#commonlisp — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #commonlisp, aggregated by home.social.
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The blog post below is about the values of
(typep #(0 1 2) '(array integer))
(typep #(0 1 2) '(array (signed-byte 16)))
and similar.This matter _is_ actually detailed in the standard, but some careful reading is required.
Also, note the differences and the subtype relationships between
(array *)
(array t)
(array integer)
(array (signed-byte 16))<https://simondobson.org/2026/08/07/strange-behaviour-in-lisp-sub-typing/>
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The blog post below is about the values of
(typep #(0 1 2) '(array integer))
(typep #(0 1 2) '(array (signed-byte 16)))
and similar.This matter _is_ actually detailed in the standard, but some careful reading is required.
Also, note the differences and the subtype relationships between
(array *)
(array t)
(array integer)
(array (signed-byte 16))<https://simondobson.org/2026/08/07/strange-behaviour-in-lisp-sub-typing/>
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Emacs Lisp has had bignums for quite a few years now (even though it got them much later than other lisps).
See also `integer-length' and company.
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Emacs Lisp has had bignums for quite a few years now (even though it got them much later than other lisps).
See also `integer-length' and company.
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🎯 "Why write elegant poetry when you can just grunt in JavaScript?" wonders the author, who apparently prefers to vibe in a language so niche it requires a secret handshake to use. 😂 Clearly, targeting Common Lisp is the tech equivalent of choosing Latin for your blog posts—because who needs an audience? 🙄
http://funcall.blogspot.com/2026/08/why-vibe-code-in-lisp.html #elegantpoetry #JavaScript #CommonLisp #nicheprogramming #techhumor #HackerNews #ngated -
🎯 "Why write elegant poetry when you can just grunt in JavaScript?" wonders the author, who apparently prefers to vibe in a language so niche it requires a secret handshake to use. 😂 Clearly, targeting Common Lisp is the tech equivalent of choosing Latin for your blog posts—because who needs an audience? 🙄
http://funcall.blogspot.com/2026/08/why-vibe-code-in-lisp.html #elegantpoetry #JavaScript #CommonLisp #nicheprogramming #techhumor #HackerNews #ngated -
Why Target Common Lisp for Code Generation?
http://funcall.blogspot.com/2026/08/why-vibe-code-in-lisp.html
Comments: https://news.ycombinator.com/item?id=49269429
#HackerNews #CommonLisp #CodeGeneration #Programming #Language #Lisp
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Why Target Common Lisp for Code Generation?
http://funcall.blogspot.com/2026/08/why-vibe-code-in-lisp.html
Comments: https://news.ycombinator.com/item?id=49269429
#HackerNews #CommonLisp #CodeGeneration #Programming #Language #Lisp
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As feared, there's something afoot with nested clipping using the stencil buffer. But we now have kittens (images).
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As feared, there's something afoot with nested clipping using the stencil buffer. But we now have kittens (images).
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There are still things that aren't working, like textures for patterns or complex clipping regions but, this has been illuminating where my opengl-fixed-function-medium isn't quite as reusable as I want it nicely.
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There are still things that aren't working, like textures for patterns or complex clipping regions but, this has been illuminating where my opengl-fixed-function-medium isn't quite as reusable as I want it nicely.
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Lem editor news: code folding!
Bound to the TAB key, works out of the box.
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Lem editor news: code folding!
Bound to the TAB key, works out of the box.
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Public Lispy Gopher Climate sunday Morning in Europe stream - 8/9/2026, 7:51:55 AM
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I recently listened to an interesting podcast interview with Lua's creator. It got me thinking: Common Lisp, especially CMU CL and SBCL, offers impressive features like type inference. But who should they interview?
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I recently listened to an interesting podcast interview with Lua's creator. It got me thinking: Common Lisp, especially CMU CL and SBCL, offers impressive features like type inference. But who should they interview?
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I plan to stream #McCLIM dev things in about a 50 minutes, at 12pm CDT/17:00 UTC.
https://www.twitch.tv/endparen
I'm back at the problem of shoe-horning my #OpenGL fixed-function medium (renderer) into the alpha #SDL2 port
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I plan to stream #McCLIM dev things in about a 50 minutes, at 12pm CDT/17:00 UTC.
https://www.twitch.tv/endparen
I'm back at the problem of shoe-horning my #OpenGL fixed-function medium (renderer) into the alpha #SDL2 port
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I've converted many of the GLUT keyboard shortcuts I had to CLIM frame commands. Unless I'm missing something, I had to implement them in the more traditional GUI sense rather than being able to use CLIM gestures which I was hoping for.
It's been a fun exercise so far, but I'm going to pause on the conversion and experiment with ways to make the "gl-pane" as a clim-stream / presentation.
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I've converted many of the GLUT keyboard shortcuts I had to CLIM frame commands. Unless I'm missing something, I had to implement them in the more traditional GUI sense rather than being able to use CLIM gestures which I was hoping for.
It's been a fun exercise so far, but I'm going to pause on the conversion and experiment with ways to make the "gl-pane" as a clim-stream / presentation.
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i like parser combinators because writing it feels like expressing a DCG/BNF/smth
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i like parser combinators because writing it feels like expressing a DCG/BNF/smth
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...And after a couple more GL state fixes we have the 3D view rendering well with the interactor pane.
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...And after a couple more GL state fixes we have the 3D view rendering well with the interactor pane.
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With a few tweaks after I ended stream yesterday, we are much closer. The main difference is switching to make the `gl-window` pane a `gadget` instead of an `application-pane`...And also fixing the Y-flip.
The interactor pane is now not rendering well, so I need to track that down but otherwise I'm about ready to try converting mouse and keyboard input.
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With a few tweaks after I ended stream yesterday, we are much closer. The main difference is switching to make the `gl-window` pane a `gadget` instead of an `application-pane`...And also fixing the Y-flip.
The interactor pane is now not rendering well, so I need to track that down but otherwise I'm about ready to try converting mouse and keyboard input.
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Yes, this is an important feature¹.
Another benefit is that consuming some kinds of non-Lisp data is very easy to implement with reader macros.
As a quick example, reading assumed-to-be-valid JSON (at least in a good majority of cases) only needs one simple and five trivial macros.
(The ones for open brace and open bracket would use `read-delimited-list', of course.)_________
¹ Redundant to add, one should know what one is doing, naturally (for sharpsign-dot this includes assigning the correct value to `*read-eval*'). -
Yes, this is an important feature¹.
Another benefit is that consuming some kinds of non-Lisp data is very easy to implement with reader macros.
As a quick example, reading assumed-to-be-valid JSON (at least in a good majority of cases) only needs one simple and five trivial macros.
(The ones for open brace and open bracket would use `read-delimited-list', of course.)_________
¹ Redundant to add, one should know what one is doing, naturally (for sharpsign-dot this includes assigning the correct value to `*read-eval*'). -
Elia offers advice on picking a Lisp language to learn and presents the most relevant ones in active use: CommonLisp, Clojure, and Racket.
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Elia offers advice on picking a Lisp language to learn and presents the most relevant ones in active use: CommonLisp, Clojure, and Racket.
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«except, of course, for #CommonLisp which is a complete baroque mess.»
This is a big exaggeration.
«`#$(words)`»
This is not standard Common Lisp.
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«except, of course, for #CommonLisp which is a complete baroque mess.»
This is a big exaggeration.
«`#$(words)`»
This is not standard Common Lisp.
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@screwlisp @ramin_hal9001 "The great thing about #Lisp is that it has extremely simple syntax"
... except, of course, for #CommonLisp which is a complete baroque mess.
Of course, it's largely a complete baroque mess because reader macros, and reader macros are useful shorthand, but `#$(words)`? Really?
And noted also that #Clojure has its own baroquery hard-coded into its reader (`#{:a :b [:c @D]}`, anyone?), which is arguably worse, but...
This might as well be #Perl.
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@screwlisp @ramin_hal9001 "The great thing about #Lisp is that it has extremely simple syntax"
... except, of course, for #CommonLisp which is a complete baroque mess.
Of course, it's largely a complete baroque mess because reader macros, and reader macros are useful shorthand, but `#$(words)`? Really?
And noted also that #Clojure has its own baroquery hard-coded into its reader (`#{:a :b [:c @D]}`, anyone?), which is arguably worse, but...
This might as well be #Perl.
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Planning on streaming #McCLIM gui dev in an hour, at 11:30a CDT / 16:30 UTC.
https://www.twitch.tv/endparen
I wrote a semi-functional OBJ viewer when I first started learning Common Lisp and #OpenGL nearly 20 years ago. The code isn't pretty but it uses GLUT. I want to experiment changing it to a McCLIM app, keeping most of warts as-is -- just the minimum to replace GLUT.
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Planning on streaming #McCLIM gui dev in an hour, at 11:30a CDT / 16:30 UTC.
https://www.twitch.tv/endparen
I wrote a semi-functional OBJ viewer when I first started learning Common Lisp and #OpenGL nearly 20 years ago. The code isn't pretty but it uses GLUT. I want to experiment changing it to a McCLIM app, keeping most of warts as-is -- just the minimum to replace GLUT.
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common lisp quick reference
http://clqr.boundp.org/it'd be magnificent if this could be brought into the slime/sly documentation system somehow. existing docs leave much to be desired: overcomplicated details combined with lacking docstrings for basic functions.
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common lisp quick reference
http://clqr.boundp.org/it'd be magnificent if this could be brought into the slime/sly documentation system somehow. existing docs leave much to be desired: overcomplicated details combined with lacking docstrings for basic functions.
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Readings shared: July 27 – August 3, 2026. https://jaalonso.github.io/vestigium/posts/2026/08/03-readings_shared_08-03-26/ #AI #AI4Math #ATP #Autoformalization #CommonLisp #FunctionalProgramming #Haskell #ITP #IsabelleHOL #LLMs #LeanProver #Logic #Math #Ocaml #PVS #RocqProver
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Readings shared: July 27 – August 3, 2026. https://jaalonso.github.io/vestigium/posts/2026/08/03-readings_shared_08-03-26/ #AI #AI4Math #ATP #Autoformalization #CommonLisp #FunctionalProgramming #Haskell #ITP #IsabelleHOL #LLMs #LeanProver #Logic #Math #Ocaml #PVS #RocqProver
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As a first approximation, I suggest thinking of Emacs Lisp as closer to MacLisp than to Common Lisp.
A precise description of "closer" would be fairly long.
For example, Emacs Lisp acquired things like bignums and lexical bindings fairly late.Again as an approximation, the descendancies are:
MacLisp → Emacs Lisp
MacLisp and others → Common Lisp
(Those others include, in alphabetical order, Interlisp, Scheme, Zeta Lisp, etc., but not Emacs Lisp.)And then an important aspect of these approximations is the `cl' package, also a late addition that evolved quite a bit.
Transferring knowledge about C to Emacs Lisp is rather tricky, even though the implementation of a part of Emacs (including the Emacs Lisp virtual machine) is written in C.
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As a first approximation, I suggest thinking of Emacs Lisp as closer to MacLisp than to Common Lisp.
A precise description of "closer" would be fairly long.
For example, Emacs Lisp acquired things like bignums and lexical bindings fairly late.Again as an approximation, the descendancies are:
MacLisp → Emacs Lisp
MacLisp and others → Common Lisp
(Those others include, in alphabetical order, Interlisp, Scheme, Zeta Lisp, etc., but not Emacs Lisp.)And then an important aspect of these approximations is the `cl' package, also a late addition that evolved quite a bit.
Transferring knowledge about C to Emacs Lisp is rather tricky, even though the implementation of a part of Emacs (including the Emacs Lisp virtual machine) is written in C.
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RE: https://cosocial.ca/@robpike/117022640766299461
Put In Seven Extremely Random User Interface Commands.
(See the second edition about what ruined that.)
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RE: https://cosocial.ca/@robpike/117022640766299461
Put In Seven Extremely Random User Interface Commands.
(See the second edition about what ruined that.)
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A very little about #acl2 and #commonLisp - reading some Kaufmann and Moore on floats.
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Public Lispy Gopher Climate sunday Morning in Europe stream - 8/2/2026, 8:01:16 AM
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Just spent a day and a half hunting down a bug that was making me question my sanity. As it turns out, #emacs #lisp's/function silently drops the decimal in its result if both of its inputs are integers... so(/ 1 2)evaluates to0, not0.5. Granted, this is also the way that C does it, but in my defense, #CommonLisp does not do this.