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 ‘Development’ Category

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Crosscompiling with Lazarus 1.8 on Linux Mint 18.3 | The Programming Works

Posted by jpluimers on 2020/01/08

As I will likely need this one day: [Archive.is / WayBack] Crosscompiling with Lazarus 1.8 on Linux Mint 18.3 | The Programming Works.

There are quite a few one-time manual setups to initially set this up, but after that it’s a piece of cake.

via:

–jeroen

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Posted in Development, FreePascal, Lazarus, Pascal, Software Development | Leave a Comment »

Mads Kristensen on Twitter: “Visual Studio Tip: A blue dot in the margin indicates a switch of threads while stepping through debugging. #vstip… “

Posted by jpluimers on 2020/01/07

[WayBack] Mads Kristensen on Twitter: “Visual Studio Tip: A blue dot in the margin indicates a switch of threads while stepping through debugging. #vstip… “

–jeroen

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Posted in .NET, Development, Software Development, Visual Studio and tools | Leave a Comment »

Use PiServer to easily set up a network of client Raspberry Pi clients connected to a single x86-based server via Ethernet.

Posted by jpluimers on 2020/01/07

On my list of things to try:

PiServer is our new piece of software that makes it easy to create a network of Pis you can centrally control — ideal for your computing classroom or club!

Source: [WayBack] The Raspberry Pi PiServer tool – Raspberry Pi

Via: [WayBack] Use PiServer to easily set up a network of client Raspberry Pis connected to a single x86-based server via Ethernet. With PiServer, you don’t need SD card… – Raspberry Pi – Google+

–jeroen

Posted in Development, Hardware Development, Hardware Interfacing, Raspberry Pi | Leave a Comment »

VCL FadingEffect by Paul Toth at GitHub

Posted by jpluimers on 2020/01/07

In case I ever need a fading effect between 2 panels on one form, there is some code that will get me started.

I’d probably code it in a different design (without a global variable), but it works so can be a good source of ideas.

Source: Delphi/FadingEffect at master · tothpaul/Delphi · GitHub

Via: [WayBack] VCL Tiny demo of a Fading effect for Delphi Tokyo  – Paul TOTH – Google+

–jeroen

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Posted in Delphi, Development, Software Development | Leave a Comment »

Im memoriam: Rudy Velthuis

Posted by jpluimers on 2020/01/05

Given that I’m fighting rectal cancer and am extremely low on energy, I am keeping this much shorter than I want to.

Recently, I learned that Rudy Velthuis passed away on 2019-05-13. Born on 1960-10-30, he passed away at only age 58.

After asking permission from his family, I wrote a small im memoriam.

We frequently encountered each other on-line in the Delphi community, especially in the early days when I was way more active on forums, newsgroups and chat channels. He was famous there, with good reason.

Though colloquially known as [WayBack] “dentist with a strong interest in programming”, he was a great Delphi programmer and very well known for thoroughly documenting the many gaps that Embarcadero left in their documentation.

In 2009, Edwin van der Kraan and I had an opportunity to have dinner with Rudy. We met at his house, where we learned he not only ran a fully fledged dentistry practice, but also was married someone who origilally was from the Philippines. A truly happy couple they were.

In retrospect, I wish we had had met in real life more often, but I’m learning the hard way that life is finite giving you only so much time to do things.

I will remember Rudy because of his knowledge, wit and odd – but great – combination of work and interests.

In the mean time, I have asked a few archival organisations (including the WayBack machine) to archive his sites:

Some of his profiles that I archived on 20190103:

I love the “Kraftwerk – Autobahn” picture on his Stack Overflow profile page, so I included that song below the fold.

Related:

–jeroen

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Posted in About, Delphi, Development, History, Personal, Software Development | 4 Comments »

Brilliant device: iPazzPort Wireless Mini Handheld Keyboard with Touchpad Mouse Combo for Android TV Box and Raspberry Pi 3 and HTPC and XBMC KP-810-19S – Black: Computers & Accessories

Posted by jpluimers on 2020/01/03

Brilliant device: [WayBack] KP-810-19BTT Mini Bluetooth Keyboard with touchpad – Unisen Group iPazzPort

I got it via Amazon USA ([WayBack] iPazzPort Wireless Mini Handheld Keyboard with Touchpad Mouse Combo for Android TV Box and Raspberry Pi 3 and HTPC and XBMC KP-810-19S – Black: Computers & Accessories), but Amazon in Europe has it as well (this is the German link:[Archive.is] iPazzPort Mini Wireless Handheld Tastatur mit Touchpad: AmazonSmile: Computer & Zubehör; replace .de with .fr, .co.uk, to find your local link).

There are this one is 2.4 Ghz, includes a USB dongle in the battery compartment and requires 2 AAA batteries.

There are Bluetooth and back-lit versions too which cost slightly more.

Via: [WayBack] Raspberry Pi Cluster – Software Team Lead

–jeroen

Posted in Development, Hardware Interfacing, Keyboards and Keyboard Shortcuts, Power User, USB | Leave a Comment »

elektronica-shop.nl :Montagedraad.html

Posted by jpluimers on 2020/01/03

The cool thing about elektronica-shop.nl is that they have [WayBack] Montagedraad in various colours for most diameters:

A short list:

  • 0.14 mm2: rood/bruin/blauw/groen/geel/oranje/zwart/wit/grijs
  • 0.20 mm2: zwart/bruin/rood/oranje/geel/groen/blauw/paars/grijs/wit
  • 0.75 mm2: blauw/bruin/groen-geel/grijs/oranje/wit/violet(paars)/zwart/rood/geel/groen
  • 1.00 mm2: zwart/rood
  • 1.50 mm2: zwart/rood/blauw/bruin/groen-geel
  • 2.50 mm2: zwart/rood
  • 4.00 mm2: zwart/rood
  • 6.00 mm2: zwart/rood

Translations:

  • rood = red
  • bruin = brown
  • blauw = blue
  • groen = green
  • geel = yellow
  • oranje = orange
  • zwart = black
  • wit = white
  • grijs = grey/gray
  • paars = purple
  • violet = violet
  • groen-geel = green-yellow striped

The maximum current (Amperage) depend on the area through which the current can flow. It can be roughly translated from the AWG (American Wire Gauge). See the table below.

De AWG-code wordt met name in de elektrotechniek om de dikte van elektrische geleiders en de toebehoren daarvan, zoals adereindhulzen, kabelschoenen en -klemmen, aan te duiden.

AWG  -  mm²    -  mm

4   -  21       -   5.2
6   -  13       -   4.1
8   -    8       -   3.2
10   -    6       -   2.6
12   -    4       -   2
14   -    2.5    -   1.6
16   -    1.5    -   1.3
18   -    1       -   1
20   -    0.5    -   0.8
22   -    0.3    -   0.65
24   -    0.2    -   0.5
26   -    0.13  -   0.4
28   -    0.08  -   0.32
30   -    0.05  -   0.25

Posted in Development, Hardware Development, LifeHacker, Power User | Leave a Comment »

python – Why does “return list.sort()” return None, not the list? – Stack Overflow

Posted by jpluimers on 2020/01/02

list.sort sorts the list in place, i.e. it doesn’t return a new list. Just write

newList.sort()
return newList

The above answer is goden as performing return list.sort() bytes me often, because Python is usually an environment using the functional approach.

Answer from [WayBack] python – Why does “return list.sort()” return None, not the list? – Stack Overflow

Background information:

–jeroen

Posted in Development, Python, Scripting, Software Development | Leave a Comment »

Delphi Programming Blog (by Shaun Roselt): Delphi Communties on: WhatsApp, Telegram, Google+, Facebook

Posted by jpluimers on 2020/01/02

From a while ago by a young (then ~18, now around ~20) enthusiastic Delphi programmer: [WayBack] Delphi Programming Blog (by Shaun Roselt): Delphi Communties on: WhatsApp, Telegram, Google+, Facebook

He has an interesting YouTube channel too: https://www.youtube.com/user/shaunroselt/videos

–jeroen

Via: [WayBack] More Delphi communities! – Ilya S – Google+

 

Posted in Delphi, Development, Software Development | Leave a Comment »

GitHub – Libaud/POLCLVCLISO: Pascal Object LCL and VCL ISO standards implementation for CodeTyphon, Delphi, Lazarus

Posted by jpluimers on 2020/01/02

For my link archive: GitHub – Libaud/POLCLVCLISO: Pascal Object LCL and VCL ISO standards implementation for CodeTyphon, Delphi, Lazarus

It implements these standards:

  • ISO standard 3166-1, 3166-2, 3166-3 implementation
    • (all part of the ISO 3166 – Wikipedia that “defines codes for the names of countries, dependent territories, special areas of geographical interest, and their principal subdivisions)”
  • ISO standard 4217 implementation
    • ISO 4217 – Wikipedia  “delineates currency designators, country codes (alpha and numeric)” where the country codes are the same as in ISO 3166
  • ITU E.164 standard implementation
    • E.164 – Wikipedia “E.164 defines a general format for international telephone numbers. Plan-conforming numbers are limited to a maximum of 15 digits, excluding the international call prefix.”

A library like this needs monitoring the standards changes, so hopefully Libaud will do that.

Some of my posts related to ISO 3166 are below.

–jeroen

Related:

 

Posted in Delphi, Development, FreePascal, Lazarus, Pascal, Software Development | Leave a Comment »

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