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"01a08786-6619-71b4-8c71-e96ef5cf56ca", "title": "Purely Functional Data Structures & Algorithms : Red-Black Trees in Qi", "url": "https://imagine27.com/post/purely_functional_types_red_black_trees_in_qi/", "published_at": "2011-06-28T14:11:24+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96ef6aee3e4", "title": "Chaitin Proving Darwin", "url": "https://imagine27.com/post/chaitin_proving_darwin/", "published_at": "2011-06-16T15:26:56+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96ef78c3c3b", "title": "Spring/Summer 2011 Books", "url": "https://imagine27.com/post/spring_summer_2011_reading/", "published_at": "2011-06-15T10:56:58+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96ef88a8dd7", "title": "Happy PI day ! (in QiII)", "url": "https://imagine27.com/post/happy_pi_day_in_qi2/", "published_at": "2011-03-14T08:42:57+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96ef8d3ad63", "title": "Philosophy and Lisp", "url": "https://imagine27.com/post/philosophy/", "published_at": "2011-01-08T14:02:27+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96ef992744f", "title": "Artificial Intuition", "url": "https://imagine27.com/post/artificial_intuition/", "published_at": "2010-12-19T22:29:02+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96ef9c5e6db", "title": "Anaphoric(aka \"Un-hygenic\") macros in CL", "url": "https://imagine27.com/post/cl_anaphoric_macros/", "published_at": "2010-10-23T17:35:50+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96efa64c7cf", "title": "Ruby compiler in CL", "url": "https://imagine27.com/post/ruby_subset_implementation/", "published_at": "2010-10-07T08:47:56+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96efb2de2bc", "title": "Facts about STM", "url": "https://imagine27.com/post/does_stm_measure_up/", "published_at": "2010-09-19T09:49:56+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96efbfa4bb9", "title": "π in assembly (spigot algorithm)", "url": "https://imagine27.com/post/spigot_pi_in_asm/", "published_at": "2010-07-22T09:25:30+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96efc9e19f2", "title": "Google to acquire ITA ?", "url": "https://imagine27.com/post/google_buying_ita/", "published_at": "2010-06-29T20:51:17+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96efd094ccc", "title": "Summer 2010 reading", "url": "https://imagine27.com/post/summer_2010_reading/", "published_at": "2010-06-19T14:13:23+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96efd63fafb", "title": "So you say that programming language choice does not matter ...", "url": "https://imagine27.com/post/you_say_that_language_does_not_matter/", "published_at": "2010-06-16T11:39:07+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96efdbb1b33", "title": "Convex Hull with Aki-Toussaint heuristics", "url": "https://imagine27.com/post/convex_hull_heuristics/", "published_at": "2010-06-02T20:18:55+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96efe1378fd", "title": "Bucket sort (Clojure)", "url": "https://imagine27.com/post/clojure_bucket_sort/", "published_at": "2010-05-24T21:42:30+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96efef4fa6d", "title": "The Dangers of Computer Science Theory", "url": "https://imagine27.com/post/dangers_of_computer_science_theory/", "published_at": "2010-05-15T09:32:06+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96eff78cd12", "title": "A molecule viewer in Clojure", "url": "https://imagine27.com/post/molecule_viewer_in_clojure/", "published_at": "2010-03-30T18:43:55+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f0063e716", "title": "Happy π approximation day/night (in assembly) !", "url": "https://imagine27.com/post/happy_pi_approx_day_in_asm/", "published_at": "2010-03-14T07:22:00+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f00f87aac", "title": "Do you really know Lisp ?", "url": "https://imagine27.com/post/do_you_really_know_lisp/", "published_at": "2010-02-26T10:05:53+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f01f40e73", "title": "Palindromes (Clojure)", "url": "https://imagine27.com/post/palindromes_clojure/", "published_at": "2009-12-25T17:45:40+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f024b06c9", "title": "Winter 2009 reading", "url": "https://imagine27.com/post/winter_2009_reading/", "published_at": "2009-12-09T00:55:13+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f0270eeb7", "title": "The Half-Life of Knowledge", "url": "https://imagine27.com/post/the_half_life_of_knowledge/", "published_at": "2009-10-17T21:29:01+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f032c3599", "title": "\"The Two Cultures of Mathematics\"", "url": "https://imagine27.com/post/the_2_cultures_of_mathematics/", "published_at": "2009-10-13T01:21:03+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f0382cedb", "title": "Clojure Quine", "url": "https://imagine27.com/post/clojure_quine/", "published_at": "2009-09-18T20:39:46+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f0406663d", "title": "Play Pong!", "url": "https://imagine27.com/post/play_pong/", "published_at": "2009-09-14T12:45:16+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f04582758", "title": "Pong! (in Clojure)", "url": "https://imagine27.com/post/pong_in_clojure/", "published_at": "2009-09-12T12:26:05+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f04cb55d8", "title": "Calculating π in Clojure (Salamin-Brent)", "url": "https://imagine27.com/post/pi_in_clojure/", "published_at": "2009-08-21T13:17:39+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f059194f6", "title": "Another slice of π ?", "url": "https://imagine27.com/post/another_slice_of_pi/", "published_at": "2009-08-10T10:41:59+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f0598b33e", "title": "Generating π in Haskell", "url": "https://imagine27.com/post/generating_pi_in_haskell/", "published_at": "2009-07-23T09:42:12+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f068ffa96", "title": "Generating π in CL (faster)", "url": "https://imagine27.com/post/generating_pi_in_cl_faster/", "published_at": "2009-07-23T09:37:26+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f071d452b", "title": "Generating π in CL", "url": "https://imagine27.com/post/generating_pi_in_cl/", "published_at": "2009-07-22T13:44:05+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f079fd118", "title": "A fast MAPCONCAT implementation in Common Lisp", "url": "https://imagine27.com/post/a_fast_mapconcat_implementation_in_common_lisp/", "published_at": "2009-07-10T23:12:43+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f0881e256", "title": "It's good to be wrong about Lisp performance", "url": "https://imagine27.com/post/its_good_to_be_wrong/", "published_at": "2009-05-06T11:34:23+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f08b451cc", "title": "IWTB (in Lisp performance) - a followup", "url": "https://imagine27.com/post/iwtb_in_lisp_performance_followup/", "published_at": "2009-05-04T18:58:02+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f094fca67", "title": "I want to believe (in Lisp performance)", "url": "https://imagine27.com/post/i_want_to_believe_in_lisp_performance/", "published_at": "2009-05-03T19:52:27+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f09545a80", "title": "Integral Calculus in Lambda Calculus (Lisp)", "url": "https://imagine27.com/post/integral_calculus_in_lambda_calculus_lisp/", "published_at": "2009-04-09T16:18:39+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f095fccac", "title": "Visualization of SBCL development history since 2000", "url": "https://imagine27.com/post/visualization_of_sbcl_dev_history/", "published_at": "2009-04-09T02:05:11+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f0a0f888b", "title": "Live Lisp coding as art.", "url": "https://imagine27.com/post/live_lisp_art_opengl_synth_sound/", "published_at": "2009-04-09T01:01:47+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f0aada68c", "title": "Problems with optimizing Common Lisp code", "url": "https://imagine27.com/post/cl_hard_to_compile_efficiently/", "published_at": "2009-04-07T13:52:46+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f0b7f3d73", "title": "A language analogy for the decade", "url": "https://imagine27.com/post/analogy_for_the_decade/", "published_at": "2009-04-05T01:42:19+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f0c33c652", "title": "Books for Spring 2009", "url": "https://imagine27.com/post/books_for_spring_2009/", "published_at": "2009-03-21T13:39:11+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f0ce8951e", "title": "Lisp50 update", "url": "https://imagine27.com/post/lisp50-update/", "published_at": "2008-10-20T14:07:00+00:00" }, { "id": "01a08786-6619-71b4-8c71-e96f0d5a9754", "title": "The state of non-commerical CL implementations", "url": "https://imagine27.com/post/the-state-of-non-commerical-cl-implementations/", "published_at": "2008-08-03T15:14:23+00:00" } ] posts Claim your blog

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2026

Larger Than Live original ↗

7 Sept 2026

Martian Moneyball original ↗

7 Sept 2026

The First Scaling Theory original ↗

30 Aug 2026

Go, five years later original ↗

30 Aug 2026

When will Rust be formally specified ?original ↗

30 Aug 2026

O-notation considered harmful (use Analytic Combinatorics instead)original ↗

30 Aug 2026

The Quantum Threat original ↗

30 Aug 2026

2021

Go is Korean, Lisp is Japanese original ↗

6 Oct 2021

Lesser Known Origins Of The Technical Interview original ↗

11 Sept 2021

Dear recruiter - a canned response to a canned email original ↗

11 Sept 2021

Some thoughts on consensus algorithms for blockchains original ↗

22 May 2021

Fedora Zen Kernels original ↗

9 Feb 2021

2020

Startup cults & Totalitarian teams original ↗

10 Nov 2020

Rise of the MacBook Pro Serial Killers original ↗

18 Jul 2020

The simplicity of Crypto Currency original ↗

5 May 2020

Hello Immortal World with Rust original ↗

10 Jan 2020

Seattle : future city original ↗

6 Jan 2020

The Golden 20s original ↗

1 Jan 2020

2019

jay@imagine27.com original ↗

24 Dec 2019

Error handling or The Emperor's Old Clothes.original ↗

3 Dec 2019

Everyday Ada : Simple REST Service original ↗

6 Oct 2019

Raspberry Pi 4 original ↗

22 Sept 2019

Ada, Rust and Steelman language requirements original ↗

10 Sept 2019

Happy PI day with Rust !original ↗

14 Mar 2019

Signal Desktop for Arm/Linux original ↗

27 Feb 2019

2016

Singular Value Decomposition explained circa 1976 original ↗

25 Jan 2016

2015

Two sorts with Rust original ↗

3 Dec 2015

2014

Ring probabilities in F#original ↗

6 Nov 2014

Ring probabilities with Elixir original ↗

26 May 2014

2013

Corporate funding for Shen original ↗

26 Dec 2013

2012

Purely Functional Data Structures & Algorithms : Selection Sort original ↗

30 Aug 2012

Death lies on her, like an untimely frost original ↗

22 Aug 2012

Purely Functional Data Structures & Algorithms : Union-Find (Haskell)original ↗

22 Aug 2012

Purely Functional Data Structures & Algorithms : Union-Find original ↗

19 Aug 2012

Codebreaker - A new film about the life of Alan Turing original ↗

16 Aug 2012

Bayes's Theorem is more powerful than Jesus original ↗

13 Aug 2012

Alan Kay on Programming today (and a few other things)original ↗

10 Jul 2012

The Alan Turing buffet original ↗

25 Jun 2012

Moore's Law is "dead"original ↗

24 Jun 2012

Spring 2012 books original ↗

18 Jun 2012

Computers for Cynics original ↗

11 Jun 2012

Cognitive Robotics And Artificial Intelligence original ↗

7 Jun 2012

Chronicle original ↗

4 Jun 2012

Experimental change original ↗

31 May 2012

Welcome to John McCarthy's new website.original ↗

2 Apr 2012

Quick Sort in Shen original ↗

2 Apr 2012

Quick Sort in Common Lisp original ↗

30 Mar 2012

Happy Pi Day in Shen original ↗

14 Mar 2012

Robot readable world original ↗

25 Feb 2012

Smile or Die (AKA Mandatory Optimism)original ↗

25 Feb 2012

The hundred-year language will be regulated original ↗

15 Jan 2012

2011

Clojure/Conj 2011 original ↗

11 Nov 2011

Overtone original ↗

2 Oct 2011

Shen/Kl arrive original ↗

23 Sept 2011

40 Year Old 3D Computer Graphics (Pixar, 1972)original ↗

11 Sept 2011

ClojureScript Demo : Convex Hull original ↗

23 Jul 2011

Purely Functional Data Structures & Algorithms : Fast Fourier Transform in Qi original ↗

6 Jul 2011

Purely Functional Data Structures & Algorithms : Red-Black Trees in Qi original ↗

28 Jun 2011

Chaitin Proving Darwin original ↗

16 Jun 2011

Spring/Summer 2011 Books original ↗

15 Jun 2011

Happy PI day ! (in QiII)original ↗

14 Mar 2011

Philosophy and Lisp original ↗

8 Jan 2011

2010

Artificial Intuition original ↗

19 Dec 2010

Anaphoric(aka "Un-hygenic") macros in CL original ↗

23 Oct 2010

Ruby compiler in CL original ↗

7 Oct 2010

Facts about STM original ↗

19 Sept 2010

π in assembly (spigot algorithm)original ↗

22 Jul 2010

Google to acquire ITA ?original ↗

29 Jun 2010

Summer 2010 reading original ↗

19 Jun 2010

So you say that programming language choice does not matter ...original ↗

16 Jun 2010

Convex Hull with Aki-Toussaint heuristics original ↗

2 Jun 2010

Bucket sort (Clojure)original ↗

24 May 2010

The Dangers of Computer Science Theory original ↗

15 May 2010

A molecule viewer in Clojure original ↗

30 Mar 2010

Happy π approximation day/night (in assembly) !original ↗

14 Mar 2010

Do you really know Lisp ?original ↗

26 Feb 2010

2009

Palindromes (Clojure)original ↗

25 Dec 2009

Winter 2009 reading original ↗

9 Dec 2009

The Half-Life of Knowledge original ↗

17 Oct 2009

"The Two Cultures of Mathematics"original ↗

13 Oct 2009

Clojure Quine original ↗

18 Sept 2009

Play Pong!original ↗

14 Sept 2009

Pong! (in Clojure)original ↗

12 Sept 2009

Calculating π in Clojure (Salamin-Brent)original ↗

21 Aug 2009

Another slice of π ?original ↗

10 Aug 2009

Generating π in Haskell original ↗

23 Jul 2009

Generating π in CL (faster)original ↗

23 Jul 2009

Generating π in CL original ↗

22 Jul 2009

A fast MAPCONCAT implementation in Common Lisp original ↗

10 Jul 2009

It's good to be wrong about Lisp performance original ↗

6 May 2009

IWTB (in Lisp performance) - a followup original ↗

4 May 2009

I want to believe (in Lisp performance)original ↗

3 May 2009

Integral Calculus in Lambda Calculus (Lisp)original ↗

9 Apr 2009

Visualization of SBCL development history since 2000 original ↗

9 Apr 2009

Live Lisp coding as art.original ↗

9 Apr 2009

Problems with optimizing Common Lisp code original ↗

7 Apr 2009

A language analogy for the decade original ↗

5 Apr 2009

Books for Spring 2009 original ↗

21 Mar 2009

2008

Lisp50 update original ↗

20 Oct 2008

The state of non-commerical CL implementations original ↗

3 Aug 2008