Archive for the ‘.NET’ Category
Posted by jpluimers on 2020/12/02
[WayBack] Spring Collections I have a list of elements, there are, for example, 100 of them. List : IList; I want to get 5 values greater than 10 and … – Jacek Laskowski – Google+
Q
I have a list of elements, there are, for example, 100 of them.
List : IList<Integer>;
I want to get 5 values greater than 10 and I do it like this:
result: = List.Where(ValueIsGreatThan10).Take(5);
Will the “work loop” be executed a minimum number of times and if, for example, the first 5 values in the list will be greater than 5, then only the five will be checked? Or maybe the Where() loop will scan 100 elements, and Take() will return the first 5 results?
A (by Stefan Glienke)
Where and Take are streaming operators and only execute as much as required.
Also the operations have deferred execution. So your statement does not materialize any collection yet. Only if you iterate it will.
They are designed after the operators in .NET so the table from [WayBack] Classification of Standard Query Operators by Manner of Execution (C#) | Microsoft Docs applies. If you find any difference please report it.
Example:
var
nums: IEnumerable<Integer>;
i: Integer;
begin
nums := TEnumerable.Range(1, 100).Where(
function(const i: Integer): Boolean
begin
Writeln('checking: ', i);
Result := i > 10;
end
).Take(5);
Writeln('query created');
for i in nums do
Writeln('got number: ', i);
end.
This code will print:
query created
checking: 1
checking: 2
checking: 3
checking: 4
checking: 5
checking: 6
checking: 7
checking: 8
checking: 9
checking: 10
checking: 11
got number: 11
checking: 12
got number: 12
checking: 13
got number: 13
checking: 14
got number: 14
checking: 15
got number: 15
–jeroen
Posted in .NET, Delphi, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2020/11/17
[WayBack] FeaturesShim is a cool Chocolatey feature that uses ShimGen.
This allows Chocolatey to take only one directory in your search PATH, with a lot of small files, that link to the much larger actual executable files.
ShimGen (like many other parts of Windows and some other parts of Chocolatey) is not open source, but the mechanism is documented.
More information:
–jeroen
Posted in .NET, Development, Power User, Software Development, Windows, Windows Development | Leave a Comment »
Posted by jpluimers on 2020/11/11
Sometimes you are in search of a real TAB character, as most editors (except a few like the ones for Golang) I bump into are space-based. A great answer at [WayBack] visual studio code – VSCode insert tab character manually – Stack Overflow:
Quick-and-dirty solution: Find a tab somewhere else, then copy-paste.
Chances are that you already have a tab character in the file you are editing, but if not you can generate one in another application or text editor.
You can also generate a tab programmatically in a bash shell with the following command (the brackets are optional):
echo -e [\\t]
For your more immediate needs, I have inserted a tab character below…
There is a tab character between these brackets: [ ]
–jeroen
Posted in Development, Software Development, Visual Studio and tools, vscode Visual Studio Code | Leave a Comment »
Posted by jpluimers on 2020/10/22
Always interesting to see what others put on their Windows development systems, for instance: [WayBack] My toolkit – Roald’s blog
Everytime I (re)install my development computer I need to think about all the tools I need and use on a regular basis. For that reason, and maybe to inspire others, here’s my list of essentia…
–jeroen
Posted in .NET, Delphi, Development, Software Development, Windows Development | Leave a Comment »
Posted by jpluimers on 2020/10/21
[WayBack] Top 45 Best Automation Testing Tools Ultimate List • Test Automation Made Easy: Tools, Tips & Training Awesomeness A few notes, partially related to Enable your device for development – UWP app developer | Microsoft Docs.
One research project I had a while ago, was to see how it was possible to use a generic testing tool like Katalon Studio (that can test many platforms), for testing Windows applications.
Katalon uses a Selenium interface that normally is used for web applications through the [WayBack] WebDriver protocol (formerly [WayBack] JsonWireProtocol) that continues to be updated: [WayBack] draft upcoming WebDriver protocol, which is more generic than just web applications:
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Posted in .NET, Conference Topics, Conferences, Delphi, Development, Event, Software Development, Windows Development, WinForms, WPF | Leave a Comment »
Posted by jpluimers on 2020/10/14
The idea is to have a stack of things that can be later put into multiple micro-service pillars.
Helpful: enable “Track Active Item in Solution Explorer”:
- Start with an empty repository; add an
origin
- Add .gitignore / .gitattributes appropriate for C#, for instance from github.com/Microsoft/vswhere,
git commit it, and push it withgit push -u origin master.
- Add a blank solution using Creating a blank Visual Studio solution without a directory, and sln Format Version numbers and EmptyVisualStudioSolution
- Open the solution
- Add an “ASP.NET Core Web Application”
- Choose “API” in the list of ASP.NET templates, without Authentication or Docker support (let’s keep the balance bit simple enough for now)
- Run with Ctrl-F5, then confirm the SSL development certificate, and install it:
---------------------------
Security Warning
---------------------------
You are about to install a certificate from a certification authority (CA) claiming to represent:
localhost
Windows cannot validate that the certificate is actually from "localhost". You should confirm its origin by contacting "localhost". The following number will assist you in this process:
Thumbprint (sha1): 09EA054F 14D5D4CE 6B22C5F1 3E7EBDB5 F7583116
Warning:
If you install this root certificate, Windows will automatically trust any certificate issued by this CA. Installing a certificate with an unconfirmed thumbprint is a security risk. If you click "Yes" you acknowledge this risk.
Do you want to install this certificate?
---------------------------
Yes No
---------------------------
- Your browser now opens at a port for debugging:
https://localhost:<port>/api/values, then tries to download the result as values.json.
This is configured in Properties\launchSettings.json under "launchUrl": "api/values" (for the browser URL) and Controllers\ValuesController.cs under // GET api/values for the actual implementation.
- a
a
a
IHostedService
Have any service related stuff implement IHostedService, so it is easy to deploy it in all kinds of processes:
- console to test
- windows service
- ASP.NET Core service
- Linux host application
Background information at .NET: IHostedService « The Wiert Corner – irregular stream of stuff.
–jeroen
Related:
Posted in .NET, .NET Core, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2020/09/28
Windows 10 comes with a broken Camera viewer and before that, Windows 7 killed the one in Windows XP.
On a Mac you have the open source Quick Camera (which named QCamera before, seeViewing an USB camera on Mac OS X without mirroring and Capturing from a Magewell XI100USB on a Mac using OS X) at [WayBack] GitHub – simonguest/quick-camera.
For Windows 7, a long search initially revealed a lot of bloat-ware, but finally ended to these two both from the same author:
It is not open source (yet?), but since it is .NET, it is reasonable easy to see the innards.
Like QCamera, it does not require installation: just unzip and run. Enjoy!
Yes, I know there are Windows 10 workaround steps via Microsoft.CameraApp.App.ctor, but if you look at [WayBack] Win10 Home N – Camera App fails: System.IO.FileNotFoundException – Microsoft Community you will understand I did not apply them.
Similarly, when you install Skype from the app store, then sign-in, it will tell you that Skype is out of date.
–jeroen
via:
Posted in .NET, Apple, Development, Mac OS X / OS X / MacOS, Power User, Software Development, Windows | Leave a Comment »
Posted by jpluimers on 2020/08/12
This and built-in markdown support made the switch to Visual Studio code from Atom.io so much easier: [WayBack] PlantUML – Visual Studio Marketplace.
Atom.io was already on my list of tools to say good bye to: though a good project to show the versatility of the Electron Framework, over time – like Google Chrome – it had become a memory and CPU hog and a drag to use and update.
Integrating debuggers and other parts of the development life cycle involved too much fuzz, for which Visual Studio code (also known as vscode) was much easier from the start.
Probably Visual Studio code did not suffer from what the Dutch call Law of the handicap of a head start: it is much more responsive and versatile than Atom.io. Also the plugins – despite having come to the market later – feel way more mature in Visual Studio code than Atom.io.
Finally, the PlantUML support extension for vscode is so much nicer than in Atom.io, it for instance supports live updating and in addition to local rendering, rendering through a PlantUML server (see [WayBack] GitHub – plantuml/plantuml-server: PlantUML Online Server).
Source code is at [WayBack] GitHub – qjebbs/vscode-plantuml: Rich PlantUML support for Visual Studio Code.
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Posted in .NET, atom editor, Development, Diagram, PlantUML, Power User, Software Development, Text Editors, UML, Visual Studio and tools, vscode Visual Studio Code | Leave a Comment »
The Wiert Corner - irregular stream of stuff 