\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{msalmanh}
\pdfinfo{
  /Title (hooks-16-8.pdf)
  /Creator (Cheatography)
  /Author (msalmanh)
  /Subject (Hooks@16.8 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}{61DAFB}
\definecolor{LightBackground}{HTML}{EBFAFE}
\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{Hooks@16.8 Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{msalmanh} via \textcolor{DarkBackground}{\uline{cheatography.com/177852/cs/37119/}}}
\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}msalmanh \\
  \uline{cheatography.com/msalmanh} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 15th February, 2023.\\
   Updated 15th February, 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}{useState}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{State as Object:}} \newline % Row Count 1 (+ 1)
The state is an object that holds information about a certain component.  \newline % Row Count 3 (+ 2)
{\bf{Two Factor:}} \newline % Row Count 4 (+ 1)
State change is one of the two things that make a React component re-render(the other is a change in props) \newline % Row Count 7 (+ 3)
{\bf{Behavior}} \newline % Row Count 8 (+ 1)
The state stores information about the component and controls its behavior. \newline % Row Count 10 (+ 2)
{\bf{Updater Function}} \newline % Row Count 11 (+ 1)
The setState() function is asynchronous . \newline % Row Count 12 (+ 1)
{\bf{Time Taken by Re-render}} \newline % Row Count 13 (+ 1)
The time it takes for a component to render after a call to setState() depends upon the various factors, including the size and complexity of the component, the speed of the Computer or device and the amount of data being processed . \newline % Row Count 18 (+ 5)
{\bf{Optimization}} \newline % Row Count 19 (+ 1)
It reduces unnecessary re-renders and updates only the components that have changed.% Row Count 21 (+ 2)
} \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}{useEffect}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{Side Effects}} \newline % Row Count 1 (+ 1)
Actions which are Unpredictable because they are performed with the outside world. \newline % Row Count 3 (+ 2)
{\bf{Meaning}} \newline % Row Count 4 (+ 1)
Side Effects basically means something that happens after Some other specific thing happens.  \newline % Row Count 6 (+ 2)
{\bf{Common Side Effects}} \newline % Row Count 7 (+ 1)
1. Making a request to an API for data on back end server. \newline % Row Count 9 (+ 2)
2.Interact with browser API e.g. use document or windows directly. \newline % Row Count 11 (+ 2)
3.Using unpredictable timing functions like setTimeOut() or setInterval(). \newline % Row Count 13 (+ 2)
{\bf{How}} \newline % Row Count 14 (+ 1)
If we need to perform side effects it should be after the component renders. \newline % Row Count 16 (+ 2)
{\bf{useEffect}} \newline % Row Count 17 (+ 1)
useEffect has one function(callback) and an array(dependency array) \newline % Row Count 19 (+ 2)
{\bf{Callback}} \newline % Row Count 20 (+ 1)
Call back function will be called after the component renders. And this is the function which is used to perform our side effects . \newline % Row Count 23 (+ 3)
{\bf{Dependency Array}} \newline % Row Count 24 (+ 1)
The dependencies array should include all of the values that our side Effect relies upon. \newline % Row Count 26 (+ 2)
1. The array will cause the useState() to execute again if one of its variables changes \newline % Row Count 28 (+ 2)
2.If provided incorrectly the array with the local state. this may cause an infinite loop.  \newline % Row Count 30 (+ 2)
} \tn 
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{useEffect (cont)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{CleanUp Function}} \newline % Row Count 1 (+ 1)
When component unmounts this functions cleans up any changes made by effect.% Row Count 3 (+ 2)
} \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}{useEffect and useState}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{import React, \{ useState, useEffect \} from 'react'; \newline  \newline function Example() \{ \newline   const {[}data, setData{]} = useState({[}{]}); \newline  \newline   useEffect(() =\textgreater{} \{ \newline     \seqsplit{fetch('https://jsonplaceholder}.typicode.com/posts') \newline       .then(response =\textgreater{} response.json()) \newline       .then(json =\textgreater{} setData(json)) \newline       .catch(error =\textgreater{} console.error(error)); \newline   \}, {[}{]}); \newline  \newline   return ( \newline     \textless{}div\textgreater{} \newline       \{data.map(post =\textgreater{} ( \newline         \textless{}div key=\{post.id\}\textgreater{} \newline           \textless{}h2\textgreater{}\{post.title\}\textless{}/h2\textgreater{} \newline           \textless{}p\textgreater{}\{post.body\}\textless{}/p\textgreater{} \newline         \textless{}/div\textgreater{} \newline       ))\} \newline     \textless{}/div\textgreater{} \newline   ); \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}