Archive for the ‘Conference Topics’ Category
Posted by jpluimers on 2025/10/14
I was in my 50s when I learned that both algorism and algorithm are named after the 9th-century Persian mathematician Muhammad ibn Musa al-Khwarizmi who founded algebra.
Related:
Via:
–jeroen
Posted in Algorithms, Conference Topics, Conferences, Development, Event, History, Software Development | Leave a Comment »
Posted by jpluimers on 2025/10/01
The whole idea of “community questions” was to create collective topics or references about important material without gaining any “points”.
Stack Exchange has left that concept in the dark by closing questions like this 2010 one that still contains relevant links: [Wayback/Archive] Sites for beginning Delphi programmers – Stack Overflow
The next step by their moderators is to delete the question, which will lose the valuable material forever.
Stack Exchange also dislikes humour.
And Embarcadero keeps deleting useful sites.
So for posterity, here is the question plus answers in full, amended with archived versions of each link when still available (I used † to mark the dead ones):
Posted in Conference Topics, Conferences, Delphi, Development, Event, Pingback, Software Development, Stackoverflow | 1 Comment »
Posted by jpluimers on 2025/09/19
In a German thread, Kristian Köhntopp perfectly explained why I too always use light mode, so I put the English translations here:
- Dark mode is a strain on the eyes and useless.
- Specific: In darkness (and in dark mode) your pupils widen, the diaphragm opens. This reduces the depth of field and the eye muscles have to do more work and precision when focusing.
- Conversely, with light and a bright background you have a smaller pupil, a small aperture and more depth of field. This means that everything is automatically sharp, even if the eye has not readjusted.
The German thread:
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Posted in accessibility (a11y), Conference Topics, Conferences, Development, Event, LifeHacker, User Experience (ux) | Leave a Comment »
Posted by jpluimers on 2025/08/06
Sometimes I need [Wayback/Archive] Redirect Checker | Check your Statuscode 301 vs 302 on the command-line, so cURL to the rescue: [Wayback/Archive] linux – Get final URL after curl is redirected – Stack Overflow. The relevant portions of answers and comments further below.
TL;DR:
Since I prefer verbose command-line arguments (you can find them at the [Wayback/Archive] curl – How To Use on-line man page) especially in scripts this HTTP GET request is what works with Twitter:
% curl --location --silent --output /dev/null --write-out "%{url_effective}\n" https://twitter.com/anyuser/status/20
https://x.com/anyuser/status/20
This failed (twitter dislikes HTTP HEAD requests):
% curl --head --location --silent --output /dev/null --write-out "%{url_effective}\n" https://twitter.com/anyuser/status/20
https://twitter.com/anyuser/status/20
Notes
Given so many of my scripts now run on zsh, I added the new-line because of command line – Why does a cURL request return a percent sign (%) with every request in ZSH? – Stack Overflow. You can strip that bit.
Note that these do not perform client side redirects, so they do not return the ultimate originating URL https://x.com/jack/status/20 (which was the first ever Tweet on what was back then called twttr) as Twitter on the client-side overwrites window.location.href with the final URL. Similar behaviour for getting the Twitter user handle of a Twitter user ID, more on Twitter tricks below.
Tweet by TweetID trick via [Wayback/Archive] Accessing a tweet using only its ID (and without the Twitter API) – Bram.us.
Further reading (thanks [Wayback/Archive] vise, [Wayback/Archive] Daniel Stenberg, [Wayback/Archive] Ivan, [Wayback/Archive] AndrewF, [Wayback/Archive] Roger Campanera, and [Wayback/Archive] Dave Baird):
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Posted in *nix, *nix-tools, bash, Batch-Files, Bookmarklet, Communications Development, Conference Topics, Conferences, CSS, cURL, Development, Event, HTTP, Internet protocol suite, JavaScript/ECMAScript, Power User, Scripting, SocialMedia, Software Development, TCP, Twitter, Web Browsers, Web Development | Tagged: 76 | Leave a Comment »
Posted by jpluimers on 2025/08/01
A few notes after I helped updating [Wayback/Archive] Chocolatey Software | SetACL (Portable) 3.0.6.0 to version 3.1.2.0 and [Wayback/Archive] Updates glab from 1.22.0 to 1.24.1; fixes #2 by jpluimers · Pull Request #3 · corbob/ChocoPackages.
As the burden on maintainers (not just Chocolatey ones) is high, not all packages get updated soon after new underlying software versions arrive.
Which means the maintainers are often very happy when an occasional user helps and preferably sends in a pull request.
That brings me to the an important point IN DOCUMENTATION DO NOT LIMIT EXAMPELS TO ONLY ABBREVIATED PARAMETERS OR VERBS as that scares away occasional and novice users of your software.
Chocolatey documentation is no exception on this, hence this blog post meant for people other than maintaining chocolatey packages on a day to day base.
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Posted in CertUtil, Chocolatey, CommandLine, Conference Topics, Conferences, Development, Event, Power User, PowerShell, PowerShell, Scripting, Software Development, Windows | Tagged: 2, 2850, 3, 309, 561 | Leave a Comment »
Posted by jpluimers on 2025/07/21
This started out ad a post to make things easier for my mentally brother, but then I figured it makes it so much easier for myself as well: getting rid of the evern returning Windows nag screens. Not just the ones after logon during initial Windows install that get back about every other Windows 20H update (thank god they stepped away from 19## version numbering that felt so, ehm, last millennium), but also the various “suggestions” in start menu, on the taskbar and elsewhere.
I understand that basically giving Windows 10 and 11 for free to many Windows 7/8 licensed machines or Windows-preinstalled machines induces Microsoft to see Windows as an advertising environment, but hey: many users can do without these distractions.
It is hard to solve, as even the underlying registry settings seem to be reset every once in a while, and solving it globally is not an option: the settings are a per-user one. Which means you need to run script early during every Windows logon to overwrite these settings.
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Posted in Batch-Files, CommandLine, Conference Topics, Conferences, Development, Event, Power User, PowerShell, PowerShell, Registry Files, Scripting, Software Development, Windows, Windows 10, Windows 11, Windows Development | Tagged: 48 | Leave a Comment »
Posted by jpluimers on 2025/07/16
As a keyboard person, I prefer to live on the CLI (command-line interface), so when possible I prefer command-line tools over GUI tools (especially since command-line tool are way easier to script).
In the past on non-Windows systems I used gist (see below), but that is not available on Windows unless you have a Ruby environment.
Some notes on Windows to install and authenticate GitHub CLI (gh) and GitLab CLI (glab), both of which I previously mentioned in Tribal Knowledge? Getting the public keys from github and gitlab users from their username.
For me, installing is easiest through Chocolatey (version numbers from the time of writing; the non-archived URLs point to the most current version available):
This was my install script:
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Posted in Conference Topics, Conferences, Development, DVCS - Distributed Version Control, Event, git, GitHub, GitLab, Power User, Software Development, Source Code Management | Tagged: 233 | Leave a Comment »
Posted by jpluimers on 2025/07/08
While writing Some SQLite things I recently learned a while ago I bumped into SQLite extending the SQL syntax allowing SELECT column aliases in WHERE and ON conditions of JOIN clauses whereas standard SQL only allows it in the HAVING clause (some other DMBS allow this as well).
It reminded I never wrote a blog post about WHERE versus HAVING, which can be phrased into just two points:
WHERE is applied before the SELECT is assembledHAVING is applied after the SELECT is assembled
This also means WHERE has a lot more influence on performance than HAVING, so using HAVING just so you can use aliases there instead of in the WHERE clauses is not a smart idea unless you verify in the query plan and query optimisation output of our DBMS this has no influence (some DBMS even allow you to see the results of query rewriting which you can use to verify if two queries really are equivalent from the DBMS perspective).
Since HAVING can be used without GROUP BY, many people work around the WHERE alias limitation. Given the above effects on performance, this is not a wise idea, despite the same end-results. See the example below that uses the [Wayback/Archive] MySQL :: Sakila Sample Database: customer table.
Luckily there has been enough other material explaining WHERE versus HAVING, so I can reference it from here, for instance (note note limited to MySQL/MariaDB) [Wayback/Archive] mysql – WHERE vs HAVING – Stack Overflow (thanks [Wayback/Archive] baloo and [Wayback/Archive] Fishdrowned):
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Posted in Conference Topics, Conferences, Database Development, Development, Event, MariaDB, MySQL, SQL, SQLite | Tagged: 1054, this | Leave a Comment »
The Wiert Corner - irregular stream of stuff 