The Wiert Corner – irregular stream of stuff

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

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Archive for the ‘Delphi’ Category

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webcamoid/webcamoid: Webcamoid is a full featured and multiplatform webcam suite.

Posted by jpluimers on 2024/04/11

This is cool and works well (including the portable version) :[Wayback/Archive] webcamoid/webcamoid: Webcamoid is a full featured and multiplatform webcam suite.

Most code is C++ with bits using the QML language of the Qt cross platform UI library.

It reminded me of the Kylix days: the first Linux version of Delphi where the CLX GUI framework was a rework of VCL but based on Qt instead of Win32 GDI.

The downloads are at [Wayback/Archive] Webcamoid, The ultimate webcam suite! with installable and portable versions of 32-bit and 64-bit for Linux, Mac and Windows (I have tried the latter, see below why).

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Posted in C++, Delphi, Development, Kylix, kylix_rd, Qt, Software Development | Leave a Comment »

The Global Delphi Summit: June 13+14 in “Amsterdam” (actually the H20 venue in Purmerend)

Posted by jpluimers on 2024/03/15

Cool event – for me even relatively close (about 60 minutes driving) – [Wayback/Archive] The Global Delphi Summit taking place this year on June 13 and 14.

The speaker line-up is great as are their sessions. The main web-site pages are:

Via [Wayback/Archive] Delphi Summit 2024 – GDK Software

If you come from abroad, consider spending a few extra days. Purmerend has a nice old Dutch city center with roots going back as far as the 1100s. The map File:Waterland 1288.jpg – Wikimedia Commons shows it situated in between various lakes which in the 1600s all became land by pumping out the water and transforming them into polders. There are scenic routes over many of the dikes surrounding these polders.

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Posted in Conferences, Delphi, Delphi Summit, Development, Event, Software Development | Comments Off on The Global Delphi Summit: June 13+14 in “Amsterdam” (actually the H20 venue in Purmerend)

Oh boy, VB.NET and JavaScript both have a `with` keyword too!

Posted by jpluimers on 2024/03/05

Last year, within a week, I saw two tweets of languages that, like Pascal, have a with statement as well:

  1. [Archive.is] Shawn Wildermuth 💻☕🎸🎥🎮 on Twitter: “JavaScript’s Forgotten Keyword (with)”
  2. [Archive.is] John Kaster #BlackLivesMatter on Twitter: “@suited_aces @marcocantu @delphijunkie @JimMcKeeth @jpluimers I present “with”… “

The first points to an article that shows the JavaScript implementation of with is very similar to the Pascal one: [Wayback] JavaScript’s Forgotten Keyword (with) – DEV Community.

Just in case some of my readers do not know my opinion of the Pascal with statement  (it even has it’s own blog category), I really think you should not use it Delphi: you should avoid the with statement as it makes your code less future proof.

The reason not to use it is called [Wayback] Accidental Shadowing in computer language speak (it also can rear its head when you define variables at different block levels like for instance this golang example: [Wayback] Warning for accidental variable shadowing with block scope – Technical Discussion – Go Forum).

Even the JavaScript specification advises against using the with keyword in [Wayback] with – JavaScript | MDN

**Warning:**Use of the with statement is not recommended, as it may be the source of confusing bugs and compatibility issues. See the “Ambiguity Contra” paragraph in the “Description” section below for details.

There have been various proposals to extend the Delphi implementation of the with statement to make it more resilient to Accidental Shadowing by forcing the usage to be prepended by a . (dot) or alias, as for instance seen in [Wayback] Re: “with” Coders are Monsters – delphi / [Wayback] delphi • View topic • “with” Coders are Monsters:

This is in fact what the second twitter messages pointed to: a VB.NET example doing just that: prepend with a dot: [Wayback] Maarten Balliauw on Twitter: “Looks like using With makes it pretty clean!… “

I was not even aware that VB.NET had it, but it has: [Wayback] With…End With Statement – Visual Basic | Microsoft Docs

And it has similar debugging issues as with Delphi as per [Wayback] The VB.NET ‘With’ Statement – embrace or avoid? – Stack Overflow:

Find the beginning of a With statement and set a breakpoint. Step to the next line (so you’re hiding the first line right under the if block). Highlight it, then ‘Add Watch’. You should see this: ‘With’ contexts and statements are not valid in debug windows.

–jeroen

Posted in .NET, Delphi, Development, Go (golang), JavaScript/ECMAScript, Pascal, Scripting, Software Development, VB.NET, With statement | Leave a Comment »

In memory of Matthias Eißing (Embarcadero, formerly Borland/Inprise/Borland/CodeGear)

Posted by jpluimers on 2024/02/16

Earlier today, I got the sad news that my friend Matthias Eißing suddenly passed away in the night from Tuesday to Wednesday.

Valentines day will never be the same.

Rest in Peace dear Matthias Eißing. Hope you will virtually keep drinking beer and keep the great conversations that made you so many friends going.

🕯️

[Wayback/Archive] Eine sehr traurige Nachricht – Delphi-PRAXiS

Mit einer Mischung aus blankem Entsetzen und großer Trauer muss ich Euch leider mitteilen, dass unser langjähriges Community-Mitglied Matthias Eißing in der Nacht zu Mittwoch plötzlich und völlig unerwartet verstorben ist.

…

Helping others with is technical knowledge was what Matthias loved doing so much: in person (see [Wayback/Archive] Matthias Eißing – Entwickler Konferenz and [Wayback/Archive] Programm | EKON 27 – Die Entwickler Konferenz für Delphi & more), virtual (watch  [Wayback/Archive] Magdeburger Developer Days 2021 03.09.2021 – Matthias Eißing “Delphi Community Edition” – YouTube), individually (uncountable chat messages, phone and video calls, e-mails and in-company meetings), white papers / blog posts (like [Wayback/Archive] HighDPI Entwicklung unter Windows) and forum messages (just see the list at [Wayback/Archive] Delphi-PRAXiS – Ergebnis der Suchanfrage).

I had hoped to meet at EKON28 again, as our story goes back to the very first [Wayback/Archive] EKON – The Conference for Delphi & More in 1997 @ the Raunheim Astron Hotel Rhein-Main organised by Masoud Kamali ([Wayback/Archive] Massi Kamali (@MasoudMassi) / Twitter).

EKON was the first conference by Masoud/S&S. It and later conferences helped the Astron Hotels in the southern Frankfurter area (a few years Raunheim, Rüsselsheim and many years Mörfelden) grow a lot and it was the base were Matthias and a lot of other developers kept meeting up and started to know about each others personal lives as well.

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Posted in About, borland, Delphi, Development, History, Personal, Software Development | Leave a Comment »

Watching “Why is C# Evolving This Way?” strengthened my realisation that the Delphi 12 language by now is light years behind C# 12

Posted by jpluimers on 2023/12/07

Though after C# 4 (covariance and contravariance) and C# 5 (async/await) the evolvement of C# might have seemed to slow down a bit, the big picture hasn’t as shown in the [Wayback/Archive] Why is C# Evolving This Way? – YouTube video by Zoran Horvat which comes down to:

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Posted in .NET, C#, Delphi, Development, Software Development | 9 Comments »

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