When I use the VS2005 xsd gui (which I love) to build a schema what's the simplest way to generate a valid, unpopulated xml file? Do I have to write some C# code or is there a menu-driven tool that I'm missing. Thanks.

Where is the best place, if at all, here on CP to ask about best practices for maintaining, updating, and merging a repo when there are regular updates from an external open-source site ? this is not because I want to have a repo of their repo, but rather I make various modifications to the open source code (for my own use for the time being) but I want to stay current w/ the latest release. Where should I post a more detailed entry? thx

IronRuby is on the way, following in the footsteps of IronPython. These are both MS built. That should be enough reason, no?

We should have a section for scripting languages, especially latest / greatest such as Ruby. The format of The Code Project is excellent and it would be great to see it extended.

I have 2 tables. I want to use info from the second table to update column values in the first. Consider: T1: id time1 time2 1 8:00 null 2 8:01 null 3 8:02 null 4 8:12 null T2: id time2 2 8:09 4 8:15 What I want is: T1: id time1 time2 1 8:00 null 2 8:01 8:09 3 8:02 null 4 8:12 8:15 Is there an sql command sequence that can achieve this? Its easy to think about it iteratively, but in the absense of explicit iterators in sql (to my understanding) I hope that there's another way. Its clear that I can exec the join: select T1.id, T1.time2 from T1, T2 where T1.id = T2.id but using this as part of an update is broken (well, because I don't know how to do it): (wrong:) update T1 set time2 = ( select time2 from T1, T2 where T1.id = T2.id) where id = ( select id from T1, T2 where T1.id = T2.id ) how can I write an on T1.time2 that matches T1.id = T2.id and updates the T1.time2 null with the T2.time2 ?

Mind you -- that most are patented it a great thing -- you can read exactly how it is done. www.uspto.gov or patents.google.com. I'm not advocating IP theft, but the constitutional point of the patent system is to exchange temporary monopoly for full public disclosure. The best parts of a patent for non-lawyers is the background and following 'spec' (specification). Good luck, spin-vec

I'm an odd newbie: I need to compile unmanaged c++ code in VS2005. I've only compiled managed c# in VS'03/'05. What switches do I need to set, and do I need to also do something with the linker. Thx.

Hey, I didn't know about this. Looks a bit new and incomplete but certainly interesting to get going with, and perhaps to contribute to. Thanks.

Just as a community note: a windows service is not available w/ VS standard edition -- you must go higher. Thx

You need to apply a unitary matrix transform to your coordinates (http://en.wikipedia.org/wiki/Unitary\_matrix). that is, if you have a point in R3 represented by the vector v_o, then v = U v_o is a rotated coordinate. You need a unitary matrix so that no coordinate in the new basis is scaled with respect to the original basis. Concretely, if you start with an orthonormal system you want to end with an orthonormal system. See rotation matrices on wikipedia: http://en.wikipedia.org/wiki/Rotation\_matrix for more details of making the appropriate R3 rotation matrix. good luck

Reading your brief it seems to me that you should look into the Matlab .NET builder. Its very expensive ($10k) but you can directly link the core matlab engine to .NET, run numerics and pull up graphs, and the matlab package does all the type marshalling for you. You can deploy your whole .NET application w/ the matlab engine w/out license fee (like to a server or something). The matlab core takes 100MB ram and is a singleton (you can have many apps using it). I've used it at work myself and I do highly recommend it if you find its the say to go.

has anyone marshalled the Intel math kernal library to managed code (aka C#)? An example would be excellent. Thx

How do I create a windowless daemon in VS2005? Thx

I'm trying to measure TimeSpans < 15ms on Windows XP. I recall hearing somewhere that windows won't return anything accurate under 15ms. Is that correct? Is there a way to measure down to the ms level? Thx

Good, thanks.

What's a good rule of thumb to use when deciding to add an element or attribute to a datatable?

Hello, I'm new to attributes. Attributes seem to solve a problem I have with my data representation. However, how are attributes stored in a database? Specifically, I'm using VS'03 to build a typed data schema, wherein I create and populate some elements. I can use the SqlDataAdapter to load/retrieve from the dB, no problem. Now, I add attributes to the schema, how do I get them into the dB and what is the representation? Thanks. NYC Traveler

Hello, I'm new to attributes. Attributes seem to solve a problem I have with my data representation. However, how are attributes stored in a database? Specifically, I'm using VS'03 to build a typed data schema, wherein I create and populate some elements. I can use the SqlDataAdapter to load/retrieve from the dB, no problem. Now, I add attributes to the schema, how do I get them into the dB and what is the representation? Thanks. NYC Traveler

Hello, I'm new to attributes. Attributes seem to solve a problem I have with my data representation. However, how are attributes stored in a database? Specifically, I'm using VS'03 to build a typed data schema, wherein I create and populate some elements. I can use the SqlDataAdapter to load/retrieve from the dB, no problem. Now, I add attributes to the schema, how do I get them into the dB and what is the representation? Thanks. NYC Traveler

Also, rereading your original post, you need some grammatical structure here. Read the articles on Yacc, or for .NET anything that is a Yacc-like parser. The article on http://www.codeproject.com/csharp/minossecc.asp seems helpful. Search around, I can't put my finger on it but there are other non-Java .NET parsing meta-languages to help with the file structure. There's always MKS Lex and Yacc -- I've used a long time ago to great effect, not too hard to learn (days). But, find something free if possible. Cheers.