Hacker News with Generative AI: Common Lisp

Optimizing Common Lisp (fosskers.ca)
I recently released a Parser Combinator library for Common Lisp, but was unhappy with its performance. This article is a description of how I used sb-sprof, built in to SBCL, to identify both CPU and memory allocation hotspots, improving the runtime speed of the parcom/json module by 3x and decreasing memory allocation by 25x.

Programming, Optimization, Common Lisp, Performance

52 points by todsacerdoti 16 days ago | 6 comments

A simple Common Lisp web app (scotto.me)
One of the drawbacks of dealing with Common Lisp is the lack of documentation available. Too often, I find published libraries without an explanation of how to use them or only partially documented, and I need to dig into the source code to understand how they work or if that method is present or not.

Common Lisp, Web Development, Programming, Documentation

63 points by silcoon 23 days ago | 21 comments

Graphics livecoding in Common Lisp (kevingal.com)
Some Lisps, like Common Lisp, have a powerful feature that tends to go underappreciated amidst all the talk about macros: the ability to recompile your program while it's running, without restarting it.

Programming, Common Lisp, Livecoding

213 points by adityaathalye 30 days ago | 65 comments

Cl-Yasboi: Yet Another Starter Boilerplate for Common Lisp (github.com/sebastiancarlos)
cl-yasboi (pronounced Yas boi!) is a modern (so 2025), minimalist, opinionated, and flamboyant Common Lisp starter project. It's designed to be a source of inspiration and a starting point for your own projects.

Common Lisp, Programming, Starter Projects, Open Source, Software

11 points by todsacerdoti 41 days ago | 0 comments

Web Apps in Common Lisp (web-apps-in-lisp.github.io)
You want to write a web application in Common Lisp and you don’t know where to start? You are a beginner in web development, or a lisp amateur looking for clear and short pointers about web dev in Lisp? You are all at the right place.

Web Development, Common Lisp, Programming Languages

13 points by todsacerdoti 69 days ago | 1 comments

Redis from Scratch, or Cledis (jagg.github.io)
This week I was looking for something new, and I realised that I’ve never tried to do any network programming using Common Lisp. Also, some time ago I came across the Build your own Redis book, but never tried to go through it. The project is perfect, it contains threading, networking, and even some async programming. I had no idea what the Common Lisp ecosystem for those things looks like, so it was time to find out.

Programming Languages, Redis, Common Lisp

9 points by repost_bot 71 days ago | 0 comments

Depending in Common Lisp – Using the CLOS dependent maintenance protocol (2022) (stevelosh.com)
A while ago I was working on a Common Lisp library that makes use of the Metaobject Protocol. I ran into a few edge cases around dependencies between classes and it took a while for me to figure out how to solve them, so I wanted to write down what I learned in case anyone else might find it useful. This post is an expanded version of a Reddit thread I posted.

Common Lisp, Programming, Metaobject Protocol

100 points by florgy 87 days ago | 32 comments

These years in Common Lisp: 2023-2024 in review (gitlab.io)
This is a personal pick of the most interesting projects, tools, libraries and articles that popped-up in Common Lisp land in the last two years.

Programming, Common Lisp, Software, Reviews, 2023

204 points by trocado 94 days ago | 50 comments

Java JIT Compiler and Runtime in Common Lisp (github.com/atgreen)
OpenLDK is a Just-In-Time (JIT) compiler and runtime environment for Java, implemented entirely in Common Lisp.

Java, Common Lisp, Programming Languages, Runtime Environments, Compilers

8 points by nemoniac 106 days ago | 1 comments

Show HN: A Common Lisp implementation in development (nongnu.org)

Common Lisp, Programming Languages, Software Development, Open Source

18 points by andreamonaco 128 days ago | 9 comments

Why I Chose Common Lisp (djhaskin.com)
After ~7 years, I was done with Clojure. I was writing a some CLI apps, and I hated how long they took to start up. The community at large seemed not to care about this problem, except for the babashka folks. However, I spent long, hard hours banging my head against native-image and it just wasn't working out. It was incredibly painful, and at the end of it, I still didn't have standalone, fast-starting native executables.

Programming Languages, Clojure, Common Lisp, Performance, CLI

363 points by djha-skin 132 days ago | 191 comments

A Closed and Common Lisp (2021) (flooey.org)
I just recently finished up Advent of Code for 2021, and, like last year, I did it in a new-to-me language. This year’s choice was Common Lisp. My total previous exposure to Lisp was a couple weeks writing Scheme in my Programming Languages class at university, so it was almost entirely a novel experience.

Programming Languages, Common Lisp

7 points by AlexeyBrin 132 days ago | 0 comments

OCRing Music from YouTube with Common Lisp (nickfa.ro)
There's a tune on YouTube I always really liked called "Supersquatting." It was written by Dubmood and Zabutom, two really masterful chiptune composers, but this track always stood out to me as sounding really full and "fat."

Programming, Music, YouTube, Common Lisp

63 points by superdisk 138 days ago | 18 comments

The Long, Painful History of Time (1999) (naggum.no)
The programming language Common Lisp offers a few functions to support the concept of time as humans experience it, including GET-UNIVERSAL-TIME, ENCODE-UNIVERSAL-TIME, DECODE-UNIVERSAL-TIME, and GET-DECODED-TIME. These functions assume the existence of a timezone and a daylight saving time regime, such that they can support the usual expression of time in the environment in which a small number of real-life applications run.

Programming Languages, Time, History, Common Lisp

27 points by b-man 144 days ago | 7 comments

Common Lisp implementation of the Forth 2012 Standard (github.com/gmpalter)
Common Lisp implementation of the Forth 2012 Standard, CL-Forth

Programming Languages, Forth, Common Lisp

157 points by wild_egg 222 days ago | 88 comments

AP5 - Declarative Programming Library For Common Lisp (1995) (oceanpark.com)
This is a ruthlessly abridged presentation of AP5, a high level language, currently implemented as an extension to Common Lisp. I write this to communicate my discovery of a good language to others. Everything described is implemented.

Programming Languages, Common Lisp, Libraries

61 points by contrapunctus 225 days ago | 6 comments

Mount Unix system into Common Lisp image (github.com/PuellaeMagicae)

Unix, Common Lisp, Programming, Operating Systems, Software

107 points by BoingBoomTschak 244 days ago | 21 comments

Lisp Macros to Enable C Syntax in Common Lisp (github.com/y2q-actionman)

Lisp, Programming Languages, Macros, Syntax, Common Lisp

3 points by behnamoh 291 days ago | 0 comments

Common Lisp Documentation (l1sp.org)

Common Lisp, Programming Languages, Documentation

28 points by oumua_don17 325 days ago | 1 comments

Common Lisp Is Not a Single Language, but Many (aartaka.me)