\documentclass[10pt,a4paper]{article}

% Packages
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\usepackage{multicol}           % Allows multicols in tables
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\usepackage{hhline}             % Border under tables
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%\usepackage[utf8x]{inputenc}    % For unicode character support
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\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{hackingbeauty (hackingbeauty)}
\pdfinfo{
  /Title (react-reusability.pdf)
  /Creator (Cheatography)
  /Author (hackingbeauty (hackingbeauty))
  /Subject (React Reusability Cheat Sheet)
}

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% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
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\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{React Reusability Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{hackingbeauty (hackingbeauty)} via \textcolor{DarkBackground}{\uline{cheatography.com/37001/cs/11658/}}}
\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}hackingbeauty (hackingbeauty) \\
  \uline{cheatography.com/hackingbeauty} \\
        \uline{\seqsplit{hackingbeauty}.com}
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 7th May, 2017.\\
   Updated 7th May, 2017.\\
   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}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{\{\{fa-code\}\} Component Type \#1 - Class-based}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{class MyComponent extends Component \{ \newline  static propTypes ~	~= \{\} \newline  static defaultProps  = \{\} \newline  \newline   constructor(props) \{ \newline     super(props); \newline     this.state = \{ // state keys go here \} \newline   \} \newline  \newline   render() \{ \} \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Define a component this way when you need to maintain internal state.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{\{\{fa-code\}\} Component Type \#2 - Functional}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{function MyComponent(props) \{ \newline   return ( \textless{}div\textgreater{}\textless{}/div\textgreater{}); \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Define a component this way when you just need to render UI (no internal state required). \newline Synonymous with "Presentational Component".}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.68 cm} x{4.32 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{\{\{fa-circle-o-notch\}\} Lifecycle Hooks}}  \tn
% Row 0
\SetRowColor{LightBackground}
`constructor()` & Called before component is mounted \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
`render()` & Never call setState() here \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{`componentWillMount()`} & Before rendering (no DOM yet) \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
\seqsplit{`componentDidMount()`} & After rendering \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\seqsplit{`componentWillUpdate()`} & Can't use `setState()` here \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
\seqsplit{`componentDidUpdate()`} & Operate on the DOM here \tn 
% Row Count 12 (+ 2)
% Row 6
\SetRowColor{LightBackground}
\seqsplit{`componentWillReceiveProps()`} & Use `setState(`) here \tn 
% Row Count 14 (+ 2)
% Row 7
\SetRowColor{white}
\seqsplit{`shouldComponentUpdate()`} & Skips `render()` if returns false \tn 
% Row Count 16 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Available PropTypes}}  \tn
% Row 0
\SetRowColor{LightBackground}
`PropTypes.array` & Check if prop is an array \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
`PropTypes.string` & Check if prop is a string \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`PropTypes.bool` & Check if prop is a boolean (true/false) \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
`PropTypes.number` & Check if prop is a number \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`PropTypes.object` & Check if prop is an object \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
`PropTypes.node` & Check if prop is anything that can  \{\{nl\}\} be rendered in a React component \tn 
% Row Count 14 (+ 4)
% Row 6
\SetRowColor{LightBackground}
`PropTypes.func` & Check if prop is a function \tn 
% Row Count 16 (+ 2)
% Row 7
\SetRowColor{white}
`PropTypes.element` & Check if prop is a React element \tn 
% Row Count 18 (+ 2)
% Row 8
\SetRowColor{LightBackground}
`PropTypes.oneOf({[}'M', 'F''{]})` & Check if prop matches one of \{\{nl\}\} these values \tn 
% Row Count 21 (+ 3)
% Row 9
\SetRowColor{white}
`PropTypes.oneOfType({[}\{\{nl\}\}~~PropTypes.string, \{\{nl\}\}~~PropTypes.bool \{\{nl\}\}{]})` & Check if prop matches one of \{\{nl\}\} these types \tn 
% Row Count 26 (+ 5)
% Row 10
\SetRowColor{LightBackground}
\seqsplit{`PropTypes.instanceOf(Class)`} & Check if prop is an instance of a class \tn 
% Row Count 28 (+ 2)
% Row 11
\SetRowColor{white}
\seqsplit{`PropTypes.arrayOf(Array)`} & Check if prop is an array of \{\{nl\}\} some specific type \tn 
% Row Count 31 (+ 3)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Available PropTypes (cont)}}  \tn
% Row 12
\SetRowColor{LightBackground}
\seqsplit{`PropTypes.objectOf(PropTypes.number)`} & Check if prop is an object with \{\{nl\}\} property values of a specific type \tn 
% Row Count 4 (+ 4)
% Row 13
\SetRowColor{white}
`PropTypes.shape(\{ \{\{nl\}\}~~potato: PropTypes.object,\{\{nl\}\}~~turkey: PropTypes.string\{\{nl\}\} \})` & Check if prop object has a \{\{nl\}\} particular "shape" \tn 
% Row Count 10 (+ 6)
% Row 14
\SetRowColor{LightBackground}
`PropTypes.any` & Check if anything at all is passed \tn 
% Row Count 12 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{\{\{fa-check-square\}\} Reusability Checklist (ES6)}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Step \#1 -Define your component and import PropTypes \{\{nl\}\} from the 'prop-types' package} \tn 
\mymulticolumn{1}{x{8.4cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}` import React, \{ Component \} from 'react';\{\{nl\}\}   import PropTypes ~~~~~~~~~~~from 'prop-types';   \{\{nl\}\}\{\{nl\}\}   class MyComponent extends Component \{   \{\{nl\}\}   ~~static propTypes ~~~=  \{\}   \{\{nl\}\}   ~~static defaultProps = \{\}   \{\{nl\}\}   \{\{nl\}\}   ~~constructor(props) \{   \{\{nl\}\}   ~~~~super(props);   \{\{nl\}\}   ~~\}   \{\{nl\}\}   \{\{nl\}\}   ~~render() \{\}   \{\{nl\}\}   \}`} \tn 
% Row Count 13 (+ 13)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Step \#2 - Define the props \& what type they are} \tn 
\mymulticolumn{1}{x{8.4cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}`...\{\{nl\}\} static propTypes: \{ \{\{nl\}\} ~~className ~: PropTypes.string \{\{nl\}\} ~~isClosed ~~:  PropTypes.bool \{\{nl\}\} ~~email  ~~~~~: PropTypes.string \{\{nl\}\} \} \{\{nl\}\}...`} \tn 
% Row Count 20 (+ 7)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Step \#3 - Determine which props are required or optional} \tn 
\mymulticolumn{1}{x{8.4cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}`...\{\{nl\}\} static propTypes: \{ \{\{nl\}\} ~~className ~: PropTypes.string \{\{nl\}\} ~~isClosed ~~:  PropTypes.bool \{\{nl\}\} ~~email  ~~~~~: \seqsplit{PropTypes.string.isRequired} \{\{nl\}\} \} \{\{nl\}\}...`} \tn 
% Row Count 28 (+ 8)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Step \#4 - Define the defaults (if applicable)} \tn 
\mymulticolumn{1}{x{8.4cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}`...\{\{nl\}\}static defaultProps: \{ \{\{nl\}\} ~~ className~: "btn"\{\{nl\}\} ~~ isClosed~~: true \{\{nl\}\}\}\{\{nl\}\}...`} \tn 
% Row Count 32 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{\{\{fa-code\}\} You can custom validate a prop}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{... \newline static propTypes: \{ \newline   email: ((props, propName) =\textgreater{} \{ \newline     const regex = /\textasciicircum{}\textbackslash{}w+@{[}a-zA-Z\_{]}+?\textbackslash{}.{[}a-zA-Z{]}\{2,3\}\$/; \newline     if (!regex.test(props{[}propName{]})) \{ \newline       return new Error('Invalid email!'); \newline     \} \newline   \}) \newline \} \newline ...} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.52 cm} x{4.48 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Other APIs}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{`setState(updater}, {[}callback{]})` & Component will re-render \{\{nl\}\}with new state \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
`forceUpdate()` & Calls `render()`, \{\{nl\}\}skips \seqsplit{`shouldComponentUpdate()`} \tn 
% Row Count 6 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Next Steps}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Knowing how to create reusable components is step 1.} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Then you need to learn how to architect professional apps using React \& Redux.} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Learn how at \seqsplit{www.singlepageapplication.com}} \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}