The Wiert Corner – irregular stream of stuff

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

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Always a good idea to run firewalled

Posted by jpluimers on 2017/08/09

I just tried to quit Delphi when Refactor Rename screwed up again:

—jeroen

Posted in Delphi, Delphi XE8, Development, Software Development | Leave a Comment »

DELL 9200 blinking orange power button LED

Posted by jpluimers on 2017/08/09

I had distributed my DELL 9200 machines over some family and friends.

After 10+ years, one of them was showing the [Wayback/Archive.is] “blinking orange” power button LED. Usually this means a power supply issue and in this case [Wayback] these are tower machines compatible with a regular ATX power supply.

So the fix was a basic power supply exchange like mentioned here:

Note: if you have steady orange power button LED blinking, then you need to check the main-board capacitors as this video below shows.

–jeroen

Read the rest of this entry »

Posted in DELL-9200, Hardware, Power User | Leave a Comment »

Software Design Patterns Are Not Goals, They Are Tools

Posted by jpluimers on 2017/08/09

From a while ago: Software design patterns are tools, not goals. Use them as such, and only when you actually need them, not before.

Recommended reading!

via: Oh, hell yeah – Richard Haven – Google+

–jeroen

 

Posted in Design Patterns, Development, Software Development | Leave a Comment »

Sorting visualised with traditional folk dancing

Posted by jpluimers on 2017/08/08

Some really cool YouTube videos below nicely visualise different sorting algorithms are in the playlist below.

They are an extension of https://www.youtube.com/user/AlgoRythmics/videos

It impressed me more than the audible playlist I wrote about in Fun to watch/listen to: Sorting Algorithms (slower, grouped and ordered) – YouTube, likely because the various steps in each sorting algorithm are much more clear.

To me it’s also more entertaining than Sorting | Visual.ly, even though the latter even more clearly show the various operations in a sorting algorithm.

Not all algorithms are covered; https://www.toptal.com/developers/sorting-algorithms/ has many more of them and to my surprise, Heap Sort beats Quick and Quick3 sort on various distributions.

Discussing sorting seems a never ending story…

–jeroen

via: [WayBack] Best description of Bubblesort i’ve ever seen °.° – Fabian S. Biehn – Google+

Read the rest of this entry »

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

Some git links that helped me

Posted by jpluimers on 2017/08/08

For my link archive:

–jeroen

Posted in Development, DVCS - Distributed Version Control, git, Software Development, Source Code Management | Leave a Comment »

If you ever wonder why you get no (or incomplete) RTTI from a control that you…

Posted by jpluimers on 2017/08/08

Thanks Stefan Glienke for posting this a while ago:

If you ever wonder why you get no (or incomplete) RTTI from a control that you inherited from a DevExpress one – then look into cxVer.inc where it has the following lines:

{$IFNDEF CXTEST}
{$WEAKLINKRTTI ON}
{$RTTI EXPLICIT METHODS([]) FIELDS([]) PROPERTIES([])}
{$ENDIF}

+Martin Wienold was wondering (and so was I at first) why he could not properly resolve a form from the DI container that inherited from TdxRibbonForm despite writing a public method with [Inject] attribute on it but it was never called.

Warning: If you are using DevExpress or any other source code that does this (changing the $RTTI directive) and build these sources together with your application (in contrast to using precompiled dcus or even packages) on a version <XE6 then you might suffer from this issue: [WayBack] #79943: {$ RTTI} flag scope which causes RTTI to disappear even from units that did not have the $RTTI in them.

Source: If you ever wonder why you get no (or incomplete) RTTI from a control that you…

 –jeroen

Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi 2009, Delphi 2010, Delphi x64, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, QC, Software Development | Leave a Comment »

Photographer captures Miami Beach air show with Nikon 800mm and custom rig

Posted by jpluimers on 2017/08/07

Cool pictures and ditto rig via:

–jeroen

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

ssl/ssh multiplexer

Posted by jpluimers on 2017/08/07

sslh accepts connections on specified ports, and forwards them further based on tests performed on the first data packet sent by the remote client.

Probes for HTTP, SSL, SSH, OpenVPN, tinc, XMPP are implemented, and any other protocol that can be tested using a regular expression, can be recognised. A typical use case is to allow serving several services on port 443 (e.g. to connect to ssh from inside a corporate firewall, which almost never block port 443) while still serving HTTPS on that port.

Hence sslh acts as a protocol demultiplexer, or a switchboard. Its name comes from its original function to serve SSH and HTTPS on the same port.

sslh supports IPv6, privilege dropping, transparent proxying, and more.

Interesting…

–jeroen

Posted in *nix, https, Linux, OpenSSL, OpenVPN, Power User, Security | Leave a Comment »

sleep wake – Macbook Air – battery drains while sleeping (but not when shut down) – via: Ask Different

Posted by jpluimers on 2017/08/07

I had the same issue as in sleep wake – Macbook Air – battery drains while sleeping (but not when shut down) – Ask Different which suddenly introduced itself in April 2016 after I had been running El Capitan (OS X 10.11) for a while.

The Mac didn’t have PowerNap active as I verified using How Power Nap works on your Mac – Apple Support

At first it looked like an SMC reset worked as explained by Reset the System Management Controller (SMC) on your Mac – Apple Support and mentioned in Mac Air loses 90% of battery overnight when in … | Apple Support Communities.

The Mac is indeed running Chrome, but I don’t like to turn that off before sleeping.

Executing pmset -g would show hibernatemode 3.

So I opted for the hibernate option as mentioned in the first link:

sudo pmset -a hibernatemode 25

This will take a bit longer to restore the memory from hibernate state, but saves a lot of frustration.

–jeroen

Posted in Apple, Mac, MacBook, MacBook-Air, Power User | Leave a Comment »

Vier 3d-printers van ongeveer 300 euro – Conclusie – Round-up – Tweakers

Posted by jpluimers on 2017/08/05

Eerder dit jaar testen we 3d-printers die voor minder dan 1000 euro te koop zijn. Het kan echter nog goedkoper. Dit keer testen we vier 3d-printers die ongeveer 300 euro kosten.

Source:[WayBack]  Vier 3d-printers van ongeveer 300 euro – Conclusie – Round-up – Tweakers

Posted in 3D printing, Development, Hardware Development, Power User | Leave a Comment »

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