\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{C4ll\_me\_Nomad}
\pdfinfo{
  /Title (ablaufsteuerung.pdf)
  /Creator (Cheatography)
  /Author (C4ll\_me\_Nomad)
  /Subject (Ablaufsteuerung Cheat Sheet)
}

% Lengths and widths
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\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
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\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
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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{Ablaufsteuerung Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{C4ll\_me\_Nomad} via \textcolor{DarkBackground}{\uline{cheatography.com/101228/cs/21161/}}}
\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}C4ll\_me\_Nomad \\
  \uline{cheatography.com/c4ll-me-nomad} \\
  \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 1st January, 2020.\\
   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}{Blockbildung}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{p{8.4cm}}{\vspace{1px}\centerline{\includegraphics[width=5.1cm]{/web/www.cheatography.com/public/uploads/c4ll-me-nomad_1573998197_Blockbildung.JPG}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{- Zeilen mit Ähnlicher Aufgabe nahe bei einander \newline - Zeilen, die die selben Variablen verwenden nahe beieinander \newline - Initialisierungen der Variablen kurz vor ihrer Verwendung}  \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}{Verwendung von if}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{- wahrscheinlichster Fall (Normalfall) immer in if – Bedingung \newline % Row Count 2 (+ 2)
- Sonderf{\"a}lle im else-Zweig \newline % Row Count 3 (+ 1)
- bei mehreren if: wahrscheinlichster Fall oben, unwahrscheinlichster Fall im letzten else-Zweig \newline % Row Count 5 (+ 2)
- komplexe Bedingungen explizit machen und in Teilausdrücke zerlegen \newline % Row Count 7 (+ 2)
{\bf{Gegenbeispiel:}} \newline % Row Count 8 (+ 1)
`if ( done ) ; // leeres if` \newline % Row Count 9 (+ 1)
`else \{// Hier hier sind die eigentlichen Anweisungen` \newline % Row Count 11 (+ 2)
`\}`% Row Count 12 (+ 1)
} \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}{Switch-Case}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{{\bf{Ordnen der case –F{\"a}lle}} \newline % Row Count 1 (+ 1)
- alphabetisch oder numerisch \newline % Row Count 2 (+ 1)
- Normalfall an der Spitze, dann abnehmende Wichtigkeit \newline % Row Count 4 (+ 2)
{\bf{case-F{\"a}lle m{\"o}glichst kurz}} \newline % Row Count 5 (+ 1)
Gesamte switch / case Anweisung sollte m{\"o}glichst auf eine Bildschirmseite passen \newline % Row Count 7 (+ 2)
{\bf{default}} \newline % Row Count 8 (+ 1)
- sinnvolle Standardwerte \newline % Row Count 9 (+ 1)
- zur Fehlerbehandlung  \newline % Row Count 10 (+ 1)
{\bf{Mehrere {\"a}hnliche switch-Bl{\"o}cke im Programm ggf. durch Polymorphie}} {\bf{ersetzen.}}% Row Count 12 (+ 2)
} \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}{Zwischenergebnisse explizit machen}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{- Vermeidung des Nachschlagens und der Notizzettel … \newline % Row Count 2 (+ 2)
- Problem: Lange Aufrufketten (= Aufruf von Methoden auf Rückgabewerten  \newline % Row Count 4 (+ 2)
  von Methoden *) \newline % Row Count 5 (+ 1)
`if \seqsplit{(smodule.getDependSubsystems().`}    \seqsplit{`contains(subSysMod.getSubSystem()))} \{` \newline % Row Count 7 (+ 2)
`   // Tuwas` \newline % Row Count 8 (+ 1)
`\}` \newline % Row Count 9 (+ 1)
- Besser: Teilausdrücke durch eigene Variable explizit benannt \newline % Row Count 11 (+ 2)
`List moduleDependees = \seqsplit{smodule.getDependSubsystems();`} \newline % Row Count 13 (+ 2)
`String ourSubSystem = \seqsplit{subSysMod.getSubSystem();`} \newline % Row Count 14 (+ 1)
`if \seqsplit{(moduleDependees.contains(ourSubSystem))} \{` \newline % Row Count 15 (+ 1)
`   // tuwas` \newline % Row Count 16 (+ 1)
`\}`% Row Count 17 (+ 1)
} \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}{Komplexe if-Ausdrücke zerlegen}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{{\bf{Beispiel für schwere Lesbarkeit durch komplexe Teilausdrücke}} \newline % Row Count 2 (+ 2)
`if (( elementIndex \textless{} 0 )||(MAX\_ELEMENTS \textless{} elementIndex) || `    `(elementIndex == lastElementIndex)) \{ // tuwas \}` \newline % Row Count 5 (+ 3)
{\bf{Teilausdrücke jeweils über Variablen benennen}} \newline % Row Count 7 (+ 2)
`boolean finished = ( elementIndex \textless{} 0) || ( MAX\_ELEMENTS \textless{} elementIndex);` \newline % Row Count 9 (+ 2)
`boolean repeatedEntry = (elementIndex == lastElementIndex);` \newline % Row Count 11 (+ 2)
`if (finished || repeatedEntry) \{ // tuwas \}`% Row Count 12 (+ 1)
} \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}{Vermeidung von if-Kaskaden}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{p{8.4cm}}{\vspace{1px}\centerline{\includegraphics[width=5.1cm]{/web/www.cheatography.com/public/uploads/c4ll-me-nomad_1577887905_Cheatsheet_ifKaskaden.PNG}}} \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}{Gute Methoden}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{- haben genau eine Aufgabe \newline % Row Count 1 (+ 1)
	(Warnsignale: boolean Flags zur Steuerung einer Operation) \newline % Row Count 3 (+ 2)
- Code auf derselben Abstraktionsebene haben (wenn nein -\textgreater{} Teile in eigene \seqsplit{Operationen/Routinen/Methoden} auslagern) \newline % Row Count 6 (+ 3)
{\bf{Übergebene Parameter am Anfang der \seqsplit{Methode/Operation/Routine} prüfen, bei Fehlern sofort zurückspringen }} \newline % Row Count 9 (+ 3)
{\bf{Eventuell: Vergleichslogik überarbeiten}} \newline % Row Count 10 (+ 1)
- Logische Bedingungen und if umdrehen (negieren) \newline % Row Count 11 (+ 1)
- Fallunterscheidungen anders schneiden \newline % Row Count 12 (+ 1)
- Bei gleichartigen F{\"a}llen: switch einführen \newline % Row Count 13 (+ 1)
- Methode sollte nicht mehr als 50 Zeilen lang sein% Row Count 15 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}