Just spent a while trying to work out why my initial websocket messages weren't being sent, only to discover that the Firefox websocket inspector misses messages that are sent immediately after the websocket opens. https://bugzilla.mozilla.org/show_bug.cgi?id=1719394

There was no discussion on how requiring UK adults to submit identifying information to third-party age-gating companies is a security risk. There was no discussion on whether Ofcom's ability to issue Technology Notices to force companies to insert backdoors into their E2E encryption undermines […]

I found it interesting to read the transcript of the UK petitions committee debate on the Online Safety Act today. Most of the discussion was on the dangers posed to children online; some of it was about smaller forums being unduly burdened; none of was about the many technical issues with the […]

Three-finger scrolling in #paperwm is broken on Gnome 49, so I've been trying out the #niri window manager with dms as an alternative. So far it feels snappy and polished - I'm very impressed! My only real complaint is that it lacks an option to turn off window snapping when scrolling.

Does anyone have any recommendations for simple collaborative online whiteboards? I need something that can add sticky-notes, has realtime collaboration, and allows users to join via a share link (without needing a login).

I've created a Homebrew tap to install the #clojure code formatter, cljfmt: brew install weavejester/brew/cljfmt

I've returned to an old #clojure project of mine: a simple templating system called Comb that was inspired by Ruby's erb library. Comb hasn't changed for 10 years, so long past time it was made stable. I've released version 1.0.0 with the only change being some extra clj-kondo metadata to make […]

cljfmt 0.15.4 has just been released. cljfmt is a formatter for #clojure code.

cljfmt 0.15.1 has been released, with support for aligning maps and bindings forms into neat columns (a harder problem than you might expect!). cljfmt is a code formatter for #clojure. https://github.com/weavejester/cljfmt

About syntax highlighting https://tonsky.me/blog/syntax-highlighting/

Duct now has a proper website at https://duct-framework.org/ - albeit one where responsiveness is a work in progress. Duct is a #clojure framework for server-side development that bases itself on an immutable data structure rather than a file tree layout.

I've used Spacemacs for some years now as my primary editor, but recently I've been looking into #neovim. It starts up a lot quicker, even with a bunch of plugins, and surprisingly for a terminal editor it has a more sophisticated UI than windowed Emacs.

Thanks @nikitonsky for helping me convert my #clojure library Integrant-REPL to use clj-reload, which is smarter about reloading than the older tools.namespace library. https://github.com/weavejester/integrant-repl

Ring 1.15.1 has been released. This fixes a small bug in the content-length middleware. https://github.com/ring-clojure/ring I've also released Ring-Defaults 0.7.0, a #clojure library that supplies sensible default middleware configurations for Ring-based applications […]

Integrant 1.0.0 has been released, a #clojure microframework for creating data-driven applications. Not much has changed since 0.13.1 was released a year ago, but the API can now be considered stable. https://github.com/weavejester/integrant

I've also released Ring 1.15.0-RC1. This is the first release candidate for Ring 1.15, a #clojure web abstraction library. Ring 1.15 adds a wrap-content-length middleware function, and acceptor/selector thread number options to the default Jetty adapter. https://github.com/ring-clojure/ring

I've release Ragtime 0.12.0 with support for SQL migrations that use Clojure functions - in case you need a little more logic than raw SQL. Ragtime is a #clojure library for handling database migrations. https://github.com/weavejester/ragtime

Released Ring 1.15.0-beta2, a #clojure web abstraction library. This beta release adds support for configuring acceptor and selector thread pool sizes in the included Jetty adapter. https://github.com/ring-clojure/ring

Released Medley 1.9.0, a #clojure utility library, with new functions: find-in, index-of and window. https://github.com/weavejester/medley

After trying out Copilot for a while, there are currently two major use-cases for LLMs. First, they're good at searching through documentation and giving relevant information to questions, as long as you have a way of verifying the answers. Second, they're good at reading unstructured data and […]

I experimented with using Copilot with ChatGPT 5 to do some analysis and refactoring, to get an idea of what state of the art was. It managed some simple improvements, but still made errors that had to be manually corrected, such as not replacing all calls for a function it moved around.

I tried out writing a small single-page web app with Copilot with ChatGPT 4.1. It was broadly competent at writing individual functions, but made some very elementary mistakes (e.g. putting Javascript outside the script tags). It didn't have a consistent style or good organisational skills, and […]

I've put out a release candidate of Integrant 1.0.0, which is essentially the same as 0.13.1 but with the deprecations removed. Integrant is a #clojure micro-framework for data-driven applications. https://github.com/weavejester/integrant

Duct is now in a pre-1.0.0 beta, with a stable release looming on the horizon. Duct is a #clojure application framework with an emphasis on web development. The complete docs and a full tutorial is at: https://duct-framework.github.io/

I've recently released Ring 1.15.0-beta1 for #clojure. This includes some improvements to response streaming, and the addition of wrap-content-length middleware for string and file response bodies. https://github.com/ring-clojure/ring

I've released a small library for building TCP servers in #clojure, TeensP. https://github.com/weavejester/teensyp

Electric #clojure: Differential Dataflow for UI - a talk at #reclojure 2025 from Dustin Getz - is up on YouTube: https://www.youtube.com/watch?v=ML8cFrWkWeg

Released Ring 1.14.2 to fix a vulnerability with Apache FileUpload (https://nvd.nist.gov/vuln/detail/CVE-2025-48976) #clojure

UI, Pure and Simple - a talk at #reclojure 2025 by @christian - is now up on YouTube: https://www.youtube.com/watch?v=AGTDfXKGvNI #clojure #clojurescript #reclojure2025

The first video from reClojure 2025 is up, the keynote from Nathan Marz on Rama and Specter: https://youtu.be/25lJNRibYv8?si=isciQ6drJJAiGI7y

#reclojure2025 was a resounding success, and thanks go out to everyone who pitched in! We should have the first videos out by next week on the London Clojurians YouTube channel (https://www.youtube.com/@LondonClojurians), and we'll stagger the release of the videos to about 2 every week.

It's just 2 weeks until #reclojure 2025, a community-drive #clojure conference that is being held on May 26th in London, UK. There will be talks on Rama, Datomic, Electric Clojure, LLMs, Brain-Computer interfaces, and more. There's still time to pick up tickets and attend […]

I've just released Ring-Mock 0.6.1 with support for multipart encoding, so you can more easily test file uploads in your #clojure web applications. https://github.com/ring-clojure/ring-mock

I've finally gotten an excuse to use Specter, a #clojure library for parsing and transforming data structures. Most of the data transformation I do is pretty straightforward, but converting Reitit routes was complex enough that Specter was a good fit. https://github.com/redplanetlabs/specter

I've just released Hashp 0.4.0, a small #clojure debugging library, with new configuration options. https://github.com/weavejester/hashp

I've released Ring 1.14.0 with support for Jetty 12 and WebSocket tuning options for idle timeout and max message size. #clojure https://github.com/ring-clojure/ring

Released Ring 1.13.1 (and Ring-Codec 1.3.0). Some minor bugfixes and dependency updates. https://github.com/ring-clojure/ring

Tickets for #reclojure2025 are now on sale. #reclojure is a community driven conference that will take place in London, on May 26th. We have a limited number of tickets, so book early to ensure you get to attend! https://www.reclojure.org/

Very much liking #paperwm, a scrolling tiling WM extension for GNOME: https://github.com/paperwm/PaperWM Historically I haven't gotten on well with tiling WMs, so I'm surprised at how well the scrolling kind work for me.

There's just 2 weeks left to submit a talk for #reclojure 2025, a community-run #clojure conference that will take place in London in May. https://www.reclojure.org/

It looks like the UK has decided to begin mandating backdoors in phone cloud backups, presumably to make it easier for Russia to spy on us. https://www.theguardian.com/technology/2025/feb/07/uk-confronts-apple-with-demand-for-cloud-backdoor-to-users-encrypted-data

I just updated an small, old #clojure library of mine and released a 1.0.0 version: https://github.com/weavejester/progrock

I wrote up a sketch of a #clojure inspired #lisp. I don't intend to write an interpreter for it; I wrote it mostly to get it out of my head. https://gist.github.com/weavejester/b65d67e950ead19969ebfb21957df1b8

I've also just released Ring-Defaults 0.6.0, a #clojure library that provides a sensible default set of Ring middleware. In this version the custom X-Ring-Anti-Forgery header is added to force preflight checks for XHR, along with the websocket-keepalive middleware to periodically ping websocket […]

I've released Ring-Anti-Forgery 1.4.0, a #clojure library for CSRF prevention. The new version has less dependencies and a new :safe-header option. https://github.com/ring-clojure/ring-anti-forgery/

#clojure is cool: https://grishaev.me/ring-jdk-adapter/ So with a JVM, Clojure, Ring, and this adapter, one can already write high-level web services. Add java.JDBC and data.JSON and a compact functional web stack emerges.

When making a service in Clojure, where possible, it should follow the pattern of: (service-fn option-map) -> Closeable Unless there's a very good reason not to.

Whenever I find myself writing a Clojure front end to an existing library or tool, it's always far more difficult if that library uses global state or external configuration files.

#reclojure 2025 is a #clojure conference that will take place in London on May 26th next year. It's just announced its call for speakers, so if you're a Clojure developer interested in giving a talk, please visit: https://www.reclojure.org/

Ragtime 0.10.0 has been released https://github.com/weavejester/ragtime]. This is a #clojure library for managing migrations. The latest version adds support for syntax that makes writing SQL migrations easier [[https://github.com/weavejester/ragtime/wiki/SQL-Migrations].