\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{nbmx99}
\pdfinfo{
  /Title (dart.pdf)
  /Creator (Cheatography)
  /Author (nbmx99)
  /Subject (Dart Cheat Sheet)
}

% Lengths and widths
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% 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
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% Font and Colours
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\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{Dart Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{nbmx99} via \textcolor{DarkBackground}{\uline{cheatography.com/208740/cs/44863/}}}
\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}nbmx99 \\
  \uline{cheatography.com/nbmx99} \\
  \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 21st February, 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*}{4}

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% Row 0
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`{\bf{abstract}}` & `{\bf{as}}` & `{\bf{assert}}` & `{\bf{async}}` \tn 
% Row Count 2 (+ 2)
% Row 1
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`{\bf{await}}` & `{\bf{base}}` & `{\bf{break}}` & `{\bf{case}}` \tn 
% Row Count 4 (+ 2)
% Row 2
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`{\bf{catch}}` & `{\bf{class}}` & `{\bf{const}}` & `{\bf{continue}}` \tn 
% Row Count 6 (+ 2)
% Row 3
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`{\bf{covariant}}` & `{\bf{default}}` & `{\bf{deferred}}` & `{\bf{do}}` \tn 
% Row Count 8 (+ 2)
% Row 4
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`{\bf{dynamic}}` & `{\bf{else}}` & `{\bf{enum}}` & `{\bf{export}}` \tn 
% Row Count 10 (+ 2)
% Row 5
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`{\bf{extends}}` & `{\bf{extension}}` & `{\bf{external}}` & `{\bf{factory}}` \tn 
% Row Count 12 (+ 2)
% Row 6
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`{\bf{false}}` & `{\bf{final}}` & `{\bf{get}}` & `{\bf{finally}}` \tn 
% Row Count 14 (+ 2)
% Row 7
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`{\bf{for}}` & `{\bf{Function}}` & `{\bf{import}}` & `{\bf{hide}}` \tn 
% Row Count 16 (+ 2)
% Row 8
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`{\bf{if}}` & `{\bf{implements}}` & `{\bf{late}}` & `{\bf{in}}` \tn 
% Row Count 18 (+ 2)
% Row 9
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`{\bf{interface}}` & `{\bf{is}}` & `{\bf{null}}` & `{\bf{library}}` \tn 
% Row Count 20 (+ 2)
% Row 10
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`{\bf{mixin}}` & `{\bf{new}}` & `{\bf{part}}` & `{\bf{of}}` \tn 
% Row Count 22 (+ 2)
% Row 11
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`{\bf{on}}` & `{\bf{operator}}` & `{\bf{sealed}}` & `{\bf{required}}` \tn 
% Row Count 24 (+ 2)
% Row 12
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`{\bf{rethrow}}` & `{\bf{return}}` & `{\bf{super}}` & `{\bf{set}}` \tn 
% Row Count 26 (+ 2)
% Row 13
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`{\bf{show}}` & `{\bf{static}}` & `{\bf{throw}}` & `{\bf{switch}}` \tn 
% Row Count 28 (+ 2)
% Row 14
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`{\bf{sync}}` & `{\bf{this}}` & `{\bf{typedef}}` & `{\bf{true}}` \tn 
% Row Count 30 (+ 2)
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\par\addvspace{1.3em}

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\mymulticolumn{4}{x{3.833cm}}{\bf\textcolor{white}{Keywords (cont)}}  \tn
% Row 15
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`{\bf{try}}` & `{\bf{type}}` & `{\bf{with}}` & `{\bf{var}}` \tn 
% Row Count 2 (+ 2)
% Row 16
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`{\bf{void}}` & `{\bf{when}}` &  & `{\bf{while}}` \tn 
% Row Count 4 (+ 2)
% Row 17
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\mymulticolumn{4}{x{3.833cm}}{`{\bf{yield}}`} \tn 
% Row Count 5 (+ 1)
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\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{x{1.33452 cm} x{1.00089 cm} p{0.69759 cm} }
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\mymulticolumn{3}{x{3.833cm}}{\bf\textcolor{white}{Naming Conventions}}  \tn
% Row 0
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Classes & {\bf{UpperCamelCase}} & MyClass \tn 
% Row Count 2 (+ 2)
% Row 1
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Enums & {\bf{UpperCamelCase}} & MyEnum \tn 
% Row Count 4 (+ 2)
% Row 2
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Extensions & {\bf{UpperCamelCase}} & \seqsplit{MyExtension} \tn 
% Row Count 6 (+ 2)
% Row 3
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Typedefs & {\bf{UpperCamelCase}} & \seqsplit{MyTypeDef} \tn 
% Row Count 8 (+ 2)
% Row 4
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Fields & {\bf{lowerCamelCase}} & myField \tn 
% Row Count 10 (+ 2)
% Row 5
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Private fields & {\bf{\_lowerCamelCase}} & \_myField \tn 
% Row Count 12 (+ 2)
% Row 6
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Functions & {\bf{lowerCamelCase}} & \seqsplit{myFunction} \tn 
% Row Count 14 (+ 2)
% Row 7
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Parameters & {\bf{lowerCamelCase}} & \seqsplit{myParameter} \tn 
% Row Count 16 (+ 2)
% Row 8
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Variables & {\bf{lowerCamelCase}} & \seqsplit{myVariable} \tn 
% Row Count 18 (+ 2)
% Row 9
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Constants & {\bf{lowerCamelCase}} & \seqsplit{myConstant} \tn 
% Row Count 20 (+ 2)
% Row 10
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Directories, Source files, Packages \& Imports & {\bf{lowercase\_with\_underscores}} & \seqsplit{my\_package}, \seqsplit{main.dart} \tn 
% Row Count 23 (+ 3)
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% Row Count 2 (+ 2)
% Row 1
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Assignment operators & `=`, `+=`, `-=`, `*=`, `/=`, `\textasciitilde{}/=`, `\%=`, `\&=`, `|=`, `\textasciicircum{}=`, `\textless{}\textless{}=`, `\textgreater{}\textgreater{}=`, `\textgreater{}\textgreater{}\textgreater{}=` \tn 
% Row Count 6 (+ 4)
% Row 2
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Bitwise operators & `\&`, `|`, `\textasciicircum{}`, `\textasciitilde{}`, `\textless{}\textless{}`, `\textgreater{}\textgreater{}`, `\textgreater{}\textgreater{}\textgreater{}` \tn 
% Row Count 8 (+ 2)
% Row 3
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Comparison operators & `==`, `!=`, `\textless{}`, `\textgreater{}`, `\textless{}=`, `\textgreater{}=` \tn 
% Row Count 10 (+ 2)
% Row 4
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Conditional operator & `? :` \tn 
% Row Count 12 (+ 2)
% Row 5
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Logical operators & `!`, `\&\&`, `||` \tn 
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% Row 6
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Function application & `()` \tn 
% Row Count 16 (+ 2)
% Row 7
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Subscript access & `{[}{]}` \tn 
% Row Count 17 (+ 1)
% Row 8
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Conditional subscript access & `?{[}{]}` \tn 
% Row Count 19 (+ 2)
% Row 9
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Member access & `.` \tn 
% Row Count 20 (+ 1)
% Row 10
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Conditional member access & `?.` \tn 
% Row Count 22 (+ 2)
% Row 11
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Non-null assertion operator & `!` \tn 
% Row Count 24 (+ 2)
% Row 12
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Unary operators & `++`, `-{}-` \tn 
% Row Count 25 (+ 1)
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\par\addvspace{1.3em}

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% Row 1
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% Row 2
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\par\addvspace{1.3em}

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\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\begin{tabularx}{3.833cm}{X}
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\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{`{\bf{int}} age = 21;` \newline `{\bf{double}} height = 1.75;` \newline `{\bf{var}}`` date``Of``Birth`` = 2003;` \newline `{\bf{String}} name = ``"``Jack``";` \newline `{\bf{bool}} isHuman = {\bf{true}};`}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

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\SetRowColor{LightBackground}
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\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{X}
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% Row Count 3 (+ 3)
% Row 1
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\mymulticolumn{1}{x{3.833cm}}{`{\bf{switch}} ({\emph{value}}) \{\{\{nl\}\}{\bf{case}} {\emph{value1}}: `...`\{\{nl\}\}{\bf{break}};\{\{nl\}\}{\bf{case}} {\emph{value2}}: `...`\{\{nl\}\}{\bf{break}};\{\{nl\}\}`...`\{\{nl\}\}{\bf{default}}: `...`\{\{nl\}\}{\bf{break}};\{\{nl\}\}\}`} \tn 
% Row Count 7 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{X}
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% Row 0
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% Row Count 2 (+ 2)
% Row 1
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% Row Count 3 (+ 1)
% Row 2
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% Row Count 5 (+ 2)
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\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{X}
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% Row 0
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% Row Count 2 (+ 2)
% Row 1
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\mymulticolumn{1}{x{3.833cm}}{`{\bf{static}} T `functionName`(`{\emph{parameter(s)}}`) \{`\{\{nl\}\}`   `...\{\{nl\}\}`\}`} \tn 
% Row Count 4 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}