The Wiert Corner – irregular stream of stuff

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

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Video Conversion done right: Codecs and Software – Super User Blog

Posted by jpluimers on 2018/10/08

From a very long time ago, but still a great references: [WayBack] Video Conversion done right: Codecs and Software – Super User Blog.

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Posted in Audio, ffmpeg, Media, Power User, Video | Leave a Comment »

Seven Steps to the Diagnosis of NSAIDs Hypersensitivity: How to Apply a New Classification in Real Practice?

Posted by jpluimers on 2018/10/08

For Ibuprofen, I have type B, but need to figure out how severe and which subcategory then find out if I’m also affected by other NSAIDs.

[WayBack] Seven Steps to the Diagnosis of NSAIDs Hypersensitivity: How to Apply a New Classification in Real Practice?

Tables and figures:

Via: [WayBack] 李麟 – Google+ commenting at [WayBack] This shirt on one of my fellow archers today… “Sons of Ibuprofen” – Lars Fosdal – Google+

–jeroen

Posted in About, LifeHacker, Personal, Power User | Leave a Comment »

Why Youtube’s algorithms push extreme content on every possible subject / Boing Boing

Posted by jpluimers on 2018/10/05

Food for thought: [WayBack] Why Youtube’s algorithms push extreme content on every possible subject / Boing Boing.

the problems of Youtube’s recommender algorithms might be that they overdistil your preferences. Since they’re aiming for “engagement” — a word I am beginning to loathe with an unsettling level of emotion — the real problem with these algorithms is they’re constantly aiming to create an epic sense of drama and newness

More in depth at [WayBack] Opinion | YouTube, the Great Radicalizer – The New York Times

Via [WayBack] Kristian Köhntopp – Google+.

–jeroen

Posted in Power User, SocialMedia, YouTube | Leave a Comment »

macOS / OS X / Mac OS X: excessive sysmond or mds CPU usage – via Ask Different and osXdaily

Posted by jpluimers on 2018/10/05

If you suffer from [WayBack] macos – Excessive CPU usage from sysmond – Ask Different, then it could be Activity Monitor itself using that CPU.

If you suffer from high CPU usage in mds, then it is likely the Spotlight search indexer acting up: [WayBack] mds – what MDS process is and why it uses CPU on the Mac

–jeroen

Posted in Apple, Mac, Mac OS X / OS X / MacOS, Power User, SpotLight | Leave a Comment »

Raspberry Pi as CD changer in pre 09/2002 E46 BMW 320i touring

Posted by jpluimers on 2018/10/05

My pre 09/2002 E46 BMW 320i touring didn’t come with a CD-changer, and since the Business CD head-unit didn’t support the regular AUX mechanisms (see links further below), I’m researching how to add a Raspberry Pi as CD-changer.

A few things I want to accomplish:

  • Raspberry Pi powers up as it has ignition signal
  • Raspberry Pi powers down soon after it has lost ignition signal
  • Connected via the CD-changer connectors (iBus and audio) in the back

Some links:

Supplying power:

iBus/kBus/CanBUS:

If the model was more recent, it would at least support AUX, but it doesn’t by default and the work-arounds seem to emulate a CD-changer after all:

Read the rest of this entry »

Posted in cars, E46 320i touring, LifeHacker, Power User | Leave a Comment »

Syncthing – on my research list

Posted by jpluimers on 2018/10/05

On my research list:

Syncthing replaces proprietary sync and cloud services with something open, trustworthy and decentralized.

[WayBack] Syncthing

Though it’s ont easy to get right: [WayBack] SyncThing for Android – twm’s blog

which references:

Via: [WayBack] I blogged about SyncThing before, when BitTorrentSync started to annoy the hell out of me. SyncThing is an open source tool for synchronizing directory trees between different devices without requiring a cloud service (it needs a discovery server though… – Thomas Mueller (dummzeuch) – Google+

–jeroen

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Posted in Cloud, Infrastructure, Power User | Leave a Comment »

To help understanding combinations of boolean operators: Truth table – Wikipedia

Posted by jpluimers on 2018/10/04

Most software developers know they exist, but some (including me) find them hard to visualise, especially for combinations of operators, or for less common operators: the Truth table – Wikipedia.

The common operators that everyone seems to understand are these:

  • logical true
  • logical false
  • logical negation
  • logical and
  • logical or
  • logical xor

It becomes harder with a series of combinations, for instance series of and (not ...) and (not ...) and (not ...) – not to be confused with nand, similarly or (not ...) or (not ...) or (not ...) – not to be confused with nor, which both can be transformed according to the De Morgan’s laws – Wikipedia:

In set theory and Boolean algebra, these are written formally as

{\displaystyle {\begin{aligned}{\overline {A\cup B}}&={\overline {A}}\cap {\overline {B}},\\{\overline {A\cap B}}&={\overline {A}}\cup {\overline {B}},\end{aligned}}}

Using truth tables

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Posted in Algorithms, Conference Topics, Conferences, Development, Event, Software Development | 2 Comments »

What’s the point of having abstract classes in Delphi? 

Posted by jpluimers on 2018/10/04

There was an interesting thread a while ago: [WayBack] What’s the point of having abstract classes in Delphi? – Agustin Ortu – Google+

The answer is none (the documentation warns you against it – see Constructing instance of abstract class –  the compiler doesn’t), so Stefan Glienke submitted this bug: RSP-10235: No warning for .Create on class declared as TClass = class abstract

This post is a reminder to myself to see if any progress has been made by the compiler engineers.

–jeroen

Posted in Delphi, Development, Software Development | 9 Comments »

Raspberry Pi Power Limitations – Raspberry Pi Stack Exchange

Posted by jpluimers on 2018/10/04

There are very many, often contradictory, claims about the power requirements and limitations of the Pi. What are the exact requirements?

has a very elaborate answer at [WayBack] Raspberry Pi Power Limitations – Raspberry Pi Stack Exchange covering all non-zero models.

I’ve archived some of the links it points to:

And some links on how to power a Raspberry Pi when you only have a 12V power source:

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

Fred Hebert on Twitter : “honest programming books… “

Posted by jpluimers on 2018/10/03

[WayBack] Fred Hebert on Twitter : “honest programming books… “:

  • The CVE Programming Language; ANSI C; Second Edition
  • The Rust Programming Language; The C++ that Feels Like Haskell (this book cannot be borrowed)
  • Librertarian Programming; The Ideology Behind Heartbleed, by a Racist Misogynist Taken Seriously; Revised and Expanded; I don’t think the cops in that video hated anybody. They were just doing their job. And their job included strangling a man to death for having sold untaxed cigarettes.
  • The Go Fuck Yourself Language
  • Continuous Integration; Pushing Retry Until Flaky Test Pass and the Build Succeeds

More images at [WayBack] Thread by @mononcqc: “honest programming books more honest books (including my own) […]”.

  • Please Use my Language; A Beginner’s Guide

  • Again: Please Use my Language

–jeroen

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Posted in Development, Fun, Quotes, Software Development | Leave a Comment »

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