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 ‘.NET’ Category

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A url or site like example.org which always produces a 404 error (and two for 200 and 204)

Posted by jpluimers on 2014/09/10

Yesterday I posted this question on StackOverflow and G+: Is there a url or site like example.org which always produces a 404 error?

Soon after that, I found out three links that produce predictable HTTP status codes:

They also work for https:

Edit 20241223: these also return a 404: http://www.google.com/undefined and https://www.google.com/undefined

On StackOverflow very few people even noticed the question, probably wondering “why?”.

I’m using these links for positive and negative testing of some http / https handling code that needs to be good at coping with positive and negative responses.

In my testing life, I’ve learned the hard way that both negative and positive tests are core part of your suite, hence the question.

–jeroen

via: Is there a url or site like example.org which always produces a 404 error?.     Read the rest of this entry »

Posted in .NET, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, Chrome, Communications Development, Development, HTTP, Internet protocol suite, Power User, REST, Software Development, TCP, Web Browsers, Web Development | Leave a Comment »

Continua CI Version 1.5 has been released (build 1.5.0.268); smaller, faster, loads of new features; Spring4D XE7 builds automated

Posted by jpluimers on 2014/09/10

I’m really happy that Continua CI Version 1.5 got released a few hours ago as per the Continua 1.5 released announcement.

It means that my Build Automation Session during the Dutch Delphi 2014 conference tomorrow can range from:

  • build using MSbuild from the command-line
  • build batch files
  • build using a custom front-end
  • build using Continuous Integration front-end

The session will explain lots of details about what various Delphi versions do, how to cope with dependencies, etc.

In the mean time, the preliminary Spring4D work on build automation is visible to guest users. Those include building for Delphi XE7 for the Win32, Win64 and OSX32 targets (in Debug and Release mode).

There is a huge list of Version 1.5 History @ Continua CI changes, which is partially quoted below.

For me these are the most important:

  • in-place upgrade without having to do any changes on my part
  • truckload of new features (including Delphi XE7, NuGet and Fake F# support)
  • smaller
  • faster

(as a side note: also FinalBuilder 7 was recently updated to support Delphi XE7)

In general, I like Continua CI a lot, most importantly because:

  • it is very stable
  • it has native support for a wide range of software development tools (including Delphi, Visual Studio and much more)
  • supports DVCS (like Git/Mercurial) just as you expect it to
  • if something breaks, you get a response and fix very very soon

You can download the new version through the Downloads @ Continua CI. These are the direct links:

For a breaking issue, there has been an important bug fix, so the new downloads are:

I created an RSS feed through Page2RSS to watch any new releases of Continua CI.

Parts of the changes in 1.5.0.268 1.5.0.278

The full list of changes are at Version 1.5 History @ Continua CI.

Be sure to also look at the official Continua 1.5 released announcement.

Read the rest of this entry »

Posted in .NET, Continua CI, Continuous Integration, Delphi, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Development, Software Development, Spring4D | 5 Comments »

c# – What should I do when I am forced to write unreachable code? – Stack Overflow

Posted by jpluimers on 2014/09/09

Bosak posted an interesting piece of code on StackOverflow last year. His particular code was in C#, but it does not matter what kind of compiler you use:

Sometimes a compiler will complain about unreachable code, for instance when it thinks a function never returns a value.

But you know the program logic does.

Simple solution: When you have code that never should be reached: throw an appropriate exception.

public static int GetInt(int number)
{
    int[] ints = new int[]{ 3, 7, 9, int.MaxValue };
    foreach (int i in ints)
        if (number <= i)
            return i;

    return int.MaxValue; //this should be unreachable code since the last int is int.MaxValue and number <= int.MaxValue is allways true so the above code will allways return
}

The last return could be replaced like this, as proposed by Matt Houser: Read the rest of this entry »

Posted in .NET, .NET 1.x, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, C#, C# 1.0, C# 2.0, C# 3.0, C# 4.0, C# 5.0, Development, Software Development | Leave a Comment »

Revisited from the .NET side: Why doesn’t WINWORD.EXE quit after Closing the document from Delphi? (via: Stack Overflow)

Posted by jpluimers on 2014/09/08

I long time ago, I asked about  [WayBack] Why doesn’t WINWORD.EXE quit after Closing the document from Delphi?.

It turns out that question is a lot harder in .NET than it is in Delphi. I already had a gut feeling of this when at clients I saw many more .NET applications leaking WINWORD.EXE stray processes than Delphi applications, even though both kinds were calling Quit on the Word application object.

Delphi has a deterministic way of coping with interfaces (hence you can do a One-liner RAII in Delphi, or make a memento): Interface references are released at the end of their scope.

.NET has non-deterministic finalization of the Common Language Runtime (CLR) and has Runtime Callable Wrappers (RCWs) around your COM references which are sometimes created “on the fly”.

The combination of non-deterministic finalization and RCWs can be very confusing, so lets start with the parts first. Read the rest of this entry »

Posted in .NET, Delphi, Development, Software Development | 2 Comments »

VSCommands: one of the greatest free Visual Studio addons

Posted by jpluimers on 2014/09/04

My programming life would be much harder without this in my toolchest: VSCommands for Visual Studio extension.

–jeroen

Posted in .NET, Development, Software Development | Leave a Comment »

Microsoft partner stuff: MSDN, TechNet, ActionPacks, various Sparks, etc

Posted by jpluimers on 2014/09/03

So I won’t forget the links:

–jeroen

Posted in .NET, Development, Software Development | 2 Comments »

NTLM authentication: Connect to TFS 2013 Git Repository with LibGit2Sharp (via: Gáspár Nagy on software)

Posted by jpluimers on 2014/08/26

I’m fighting some NTLM issues with a proxy server and this might come in handy one day: Connect to TFS 2013 Git Repository with LibGit2Sharp « Gáspár Nagy on software.

https://github.com/gasparnagy/Sample_NtlmGitTest/

–jeroen

 

Posted in .NET, C#, Development, NTLM, Power User, Software Development, Windows | Leave a Comment »

When deadlocks become livelocks (via: Do deadlocks cause high CPU utilization? – Stack Overflow)

Posted by jpluimers on 2014/08/20

Depending on how you organize locks (for instance via waiting on semaphores or mutexes or spinlocks), deadlocks can become livelocks:

Inability to make forward progress because of conflicting spinlocks is usually referred to as ‘livelock’.

Thanks to Martin James for reminding me of that and Danny Thorpe for describing different ways of locking.

Be sure to read on deadlock prevention as well.

–jeroen

via: c++ – Do deadlocks cause high CPU utilization? – Stack Overflow.

Posted in .NET, C++, Delphi, Development, Software Development | Leave a Comment »

Tim Anderson on Developing an app on Microsoft Azure: a few quick reflections…

Posted by jpluimers on 2014/08/14

Very nice summary: Developing an app on Microsoft Azure: a few quick reflections….

–jeroen

Posted in .NET, .NET 4.5, C#, C# 4.0, C# 5.0, C# 6 (Roslyn), Cloud Development, Development, Software Development, Visual Studio 2013, Visual Studio 2014, Visual Studio and tools, Windows Azure | Leave a Comment »

Which Windows Resource Editor do you use?

Posted by jpluimers on 2014/08/13

In the past, I used the XN Resource Editor, but it hasn’t been maintained for a while.

Which resource editor do you use?

Based on a few links I found, I will be trying these:

–jeroen

PS: More comments in this G+ thread.

via:

Edit 20221225: poll results so far

[Wayback/Archive] Windows Resouce Editor – Results (poll 7139042)

Posted in .NET, Delphi, Development, Software Development | 12 Comments »

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