String{]} = {[}{]} \{\{nl\}\} let \seqsplit{dictCafesWithMatchaAndRatings:} {[}String: Float{]} = {[}:{]}`} \tn 
% Row Count 8 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{p{0.8 cm} p{0.8 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Control Flow}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{{\bf{Conditionals}}: `if`, `switch`} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{{\bf{Loops}}: `for-in`, `while`, `repeat - while `} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{Parentheses around condition/loop variable are optional, braces are required} \tn 
% Row Count 4 (+ 2)
% Row 3
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{`let croissantScores = {[}1.2, 2.3, 2.2, 4{]}\{\{nl\}\} for score in croissantScores \{ \{\{nl\}\} ~ ~ if score \textgreater{} 2.5 \{ \{\{nl\}\} ~ ~ ~ print("Great croissant!!") \{\{nl\}\} ~ ~ \} \{\{nl\}\} \}`} \tn 
% Row Count 9 (+ 5)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{In `if` statement, conditional must be a boolean expression. `if score \{ ... \}` is an error, not implicit comparison to zero.} \tn 
% Row Count 12 (+ 3)
% Row 5
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{You can assign if conditions to an assignment} \tn 
% Row Count 13 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{` let scoreDecoration = if teamScore \textgreater{} 10 \{ \{\{nl\}\} ~ "🎂" \{\{nl\}\} \} else \{ \{\{nl\}\} ~ "" \{\{nl\}\} \} \{\{nl\}\} print("Score:", teamScore, scoreDecoration)`} \tn 
% Row Count 17 (+ 4)
% Row 7
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{{\bf{Optionals}}: either contains a value or contains `nil` to indicate a value is missing. A question mark after type of value marks it as optional.} \tn 
% Row Count 20 (+ 3)
% Row 8
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{`var optionalString: String? = "Hello" \{\{nl\}\} print(optionalString == nil) \{\{nl\}\} // prints "false"`} \tn 
% Row Count 22 (+ 2)
% Row 9
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{Use `if` and `let` to work with missing values. If optional value is `nil`, conditional is false and code in braces is skipped. Otherwise, optional value is unwrapped and assigned to constant after `let`, which makes the unwrapped value available inside block of code.} \tn 
% Row Count 28 (+ 6)
% Row 10
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{`var optionalName: String? = "Big Dog" \{\{nl\}\} var greeting = "Hello!" \{\{nl\}\} if let name = optionalName \{ \{\{nl\}\} ~ greeting = "Hello, \textbackslash{}(name)" \{\{nl\}\} \} else \{ \{\{nl\}\} ~    greeting = "Wow!" \{\{nl\}\} \} `} \tn 
% Row Count 33 (+ 5)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{8.4cm}{p{0.8 cm} p{0.8 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Control Flow (cont)}}  \tn
% Row 11
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{`??` operator: If optional value missing, default value used instead} \tn 
% Row Count 2 (+ 2)
% Row 12
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{`let holidayInNov: String? = nil \{\{nl\}\} let holidayInDec: String = "Bali" \{\{nl\}\} let welcomeMsg = "Enjoy \textbackslash{}(holidayInNov ?? holidayInDec)" `} \tn 
% Row Count 5 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}