VirtualTam's bookmarks

1. Cool, but obscure X11 tools 2023-07-22

   tags: desktop, graphics/2d, linux, unix, user-interface, x11

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2. HyperLogLog - Approximate the number of distinct elements in a set 2022-12-14

   tags: algorithm, database/postgresql, database/redis

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   • HyperLogLog: the analysis of a near-optimal cardinality estimation algorithm (PDF)
   • HyperLogLog in Practice: Algorithmic Engineering of a State of The Art Cardinality Estimation Algorithm
   • https://agkn.wordpress.com/2012/10/25/sketch-of-the-day-hyperloglog-cornerstone-of-a-big-data-infrastructure/
   • Redis new data structure: the HyperLogLog
   • https://www.reddit.com/r/programming/comments/21wshj/redis_new_data_structure_the_hyperloglog/
   • https://redis.uptrace.dev/guide/go-redis-hll.html
   • https://towardsdatascience.com/hyperloglog-a-simple-but-powerful-algorithm-for-data-scientists-aed50fe47869
   • https://odino.org/my-favorite-data-structure-hyperloglog/
   • http://blog.notdot.net/2012/09/Dam-Cool-Algorithms-Cardinality-Estimation
   • https://supabase.com/blog/seen-by-in-postgresql
   • https://www.citusdata.com/blog/2017/12/22/distributed-count-vs-hyperloglog/
3. Cool Guides 2018-11-09

   tags: guide, reddit

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4. Lenovo Thinkpad 13 + Linux - Feedback 2017-04-15

   tags: fan, hardware, hardware/cpu, heat, laptop, lenovo, linux, noise

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   +++: backlit keyboard, battery ++: HDPI matte screen, touchpad+trackpad -: BIOS messages in approximative English --: no ethernet port ---: cooling / fan noise

   ETH available through:

   • 10$ generic USB-C adapter
   • 25$ Lenovo USB-C adapter
   • 150$ Lenovo USB-C dock
   • 180$ Lenovo docking station

   Cooling / fan control:

   • triggered when the CPU reaches approx. 46° / 20% load
   • slowest speed: 3400 RPM (!), goes up to 4000+ RPM

   TODO:

   • try updating BIOS/UEFI
   • use a laptop cooling pad
   • killall -9 firefox # not really an option tho

   User-contributed feedback:

   • https://www.reddit.com/r/thinkpad/comments/4k2kzl/debian_on_the_thinkpad_13/
   • https://www.reddit.com/r/thinkpad/comments/4jh3wb/thinkpad_13_manjaroarch_impressions/
   • https://www.reddit.com/r/thinkpad/comments/4lzsks/my_thinkpad_13_experience_with_ubuntu_1604/
   • https://www.reddit.com/r/thinkpad/comments/4pieti/thinkpad_13_fan_vs_zenbook/
5. Tricopter - The Movie... 2015-07-20

   tags: arduino, atmega, diy, electronics, embedded, helicopter, linux, model

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   "This project was started in 2008. The goal was to learn something about programming, electronics and control loops. Because I always need a cool project to learn new things, it was clear that something that can fly had to be built."

   http://shrediquette.blogspot.fr/

6. Practical Common Lisp 2015-02-13

   tags: artificial-intelligence, code, development, programming, programming/functional-programming, programming/lisp

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   Beware! Very cool book dealing with Lisp programming, with plenty of examples

7. Python unit testing frameworks: Nose, Pytest 2015-02-13

   tags: code, coverage, feature, nose, programming/python, programming/python/pytest, programming/testing, quality, unit

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   Python's built-in unittest module is quite cool, but a bit limited and way too verbose (read: it's quite not easy to incite developers to write unit tests)

   I'm currently looking for more dev-friendly solutions, the key points being:

   • writing test code should be easy and straight-forward -keep the focus on "what to test" instead of "how to transcribe a process to a test"
   • parallelization! -we, spoiled developers, should make good use of our way-too-many-cores build machines...
   • complete feature set!
     • we don't want to just run tests...
     • coverage reports (find dead/weak/untested code sections)
     • output formatting (JUnit-XML seems to be quite a common format out there)

   There seem to be 3 solutions in Python:

   • stock unittest + project-dependent customizations / test helpers
   • nosetests
   • py.test

   And 2 ways of gettings things done:

   • keeping things stock: no external dependency, project-specific implementation...
   • using a test framework: one more module in your (test) virtualenv, more concise tests, more features (// run, code coverage, etc.)

   Some links:

   • http://stackoverflow.com/questions/22856638/nose-vs-pytest-what-are-the-subjective-differences-that-should-make-me-pick
   • http://helixyte.org/2014/04/unit-testing-adventures-moving-from-nose-to-pytest/
   • http://lists.idyll.org/pipermail/testing-in-python/2013-August/005624.html
8. Emacs as a Python IDE 2015-02-07

   tags: code, development, editor, editor/emacs, linux, programming/python, text

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   Very cool & detailed tutorial on how to setup Emacs for Python editing, completion & execution.

   https://github.com/jhamrick/emacs

9. nose: python testing helper 2015-01-04

   tags: continuous-integration, continuous-integration/jenkins, coverage, parallel, programming/python, programming/testing, unit

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   Includes support for Coverage, Xunit and other cool stuff ;-) Oh, and there is parallel testing, too \o/

   nosetests --with-coverage --cover-erase --cover-tests --cover-html --cover-html-dir=htmlcov --with-xunit --xunit-file=unit.xml

   via http://www.alexconrad.org/2011/10/jenkins-and-python.html

10. paigeadele - HydrogenTracks 2014-11-04

    tags: beats, digital-audio-workstation, hydrogen, instrument/drums, linux, source-code-management/github, tracks

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    Cool!

11. github - shaarli/Shaarli 2014-10-08

    tags: link, personal-knowledge/bookmark, shaarli, share, web

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    Semi-official fork; seems to be the place where cool things happen ;-)

12. Snarky Puppy - Lingus (We Like It Here) - YouTube 2014-06-08

    tags: cool, funk, groove, jazz, puppy, snarky

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13. Casualties of Cool: Casualties of Cool on PledgeMusic 2014-03-27

    tags: back, cool, crowdfunded, devin, pledge, stage, townsend

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14. Snuff Box - Guitar Lesson 2013-09-05

    tags: box, comedy, instrument/guitar, lesson, music, snuff, space

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    Hey kiddos! Wanna learn some cool riffs?

15. Lisp Downloads -=- Eric Marsden 2013-08-18

    tags: database/postgresql, development, editor/emacs, htcpcp, programming/emacs-lisp, programming/lisp, web

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    Cool Lisp modes, featuring coffee.el (HTCPCP) and some server (httpd, postgres) utils

16. Présentation de KrISS feed - Tontof 2013-05-30

    tags: feed, graph, programming/html, programming/latex, web/syndication

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    KrISS Feed et autres liens HTML super cool !