Posted by jpluimers on 2018/07/11
[WayBack] QualityCentral 110308 – TDBEdit updates wrongly Datalink.Modified when Dataset being in Browse mode and [WayBack] QualityCentral 127300 – Closed Exception When Ctrl+A (select text) on TDBEdit have been partially fixed in Delphi 10.2 Tokyo under [RSP-16288] Bug after selecting all the text by pressing Ctrl+A in TDBEdit and pressing TAB – Embarcadero Technologies.
Since there is only manual syncing from Quality Portal to Quality Central, and only Quality Central is indexed by search engines, the public at large usually finds the Quality Central bugs.
Basically, the affected controls ([WayBack] TDBEdit, [WayBack] TDBComboBox, [WayBack] TDBMemo, but not [WayBack] TDBRichEdit – probably not needed as I could not reproduce the [WayBack] TClientDataSet based QC127300 attachment in Delphi 10.1 with TDBMemo or TDBRichEdit, though neither selected of these two all text, which 10.2 also fixes).
the .KeyPress methods now check for a Ctrl-A case like this:
^A:
begin
SelectAll;
Key := #0;
end;
and some of the .KeyDown methods have been tuned a little by setting Key := 0 when Edit returns false.
–jeroen
Posted in Delphi, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2018/07/11
When accessing the VCL from multiple threads at the same time: adopted from …\DEMOS\THREADS\THRDDEMO.DPR
Great question a while ago:
[WayBack] “Don’t access VCL from a background thread” – how to demo that? – Primož Gabrijelčič – Google+
For me, the ultimate way why not to access the VCL from a background thread is the precursor of the official threads demo that ships from Delphi 2 to Delphi XE6 in ...DEMOS\THREADS\THRDDEMO.DPR. where you’d think the thread isolation would be in ...DEMOS\THREADS\ThSort.pas but actually is in ...DEMOS\THREADS\SortThds.pas.
The first public showing of that demo did not include main thread protection. It originates from a session at the the 1995 Borland Developers Conference where Ray Konopka showed the below code from Bob Ainsbury.
That session reminded why this joke [WayBack] Via the EKON20 sessions… – Jeroen Wiert Pluimers – Google+ was so funny: “When Ray Konopka enters the room you have a Raize condition.“.
The question above also made me find back this reference to BorCon95 in San Diego:
Read the rest of this entry »
Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi 10.2 Tokyo (Godzilla), Delphi 2, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi 3, Delphi 4, Delphi 5, Delphi 6, Delphi 7, Delphi 8, Delphi x64, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | 2 Comments »
Posted by jpluimers on 2018/07/08
Via [WayBack] Artikel 13 (Uploadfilter) vs. Math – Math wins – Kristian Köhntopp – Google+:
Simulation of the proposed law effects are easy: [WayBack] Thread by @AlecMuffett: “Regards Article13, I wrote up a little command-line false-positive emulator; it tests 10 million events with a test (for copyrighted material) […]” #Article13
What it shows that an automated test for content-originality only succeeds when there are a truckload of copyrighted-material uploads than original-content uploads:
about 1 in 67 postings have to be “bad” in order to break even
So if you have less than 1% false uploads, even with a 98.5% accuracy (which is very very good for a take-down algorithm!), you will piss off far more good items wrongly marked as false positive, than bad items correctly marked bad.
When the accuracy gets less, you piss-off far more original-content uploads, but also catch less copyrighted-material uploads..
This is called the a far less “sexy” term False positive paradox – Wikipedia, which is a specialisation of the far mor dull sounding Base rate fallacy – Wikipedia
Source code: [WayBack] random-code-samples/falsepos.py at master · alecmuffett/random-code-samples · GitHub
Original thread:
[WayBack] Alec Muffett on Twitterさん: “Regards #Article13, I wrote up a little command-line false-positive emulator; it tests 10 million events with a test (for copyrighted material, abusive material, whatever) that is 99.5% accurate, with a rate of 1-in-10,000 items actually being bad.… https://t.co/CJvxdvkiom”
https://twitter.com/alecmuffett/status/1015594170424193024
and
[WayBack] next_ghost on Twitter: “And for the nerds who want to learn more, this is called a “False positive paradox”. https://t.co/CIvw2ni21q… “
–jeroen
Posted in Algorithms, Development, Software Development | 1 Comment »
Posted by jpluimers on 2018/07/06
Since Mediawiki needs an extension to display Markdown, and many MediaWiki installations do not have that extension, I was looking for an online conversion from markdown to MediaWiki markup.
Luckily the Pandoc try has this conversion: [WayBack] Try pandoc! Markdown(pandoc) -> MediaWiki
These links helped me get there:
–jeroen
Posted in *nix, *nix-tools, Development, Lightweight markup language, MarkDown, MediaWiki, pandoc document converter, Power User, Software Development | Leave a Comment »
Posted by jpluimers on 2018/07/05
Paul TOTH figured this out:
you can use any Linux API but it’s not trivial.
- you have to install the “dev” library under Llinux, like “apt-get install xxx-dev” for the xxx API
- you have to update the Linux DSK in Delphi
- you can declare the API as externals function as usual
- now you can compile and deploy the application.
If you miss the steps 1 or 2 you’ll have a linker error.
Source: [WayBack] Dear… Delphi 10.2 Tokyo, can i use linux api directly? like ‘fcntl(….)’.
And there is this great blog post that I found later by [WayBack] Allen Drennan: [WayBack] Importing third-party Linux libraries on Delphi 10.2 Tokyo – grijjy blog
–jeroen
Posted in Delphi, Delphi 10.2 Tokyo (Godzilla), Development, Software Development | Leave a Comment »
Posted by jpluimers on 2018/07/05
While updating some old code fiddling with the[WayBack] GetThreadId function, I wanted to have some TThread wrapper around it. I had totally forgotten there has been already a means for this since Delphi 2009 (which initially had a bug, but that was worked around at first and fixed later): [WayBack] CurrentThread.
The latest version of Delphi, Delphi 2009, has a CurrentThread class property on the TThread class.
This will return the proper Delphi thread object if it’s a native thread. If the thread is an “alien” thread, i.e. created using some other mechanism or on a callback from a third party thread, then it will create a wrapper thread around the thread handle.
20081001 at 5:00 – [WayBack] Barry Kelly
Sources
–jeroen
Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi 10.2 Tokyo (Godzilla), Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, QC, Software Development | Leave a Comment »
Posted by jpluimers on 2018/07/04
Since I forget where they hid the [WayBack] Visual Studio – Add File As Link feature, two images from the linked post:
- The icon in the link is different from the normal file:
- Adding as a link is not a separate menu item, but a modification of the file open dialog overlaying the default
Add button with two more options: Add; Add as Link (note Show Previous Versions is a feature of non-Home version of Windows Vista and up).
Do not double click the file name, as that will add (AND COPY TO THE CURRENT PROJECT DIRECTORY !!!1!!!) that file to your current project.
A step by step instruction is at [WayBack] c# – Add File as a Link on Visual Studio – Debug vs Publish – Stack Overflow.
–jeroen
Posted in .NET, Development, Software Development, Visual Studio and tools | Leave a Comment »
The Wiert Corner - irregular stream of stuff 