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 ‘Software Development’ Category

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IoT & Smart Location of Things – Google Maps, Google Cloud

Posted by jpluimers on 2018/07/10

#IoT + Google Maps Geocoding API

Convert between addresses & geographic coordinates to determine the location of devices relative to known addresses https://goo.gl/BfwYTF

Edit 202400819: the Googl link above will die, and the link it pointed to (enterprise.google.com/maps/iot) back then pointed to [Wayback/Archive] IoT & Smart Location of Things – Google Maps, Google Cloud.

Source: [WayBack] IoT & Smart Location of Things – Google Maps, Google Cloud

Via: [WayBack] Google Maps API – Google+

--jeroen

Posted in Development, IoT Internet of Things, LoRa - Long Range wireless communications network, Network-and-equipment, Power User, Software Development | Leave a Comment »

Automated “take-down” algorithm simulation: 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

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 »

Online markup conversion from markdown to mediawiki: pandoc

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 »

listview – TListView detecting ESC or unchanged editing – Stack Overflow

Posted by jpluimers on 2018/07/05

Delphi translation by Thomas Mueller of a C++ Builder fix [WayBack] listview – TListView detecting ESC or unchanged editing – Stack Overflow

Via [WayBack] TListView detecting ESC or unchanged editing – Thomas Mueller (dummzeuch) – Google+

–jeroen

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

You can use Linux API calls directly from Delphi 10.2 and up

Posted by jpluimers on 2018/07/05

Paul TOTH figured this out:

you can use any Linux API but it’s not trivial.

  1. you have to install the “dev” library under Llinux, like “apt-get install xxx-dev” for the xxx API
  2. you have to update the Linux DSK in Delphi
  3. you can declare the API as externals function as usual
  4. 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 »

I totally forgot that Delphi has had a function to get the current executing thread – Stack Overflow

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 »

Visual Studio – Add File As Link

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:

  1. The icon in the link is different from the normal file:
  2. 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 »

Delphi – Viewing an array in the Watch Windows starting from a non-zero index

Posted by jpluimers on 2018/07/04

via [WayBack] Is it possible to range an arrays in Watches view to specific index range? Sometimes I work with arrays that contain 100Ks lines, and Watches limit the view to index 131071… – Mike Torrettinni – Google+

Reminder to check how well this works:

Given FInts: array of integer;

you can declare `TIntArray = array of integer;`

(I’m sure it exists somewhere already but couldn’t find it at the moment) and then watch, for example

TIntArray(@FInts[150000])

–jeroen

PS: Uwe Raabe commented on G+:

Uwe Raabe+1

You can add a watch variable like arr[4711] and set the repeat count to a sensible value. Unfortunately this will give you a single line display which is not expandable.
https://quality.embarcadero.com/browse/RSP-19468
“Allow expanding watch variable with repeat count > 1”

Posted in Delphi, Development, Software Development | 1 Comment »

Two reasons I love Visual Studio Code over Atom.io: built-in markdown support and vscode-markdown; just watch the CHANGELOG.md at master · neilsustc/vscode-markdown · GitHub

Posted by jpluimers on 2018/07/03

Boy, I love this so much: [WayBack] vscode-markdown/CHANGELOG.md at master · neilsustc/vscode-markdown · GitHub

Just a few of the screen videos:

  • Formula support
  • Table of Contents (ToC) support including leaving out individual headings:
  • On the fly list renumbering:
  • Image reference completion including image preview:

–jeroen

Posted in Development, Lightweight markup language, MarkDown, Software Development | Leave a Comment »

Delphi – ModelMaker Code Explorer history lists in the registry

Posted by jpluimers on 2018/07/03

ModelMaker Code Explorer does not allow you to edit the “most recently used” items in that you can use in various places, but luckily these history lists are all in the registry as keys under this base key:

HKEY_CURRENT_USER\Software\ModelMaker\MideX\#.0\Histories

There # is the major version number of ModelMaker Code Explorer (internally named MideX).

Under the base key, you can find these keys:

  • ExternalSpac  not figured out yet
  • InterfaceSupport not figured out yet
  • Object PascalParameters list limited to 60 individual parameters (“Modifier Name: Type = Default”)
  • Parameters list limited to 60 parameter lists in the “Edit Method” wizard.
  • PascalTypeNames list limited to 60 variable types
  • PascalVarLookup list limited to 60 variables (each of form “Variable: Type”) used in the “Add Explaining Variable” wizard.
  • PropArray array indexes used in the property editor
  • PropDefaultSpec default values of properties in the property editor
  • PropWriteParam write parameters in the property editor
  • RenameLocal not figured out yet
  • ResStrExternalFile not figured out yet
  • Surrounds not figured out yet
  • UsedUnits list limited to 30 entries of the uses list editor

If you made a typo anywhere, then just edit or delete these entries.

–jeroen

Posted in Delphi, Development, ModelMaker Code Explorer, Software Development | Leave a Comment »

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