1\documentclass[12pt]{article}
2\usepackage{listings}
3\usepackage{xcolor}
4\usepackage{courier}
5
6\lstset{
7  basicstyle=\ttfamily\small,
8  keywordstyle=\color{blue}\bfseries,
9  stringstyle=\color{red!70!black},
10  commentstyle=\color{green!50!black}\itshape,
11  numbers=left,
12  numberstyle=\tiny\color{gray},
13  numbersep=8pt,
14  frame=single,
15  breaklines=true,
16  tabsize=2,
17  showstringspaces=false,
18}
19
20\title{Code Listings in LaTeX}
21\author{sublimated}
22\date{}
23
24\begin{document}
25\maketitle
26
27\section{Inline Code}
28
29Use \lstinline|fn main()| for inline code. Variables like \lstinline|x| and
30functions like \lstinline|calculate()| appear in monospace.
31
32\section{Rust}
33
34\begin{lstlisting}[language=Rust, caption={BLAKE3 hashing}]
35use blake3;
36
37fn hash_content(data: &[u8]) -> String {
38    let hash = blake3::hash(data);
39    format!("blake3-{}", hash.to_hex())
40}
41
42fn main() {
43    let content = b"hello world";
44    let cid = hash_content(content);
45    println!("CID: {}", cid);
46}
47\end{lstlisting}
48
49\section{Python}
50
51\begin{lstlisting}[language=Python, caption={LaTeX log parser}]
52import re
53
54def parse_latex_log(log_text: str) -> dict:
55    """Parse a LaTeX .log file into structured errors."""
56    errors = []
57    for line in log_text.splitlines():
58        if line.startswith("! "):
59            errors.append({
60                "message": line[2:],
61                "severity": "error",
62            })
63    return {"errors": errors, "success": len(errors) == 0}
64\end{lstlisting}
65
66\section{TypeScript}
67
68\begin{lstlisting}[language=Java, caption={Content-addressed storage (TypeScript)}, morekeywords={async, await, const, let, export, import, from, type}]
69export async function putCAS(
70  cas: R2Bucket,
71  content: Uint8Array,
72): Promise<string> {
73  const hash = await hashBytes(content);
74  const key = hash.replace("blake3-", "");
75  await cas.put(key, content);
76  return hash;
77}
78\end{lstlisting}
79
80\section{SQL}
81
82\begin{lstlisting}[language=SQL, caption={Query with CTE}]
83WITH recent_versions AS (
84  SELECT item_id, MAX(version_number) AS latest
85  FROM sublimated.versions
86  WHERE created_at > NOW() - INTERVAL '7 days'
87  GROUP BY item_id
88)
89SELECT i.name, i.type, rv.latest
90FROM sublimated.items i
91JOIN recent_versions rv ON rv.item_id = i.id
92ORDER BY rv.latest DESC;
93\end{lstlisting}
94
95\section{Plain Verbatim}
96
97For code without highlighting, use \texttt{verbatim}:
98
99\begin{verbatim}
100$ git clone sublimated.com/anton/paper.git
101$ cd paper
102$ vim main.tex
103$ git push origin main
104\end{verbatim}
105
106\end{document}