Posted by jpluimers on 2016/12/27
A long while ago, but still an interesting discussion: Is there a predictable order of execution for Class Constructors? leading to these links:
–jeroen
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Posted by jpluimers on 2016/12/21
Some of the [Wayback] Ken Thompson – Wikiquote entries come from a great [Wayback] 1983 ACM Turing Award Acceptance Lecture [Wayback] “Reflections on Trusting Trust”.
That lecture used to be on http://cm.bell-labs.com/who/ken/trust.html
But it isn’t, and was not in the WayBack machine and neither in the Google Cache [Archive.is] because of the [Wayback/Archive.is] robots.txt. Historic link rot galore!
Edit 20210728: by now it is in the Wayback machine again; the earliest archived copy is from 2001, it also shows that as of april 2015 it is gone from the bell labs server.
The lecture is about [Wayback] compiler viruses and viruses actually did this at least a few times: Wayback: Delphi in 2009 and to [Wayback] XCode in 2015.
A few nice links from [Wayback] ACM Classic: Reflections on Trusting Trust – Google Groups though:
And archived versions of (I hope accurate) copies of the article:
Finally I found a PDF copy of the original ACM prints that Greg Ganger of Electrical and Computer Engineering at Carnegie Mellon University has online. It’s archived too.
–jeroen
Further reading:
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Posted by jpluimers on 2016/12/07
In the continued “floating point code is hard for most software developers” series:
[WayBack] Why does the Windows calculator generate tiny errors when calculating the square root of a perfect square? – The Old New Thing
Because it doesn’t know that it’s a perfect square.
–jeroen
Posted in Algorithms, Conference Topics, Conferences, Development, Event, Floating point handling, Software Development, The Old New Thing, Windows Development | Leave a Comment »
Posted by jpluimers on 2016/11/11
When Ray Konopka enters the room you have a Raize condition.
Via the EKON20 sessions, it made its way into the workshop If you thought you could do multi-threading, then play “The Deadlock Empire” games – Entwickler Konferenz
–jeroen
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Posted by jpluimers on 2016/11/03
My EKON20 link archive so I can refer to it through web.archive.org:
–jeroen
Posted in Conferences, Delphi, Development, EKON, Event, Software Development | Leave a Comment »
Posted by jpluimers on 2016/11/01
Next Monday-Wednesday (7th till 9th of November) will the the 20th edition of the famous Delphi related EKON conference and post-conference workshops at the Hotel Meliá Düsseldorf.
It will be a blast, not the least because it’s an anniversary.
There are still a few spots left, so drop me a note if you’ve not reserved yet as I can get you a discount code.
Below is the the speaker line up. It’s an awesome bunch of guys and there’s plenty coverage for English speaking attendees: English sessions are below the speaker list.
Posted in Conferences, Delphi, Development, EKON, Event, Software Development | 1 Comment »
Posted by jpluimers on 2016/09/30
There are odd things with the InitialKeyboardIndicators registry setting. Technet only documents bitflag value 2.
According to the docs it should be a bitflag, but sometimes you encounter InitialKeyboardIndicators value 2147483648 (0x80000000) especially as part of the .DEFAULT profile at HKEY_USERS\.DEFAULT\Control Panel\Keyboard.
The problem I had was having these symptoms:
InitialKeyboardIndicators=0 in my local profile at HKEY_CURRENT_USER\Control Panel\Keyboard.After reading Num Lock problem: Strange number in InitialKeyboardIndicators in Registry, I set both values to 0.
Now that it is 0 in both at HKEY_USERS\.DEFAULT\Control Panel\Keyboard and HKEY_CURRENT_USER\Control Panel\Keyboard, symptoms 4-5 still hold. Strange.
It is not the same problem as Num Lock state not retained after resume from Hybrid Shutdown in Windows 8 and Windows Server 2012.
If it persist, I might just put a script in: [Partially Solved: re-wired keyboard lol] Registry key “InitialKeyboardIndicators” NEVER keeps NumLock ON + ScrollLock ON (6) at startup and reverts back to NumLock ON (2).
–jeroen
Posted in Conference Topics, Conferences, Event, Keyboards and Keyboard Shortcuts, KVM keyboard/video/mouse, Power User, ThinkPad, UltraNav keyboards, Windows | Leave a Comment »
Posted by jpluimers on 2016/09/12
Happy debugging, suckers
Or maybe not…
(yes, this year it’s not on the 13th of September, but the 12th, guess why…)
--jeroen
via: Day of the Programmer – Wikipedia, the free encyclopedia
PS: The oldest reference I could find for define true (rand() > 10) was this one from 20121014:
// Happy debugging, suckers
# define true (rand() > 10)Source: codecrap.com – snippet #6
It reminds me of a 1990s prank I once put in central consts unit of a Turbo Pascal project somewhere way beyond the right margin in a search directory outside of version control:
const True = False; False = not True;
A lot more pranks are at Happy debugging, suckers : ProgrammerHumor – reddit
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Posted by jpluimers on 2016/07/27
It comes down to these cases for XML elements having maxOccurs="1" (which the default for maxOccurs):
nillable="true" will convert from a regular type to a nullable type.minOccurs="0" will add boolean …Specified properties in the generated C# for each element.nillable="true" and minOccurs="0" in an element which gets you a nullable type and a …Specified property.Note I’m not considering
fixedordefaulthere, norattributes(that haveuseinstead ofminOccurs/maxOccurs, but do not allow for nillable) nor larger values ofmaxOccurs(which both xsd.exe and xsd2code regard asunbounded).
From the above, XML has a richer type system than C#, so in XML there are subtle a differences between:
nil in the XML elementHopefully later more text and examples to show how to actually work with this.
Delphi related to minOccurs:
Note that xsd2code.codeplex.com (unlike XmlGen#) has at least two forks at github:
From the specs:
–jeroen
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Posted by jpluimers on 2016/07/19
There is a little trick to disable “Known IDE Packages”: you can stop Delphi from loading one by either making “Value data” of the registry blank, or prepending it with an underscore:
packages that might have been disabled, by checking any string entries where the data has been pre-pended with an underscore OR is blank
[WayBack] Access violation at address 00000000 read of address 00000000, when starting the IDE or opening a project after installing the updates
I’ve pre-pended underscores to some packages in the registry key [HKEY_CURRENT_USER\Software\Borland|Codegear|Embarcadero\BDS|Delphi\#.0\Known IDE Packages] and intend to keep the list below updated over time.
Note that you have to prepend the description with an underscore: it is not sufficient to add these to
[HKEY_CURRENT_USER\Software\Borland|Codegear|Embarcadero\BDS\#.0\Disabled Packages].Empirically, the
Disabled Packagesseem to work only for packages starting withdclin their filename.
Posted in Castalia, Conference Topics, Conferences, Delphi, Delphi XE8, Development, Event, Keyboards and Keyboard Shortcuts, Power User, Software Development | 5 Comments »
The Wiert Corner - irregular stream of stuff 