Entries for Maddus Mattus

.Net R-Tree [.Net R-Tree]

Maddus Mattus — Thu, 17 Sep 2009 07:49:53 GMT

I am searching for an c# implemnetation of an R-Tree.

It's for my pet project, basically I need to index appointments and see wich ones overlap a certain time period.

An R-Tree seems like the best option, but I can't find any for .Net,..

Anyone have any ideas?

in reply to .Net R-Tree

Ask the Gu [Ask the Gu]

Maddus Mattus — Fri, 20 Mar 2009 10:55:42 GMT

Thanks for the watermark C9 team

I laughed my bottom off!

in reply to Ask the Gu

Jeff Jones: 2008 desktop vulnerability report [Jeff Jones: 2008 desktop vulnerability report]

Maddus Mattus — Fri, 31 Oct 2008 10:19:30 GMT

I didnt see this in the Coffee house yet, excuse me if it posted allready.

Jeff Jones together with some other peeps put together a desktop vulnerability report.

http://blogs.technet.com/security/archive/2008/10/28/download-h1-2008-desktop-vuln-report.aspx

It caused quite an uproar on a dutch site I often visit. It was debated that the report was biased and conveniently left certain things out of scope. Is this report truly the report that it is ment to be or just a publicity stunt?

I am a really big fan of Microsoft, because I like the technology, but are these types of public reports really nessesairy?

Wouldnt it be much better to report on their own time to bug report and patch? Instead of comparing it to the other OS-es?

It seems to do more harm then good.

in reply to Jeff Jones: 2008 desktop vulnerability report

Performance [Performance]

Maddus Mattus — Tue, 29 Jul 2008 14:14:48 GMT

Is excellent now!

I dont know what you guys did, but it's working fabulous!

With all these negative threads around, I thought i would sneak a positive one in!

in reply to Performance

LINQ2SQL problem [LINQ2SQL problem]

Maddus Mattus — Wed, 23 Jul 2008 13:47:06 GMT

The current project I am participating in uses the new LINQ2SQL tool/framework.

We progressed fast in the beginning, but as with all these tools the first 80% flies by and the last 20% takes 500% of the time.

I've worked around the problem that LINQ2SQL wants to update child entities that are not modified. I have to set the entity reference to null by creating a method in a partial class, so the entity gets ignored by LINQ2SQL. Otherwise I get a silly; "You have set this property to null, but you are not allowed to do that. Because we know better then you" error.

But now I've come across a problem, wich there is no easy work around for and I can't get my head around it. More so, the documentation in MSDN seriously made me angry.

http://msdn.microsoft.com/en-us/library/bb425822.aspx

If the transaction completes successfully, the DataContext throws out all the accumulated tracking information and treats the new states of the entities as unchanged. It does not, however, rollback the changes to your objects if the transaction fails. This allows you the maximum flexibility in dealing with problems during change submission.

Our scenario is that we have a web application with a wizard, wich holds LINQ2SQL entities in the session. The user then modifies this entity and adds/removes child entities to it. When the user is happy with the result, he can save his work to the database.

The insert for any of the obvious reasons could fail. But LINQ2SQL places all database generated values in my object. But I dont want that. I want to be able to rollback those changes, so the user can correct his errors and try again. But now, the data is corrupted by LINQ2SQL and the user has to start all over again.

It says it is for greater flexibility! But the values it places in the entity have no meaning! And I must roll all changes back manually!

We had row versions in Typed Datasets back in 2000 and we were able to RejectChanges()! This is 2008 and it's missing,..... :(

Seriously? To quote my idol Jeremy Clarkson; "How hard can it be?" (And it ends up in a great fireball, but that's beside the point)

My only option here is to create some sort of shadow class and copy the values, unless you guys can help me with a better idea?

in reply to LINQ2SQL problem

Proper smiley usage [Proper smiley usage]

Maddus Mattus — Thu, 10 Jul 2008 11:01:09 GMT

Couldnt find a post with this bug, if there is ignore this.

When posting smileys, some dont get parsed into an image.,.

:D:D:D:D:D:D:D:D:D:D:D

:D :D :D :D :D :D :D :D

(if you put a smiley as last word on the page, or no space in between)

:D :D :D :D :D examples :D

in reply to Proper smiley usage

Replies 2 Views 0 [Replies 2 Views 0 ]

Maddus Mattus — Thu, 03 Jul 2008 09:15:11 GMT

Transferring a domain

Posted By: giovanni | Today @ 10:39 AM

Last By: turrican
Time: http://channel9.msdn.com/forums/Coffeehouse/413455-Transferring-a-domain/#CommentID=413457

That shouldn't be possible, should it?

Edit:

I should have made the title more friendly, my apologies.

in reply to Replies 2 Views 0

Vienna switches back to Vista [Vienna switches back to Vista]

Maddus Mattus — Mon, 09 Jun 2008 13:15:59 GMT

Interesting read:

http://ostatic.com/164243-blog/vienna-linux-and-pragmatism

It seems the best software gets developed on Windows, but as a Microsoft developer I allready knew that ;)

I am just curious how open-source market works. In a free market, if there is a demand, companies will write programs that fill that demand. But am I correct in assuming that in open-source land personal interest dominates the market? Or are the developers hired by companies to contribute to projects that take their interest?

in reply to Vienna switches back to Vista

Attribute usage [Attribute usage]

Maddus Mattus — Mon, 26 May 2008 20:57:40 GMT

Recently had a debate with a collegue about when to use attributes.
I was against the use because (in our scenario):

It complicated the code
It could be solved in a different way more easily
It relied on reflection (security? performance?)
I believe it should be used when you need meta data to communicate between two classes who are unknown to each other, wich was not the case

Can anybody point me to some guidelines or proven practices? Cause I've been searching the net and couldnt come up with any.

in reply to Attribute usage

The value of human life [The value of human life]

Maddus Mattus — Mon, 26 May 2008 13:50:39 GMT

$129,000,...

http://www.time.com/time/health/article/0,8599,1808049,00.html

What scares me the most, is that in Europe we are worth around $50,000,-.

In Holland we just revised our health care system, and from the looks of it not for the better.

in reply to The value of human life

What keeps you going? [What keeps you going?]

Maddus Mattus — Wed, 07 May 2008 09:03:19 GMT

I am having trouble keeping myself motivated.

I get tired a lot and my inspiration sinks to the bottom.

I am in search of ways to keep myself motivated, other then using sheer willpower.

So my question to you guys and girl is:

How do you keep yourself motivated?

in reply to What keeps you going?

Re: Silverlight on the iPhone [Silverlight on the iPhone]

Maddus Mattus — Tue, 11 Mar 2008 06:45:29 GMT

Windows Mobile on the iPhone!

in reply to Silverlight on the iPhone

9-Guy at Microsoft Netherlands [9-Guy at Microsoft Netherlands]

Maddus Mattus — Thu, 28 Feb 2008 10:21:34 GMT

Channel 9 Guy in the Microsoft parking lot ;)

in reply to 9-Guy at Microsoft Netherlands

EU may fine (fined) Microsoft for $1.4 bil [EU may fine (fined) Microsoft for $1.4 bil]

Maddus Mattus — Wed, 27 Feb 2008 10:48:18 GMT

According to Bloomberg: http://www.bloomberg.com/apps/news?pid=20601085&sid=advVtkVK6IHQ&refer=europe

What amazes me is that the EU has never said how open Microsoft should be. How can you fine someone if you dont explain them the rules?

in reply to EU may fine (fined) Microsoft for $1.4 bil

Should Microsoft Open Source Windows XP? [Should Microsoft Open Source Windows XP?]

Maddus Mattus — Thu, 31 Jan 2008 08:52:47 GMT

I just hit my head against the door and came up with this amazing idea and I was wondering what you guys think.

How would you feel about Microsoft open sourcing XP and keep Vista under closed source until it's predecessor comes around? Or is the OS to young? Would you rather see Windows 2000 become open source? Or none at all,...

in reply to Should Microsoft Open Source Windows XP?

French Police switches to Linux [French Police switches to Linux]

Maddus Mattus — Wed, 30 Jan 2008 16:03:02 GMT

http://afp.google.com/article/ALeqM5iU4Lq7tOR_WVOJLZ3IeRaIH03x6w

100.000 pc's running Ubuntu and Dell is starting to sell them again here in Europe.

Seems like this is the moment of truth for Linux as a desktop OS. I am looking forward into seeing some results!

in reply to French Police switches to Linux

Hardest game ever [Hardest game ever]

Maddus Mattus — Thu, 27 Dec 2007 22:24:03 GMT

http://www.snotr.com/video/774

Dunno if it has been posted, but it made me laugh,..