The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

  • My badges

  • Twitter Updates

  • My Flickr Stream

  • Pages

  • All categories

  • Enter your email address to subscribe to this blog and receive notifications of new posts by email.

    Join 1,861 other subscribers

Archive for the ‘Conferences’ Category

Trip down memory lane: book on p-Code based UCSD Pascal

Posted by jpluimers on 2025/05/06

Last week I wrote on File scoped namespaces – C# 10.0 draft specifications | Microsoft Learn, promising to write more on p-Code and UCSD Pascal. That’s now (:

I started with [Wayback/Archive] “java byte code” “ucsd” “p-code” – Google Search as I was looking for really old material on this (Java 1.0 versions became available in the 1994-1995 time frame, and a lot of material back then either did not make it to the World Wide Web (which slowly gained popularity around that time, see History of the World Wide Web) or has vanished due to link rot.

The cool thing is that many “new” people are not even aware of p-Code, as the 2019 thread [Wayback/Archive] What do you think about something like Pascal bytecode? shows.

I learned a thing or two from it as well, for instance that there has been a “recent” book on UCSD Pascal:

Read the rest of this entry »

Posted in Apple Pascal, Conference Topics, Conferences, Development, DVCS - Distributed Version Control, Event, gist, GitHub, History, Internet, link rot, Pascal, Power User, Software Development, Source Code Management, Standard Pascal, Turbo Pascal, UCSD Pascal, WWW - the World Wide Web of information | Leave a Comment »

Some posts on example domains and example IP-ranges (IPv4 and IPv6)

Posted by jpluimers on 2025/05/05

Here are some of my blog posts on documenting using example domains and example IP-addresses or IP-ranges:

(I really wish that example.org and others would service SMTP with blackhole routing so one can also use it for bogus email addresses in documentation)

The blog posts above were incomplete (IPv6 was missing; IPv4 was not explained), so below are more links that do a better job based on a Tweet from [Wayback/Archive] Julia Evans (@b0rk).

Read the rest of this entry »

Posted in Conference Topics, Conferences, Development, DNS, documentation, Event, Infrastructure, Internet, IPv4, IPv6, Power User, Software Development | Leave a Comment »

Some SQLite things I recently learned a while ago

Posted by jpluimers on 2025/04/30

More on the reason why I learned a few SQLite things soon, but for my link and documentation archive, below is what I learned.

Most commands use the database file C:\temp\History which has no extension as that is how I got the file in the first place (spoiler: it’s a Chrome browser History from one of my user profiles).

Let’s get started:

Read the rest of this entry »

Posted in *nix, *nix-tools, bash, CommandLine, Conference Topics, Conferences, Console (command prompt window), Database Development, Development, Event, Power User, PowerShell, PowerShell, Software Development, SQL, SQLite | Leave a Comment »

Finding most recent forks of gists and github repositories

Posted by jpluimers on 2025/04/24

A while ago I found out that gist.github.com/lynatan/673e574faa8343fa01d7a91e75065c54 which I mentioned before in Delphi analog to C# ?? null-coalescing operator and Light Table like debugger evaluation and I wanted to

  1. find it back
  2. find the most recent forks of it

The reason was that I was working on the [WaybackSave/Archive] bit Time Professionals on X: “Live now: “Hidden Gems of Delphi Language: Operator Overloading and Class/Record helpers” @jpluimers” session which I presented at [Wayback/Archive] ITDevCon 2024 | Home where I also could enjoy the company of the other [Wayback/Archive] ITDevCon 2024 | Speakers and the famous [Wayback/Archive] IT DevCon 2024 speaker dinner (which attendees can also join for a slight surcharge).

The presentation is at [Wayback/Archive] ITDevCon2024/delphi_language_hidden_gems/delphi_language_hidden_gems.md at main · jpluimers/ITDevCon2024 · GitHub and pictures of the event at [Wayback/Archive] ITDevCon2024 – Google Photos.

Back to the problem at hand

Read the rest of this entry »

Posted in Conference Topics, Conferences, Delphi, Development, DVCS - Distributed Version Control, Event, gist, GitHub, ITDevCon, Software Development, Source Code Management | Leave a Comment »

Rephrasing error messages into heulpful messages

Posted by jpluimers on 2025/04/15

The problem with error messages is that they just displays errors as a fact without providing the user of future steps.

Offer them with a helpful, actionable message instead.

Not just for people with a visual impairment, I added readable text to the image below.

Read the rest of this entry »

Posted in accessibility (a11y), Conference Topics, Conferences, Development, Event, Software Development, Usability, User Experience (ux) | Tagged: | Leave a Comment »

Tribal Knowledge? Getting the public keys from github and gitlab users from their username

Posted by jpluimers on 2025/04/03

Learned a while ago: if you have the username from a GitHub or GitLab user, you can download interesting that sometimes can make life easier (but not necessarily more secure):

  • github.com/username.keys gives you their public SSH keys
  • gitlab.com/username.keys gives you their public SSH keys
  • github.com/username.png gives you their profile image

And that there are tools like gh, glab and age that can make direct use of them.

I love Twitter, so thanks for these for teaching me these little tricks:

Read the rest of this entry »

Posted in *nix, *nix-tools, ArchiveTeamWarrior, Conference Topics, Conferences, Development, Event, GitHub, GitLab, Internet, InternetArchive, OpenSSH, Power User, Software Development, Source Code Management, SSH, ssh/sshd, WayBack machine | Tagged: , | Leave a Comment »

Some notes on recursive lambda expressions in case I ever want to try this myself (spoilers: a lot of study time ahead; many of these links are not live any more)

Posted by jpluimers on 2025/03/20

A sidestep of the series around Writing a tool that restarts the Google Chat desktop app Window (and hopefully the Google Duo desktop app Window too):

Enumerating Windows and especially Child Windows is a recursive endeavour, so I wondered if it was possible to write a self referencing delegate, anonymous method or lambda in C#.

That turns out to be way more complicated than I hoped for.

Some notes below, as:

  • one day I might want to rewrite the core to use this technique just for learning purposes
  • finding these links was quite a bit harder than expected due to link rot often caused by missing redirects (especially on the Microsoft blog sites: for one as not all their blog members are still with them which means content got ditched, and also because they moved through a couple of blog platforms so the really old links to not redirect, not even while tracking them through the Wayback Machine, or the content is incomplete which is why all below links are both in the Wayback Machine and Archive.is)

Here we go:

Read the rest of this entry »

Posted in .NET, C#, Conference Topics, Conferences, Development, Event, Software Development | Tagged: , , , | Leave a Comment »

Laurensvanrun/Delphi-Promises: Delphi implementation of promises for asynchronous programming.

Posted by jpluimers on 2025/03/19

On my research list after making this short note April 2024: [Wayback/Archive] GitHub – Laurensvanrun/Delphi-Promises: Delphi implementation of promises for asynchronous programming.

My first impression is that this might be on the same level of usefulness and influention as these two:

Notes:

Read the rest of this entry »

Posted in Conference Topics, Conferences, Delphi, Development, EKON, Event, ITDevCon, Software Development | Tagged: , | Leave a Comment »

Writing a tool that restarts the Google Chat desktop app Window (and hopefully the Google Duo desktop app Window too) and some EnumWindows/EnumChildWindows tricks

Posted by jpluimers on 2025/03/19

Earlier this months I wrote Writing a tool that restarts the Google Chat desktop app Window (and hopefully the Google Duo desktop app Window too) promising I would rewrite the Delphi code into C# and integrate it into PowerShell.

This is the beginning on porting the basics of the Delphi code (which had a flaw!) to C# and contains EnumWindows/EnumChildWindows and error handling tricks and tips.

Read the rest of this entry »

Posted in .NET, C#, Conference Topics, Conferences, Delphi, Development, Event, PowerShell, Scripting, Software Development, __Unfinished | Tagged: , , | Leave a Comment »

Forrest Brazeal on Twitter about their your process for learning a new technology or framework on the job

Posted by jpluimers on 2025/03/03

Interesting responses to [Wayback/Archive] Forrest Brazeal on Twitter: “People who’ve been software engineers for awhile: what’s your process for learning a new technology or framework on the job? (I want the beginners who follow me to read the replies carefully)”.

Not just interesting for beginners to read, but for any developer: understanding how other people acquire new technology helps you to compare your own way of learning to others.

Forrest keeps these simple steps as “[Wayback/Archive] For me:

Read the rest of this entry »

Posted in Conference Topics, Conferences, Development, Event, Learning/Teaching, LifeHacker, Power User, Software Development | Leave a Comment »