website/content/blog/latexcode.md

title	date	draft	tags
Code in LaTex	2020-04-30T23:46:05-04:00	false

I am currently working on a paper in LaTex and wanted to include some source code in it. I didn't want to use the default verbatim environment since I wanted to include syntax highlighting as well. Luckily, the listings package is an easy and extensible way to include source code inside LaTex documents. To speak first of its extensibility, here is a subset of the arguments that it can possibly take:

Argument	Description
aboveskip	Amount of space to include above code.
backgroundcolor	Background color
basicstyle	Font-style of code (Color & Size)
belowskip	Amount of space to include below code.
breakatwhitespace	Only break at whitespace (boolean)
breaklines	Automatic Line Breaking (boolean)
commentstyle	Font-style of comments (Color & Size)
frame	Type of frame: l for left, r for right, t for top, b for bottom; can use combination of letters or single.
keywordstyle	Font-style of keywords (Color & Size)
language	Language of code (for highlighting purposes)
numbers	Where to put the numbers: none, left, or right.
numbersep	How far the line-numbers are from the code.
numberstyle	Font-style of numbers (Color & Size)
stringstyle	Font-style of strings in code (Color & Size)
tabsize	Default tab size in terms of spaces.
title	Show filename included in \lstinputlistings or caption.

Here is an example of code that I used in a paper

\usepackage{color}
\usepackage{listings}
\definecolor{keyblue}{rgb}{0.1, 0.1, 0.6}
\definecolor{dkgreen}{rgb}{0,0.6,0}
\definecolor{gray}{rgb}{0.5,0.5,0.5}
\definecolor{stringcol}{rgb}{0.58,0.4,0.1}

\lstset{frame=l,
  language=Python,
  aboveskip=3mm,
  belowskip=3mm,
  columns=flexible,
  basicstyle={\small\ttfamily},
  numbers=left,
  numberstyle=\tiny\color{gray},
  numbersep=2mm,
  keywordstyle=\color{keyblue},
  commentstyle=\color{dkgreen},
  stringstyle=\color{stringcol},
  breaklines=true,
  tabsize=4
}

\begin{lstlisting}
def greeting():
	return "Hello!"

# Printing the greeting to the screen
print(greeting())
\end{lstlisting}