\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{kennybatista} \pdfinfo{ /Title (swift-programming-language-cheat-sheet.pdf) /Creator (Cheatography) /Author (kennybatista) /Subject ( Swift Programming Language  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}{FF870F} \definecolor{LightBackground}{HTML}{FFF7F0} \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 Programming Language  Cheat Sheet}}}} \\ \normalsize{by \textcolor{DarkBackground}{kennybatista} via \textcolor{DarkBackground}{\uline{cheatography.com/20913/cs/3873/}}} \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}kennybatista \\ \uline{cheatography.com/kennybatista} \\ \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 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*}{4} \begin{tabularx}{3.833cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{Arithmetic Operators}} \tn \SetRowColor{white} \mymulticolumn{1}{x{3.833cm}}{Operator Purpose \newline % Row Count 1 (+ 1) + Addition \newline % Row Count 2 (+ 1) - Subtraction \newline % Row Count 3 (+ 1) * Multiplication \newline % Row Count 4 (+ 1) / Division \newline % Row Count 5 (+ 1) \% Remainder% Row Count 6 (+ 1) } \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{3.833cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{OPERATORS}} \tn \SetRowColor{white} \mymulticolumn{1}{x{3.833cm}}{Arithmetic Operators \newline % Row Count 1 (+ 1) + Addition \newline % Row Count 2 (+ 1) - Subtraction \newline % Row Count 3 (+ 1) * Multiplication \newline % Row Count 4 (+ 1) / Division \newline % Row Count 5 (+ 1) \% Remainder \newline % Row Count 6 (+ 1) Note: Unlike the remainder operator in C and Objective-C, Swift's remainder operator can also operate on floating-point numbers (e.g. 8 \% 2.5 // equals 0.5) \newline % Row Count 10 (+ 4) Comparative Operators \newline % Row Count 11 (+ 1) == Equal to \newline % Row Count 12 (+ 1) === Identical to \newline % Row Count 13 (+ 1) != Not equal to \newline % Row Count 14 (+ 1) !== Not identical to \newline % Row Count 15 (+ 1) \textasciitilde{}= Pattern match \newline % Row Count 16 (+ 1) \textgreater{} Greater than \newline % Row Count 17 (+ 1) \textless{} Less than \newline % Row Count 18 (+ 1) \textgreater{}= Greater than or equal to \newline % Row Count 19 (+ 1) \textless{}= Less than or equal to \newline % Row Count 20 (+ 1) Assignment Operators \newline % Row Count 21 (+ 1) = Assign \newline % Row Count 22 (+ 1) += Addition \newline % Row Count 23 (+ 1) -= Subtraction \newline % Row Count 24 (+ 1) *= Multiplication \newline % Row Count 25 (+ 1) /= Division \newline % Row Count 26 (+ 1) \%= Remainder \newline % Row Count 27 (+ 1) \&= Bitwise AND \newline % Row Count 28 (+ 1) |= Bitwise Inclusive OR \newline % Row Count 29 (+ 1) \textasciicircum{}= Exclusive OR \newline % Row Count 30 (+ 1) } \tn \end{tabularx} \par\addvspace{1.3em} \vfill \columnbreak \begin{tabularx}{3.833cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{OPERATORS (cont)}} \tn \SetRowColor{white} \mymulticolumn{1}{x{3.833cm}}{\textless{}\textless{}= Shift Left \newline % Row Count 1 (+ 1) \textgreater{}\textgreater{}= Shift Right \newline % Row Count 2 (+ 1) \&\&= Logical AND \newline % Row Count 3 (+ 1) ||= Logical OR \newline % Row Count 4 (+ 1) Increment and Decrement Operators \newline % Row Count 5 (+ 1) ++ Addition \newline % Row Count 6 (+ 1) -{}- Subtraction \newline % Row Count 7 (+ 1) If the operator is written before the variable, it increments the variable before returning its value. \newline % Row Count 10 (+ 3) If the operator is written after the variable, it increments the variable after returning its value. \newline % Row Count 13 (+ 3) Logical Operators \newline % Row Count 14 (+ 1) ! NOT \newline % Row Count 15 (+ 1) \&\& Logical AND \newline % Row Count 16 (+ 1) || Logical OR \newline % Row Count 17 (+ 1) Range Operators \newline % Row Count 18 (+ 1) ..\textless{} Half-open range \newline % Row Count 19 (+ 1) ... Closed range \newline % Row Count 20 (+ 1) Bitwise Operators \newline % Row Count 21 (+ 1) \& Bitwise AND \newline % Row Count 22 (+ 1) | Bitwise Inclusive OR \newline % Row Count 23 (+ 1) \textasciicircum{} Exclusive OR \newline % Row Count 24 (+ 1) \textasciitilde{} Unary complement (bit inversion) \newline % Row Count 25 (+ 1) \textless{}\textless{} Shift Left \newline % Row Count 26 (+ 1) \textgreater{}\textgreater{} Shift Right \newline % Row Count 27 (+ 1) Overflow and Underflow Operators \newline % Row Count 28 (+ 1) Typically, assigning or incrementing an integer, float, or double past it's range would result in a runtime error. However, if you'd instead prefer to safely truncate the number of available bits, you can opt-in to have the variable overflow or underflow using the following operators: \newline % Row Count 34 (+ 6) } \tn \end{tabularx} \par\addvspace{1.3em} \vfill \columnbreak \begin{tabularx}{3.833cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{OPERATORS (cont)}} \tn \SetRowColor{white} \mymulticolumn{1}{x{3.833cm}}{Operator Purpose \newline % Row Count 1 (+ 1) \&+ Addition \newline % Row Count 2 (+ 1) \&- Subtraction \newline % Row Count 3 (+ 1) \&* Multiplication \newline % Row Count 4 (+ 1) \&/ Division \newline % Row Count 5 (+ 1) \&\% Remainder \newline % Row Count 6 (+ 1) Example for unsigned integers (works similarly for signed): \newline % Row Count 8 (+ 2) var willOverflow = UInt8.max \newline % Row Count 9 (+ 1) // willOverflow equals 255, which is the largest value a UInt8 can hold \newline % Row Count 11 (+ 2) willOverflow = willOverflow \&+ 1 \newline % Row Count 12 (+ 1) // willOverflow is now equal to 0 \newline % Row Count 13 (+ 1) var willUnderflow = UInt8.min \newline % Row Count 14 (+ 1) // willUnderflow equals 0, which is the smallest value a UInt8 can hold \newline % Row Count 16 (+ 2) willUnderflow = willUnderflow \&- 1 \newline % Row Count 17 (+ 1) // willUnderflow is now equal to 255 \newline % Row Count 18 (+ 1) Another example to show how you can prevent dividing by zero from resulting in infinity: \newline % Row Count 20 (+ 2) let x = 1 \newline % Row Count 21 (+ 1) let y = x \&/ 0 \newline % Row Count 22 (+ 1) // y is equal to 0 \newline % Row Count 23 (+ 1) Other Operators \newline % Row Count 24 (+ 1) ?? Nil coalescing \newline % Row Count 25 (+ 1) ?: Ternary conditional \newline % Row Count 26 (+ 1) ! Force unwrap object value \newline % Row Count 27 (+ 1) ? Safely unwrap object value% Row Count 28 (+ 1) } \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{3.833cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{Comperative Operators}} \tn \SetRowColor{white} \mymulticolumn{1}{x{3.833cm}}{Operator Purpose \newline % Row Count 1 (+ 1) == Equal to \newline % Row Count 2 (+ 1) === Identical to \newline % Row Count 3 (+ 1) != Not equal to \newline % Row Count 4 (+ 1) !== Not identical to \newline % Row Count 5 (+ 1) \textasciitilde{}= Pattern match \newline % Row Count 6 (+ 1) \textgreater{} Greater than \newline % Row Count 7 (+ 1) \textless{} Less than \newline % Row Count 8 (+ 1) \textgreater{}= Greater than or equal to \newline % Row Count 9 (+ 1) \textless{}= Less than or equal to% Row Count 10 (+ 1) } \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{3.833cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{Assignment Operators}} \tn \SetRowColor{white} \mymulticolumn{1}{x{3.833cm}}{Operator Purpose \newline % Row Count 1 (+ 1) = Assign \newline % Row Count 2 (+ 1) += Addition \newline % Row Count 3 (+ 1) -= Subtraction \newline % Row Count 4 (+ 1) *= Multiplication \newline % Row Count 5 (+ 1) /= Division \newline % Row Count 6 (+ 1) \%= Remainder \newline % Row Count 7 (+ 1) \&= Bitwise AND \newline % Row Count 8 (+ 1) |= Bitwise Inclusive OR \newline % Row Count 9 (+ 1) \textasciicircum{}= Exclusive OR \newline % Row Count 10 (+ 1) \textless{}\textless{}= Shift Left \newline % Row Count 11 (+ 1) \textgreater{}\textgreater{}= Shift Right \newline % Row Count 12 (+ 1) \&\&= Logical AND \newline % Row Count 13 (+ 1) ||= Logical OR% Row Count 14 (+ 1) } \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{3.833cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{Bitwise Operators}} \tn \SetRowColor{white} \mymulticolumn{1}{x{3.833cm}}{Operator Purpose \newline % Row Count 1 (+ 1) \& Bitwise AND \newline % Row Count 2 (+ 1) | Bitwise Inclusive OR \newline % Row Count 3 (+ 1) \textasciicircum{} Exclusive OR \newline % Row Count 4 (+ 1) \textasciitilde{} Unary complement (bit inversion) \newline % Row Count 5 (+ 1) \textless{}\textless{} Shift Left \newline % Row Count 6 (+ 1) \textgreater{}\textgreater{} Shift Right% Row Count 7 (+ 1) } \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{3.833cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{Increment and Decrement Operators}} \tn \SetRowColor{white} \mymulticolumn{1}{x{3.833cm}}{Operator Purpose \newline % Row Count 1 (+ 1) ++ Addition \newline % Row Count 2 (+ 1) -{}- Subtraction% Row Count 3 (+ 1) } \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{3.833cm}}{-If the operator is written before the variable, it increments the variable before returning its value. \newline \newline -If the operator is written after the variable, it increments the variable after returning its value.} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{3.833cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{Logical Operators}} \tn \SetRowColor{white} \mymulticolumn{1}{x{3.833cm}}{Operator Purpose \newline % Row Count 1 (+ 1) ! NOT \newline % Row Count 2 (+ 1) \&\& Logical AND \newline % Row Count 3 (+ 1) || Logical OR% Row Count 4 (+ 1) } \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{3.833cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{Range Operators}} \tn \SetRowColor{white} \mymulticolumn{1}{x{3.833cm}}{Operator Purpose \newline % Row Count 1 (+ 1) ..\textless{} Half-open range \newline % Row Count 2 (+ 1) ... Closed range% Row Count 3 (+ 1) } \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} % That's all folks \end{multicols*} \end{document}