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• Entity framework and database logic.

  - by Xavier Devian

  Hi all, i have a question that's being around for several years. As all you know entity framework is an ORM tool that tries to model the database to an object oriented access model. All the samples I've seen are quering directly to the database tables. So, which is the role of the views in the database now?. The views were used to model the database in a more friendly way, that is, several physical tables, one logic table. This was great for example in hidding the complex relational model on stored procedures as queryng the views inside them was much easier than reproducing the query joins over and over on each stored procedure. So the question is, why is entity framework so good if stored procedures can not take benefit of it?

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• Looking for new hosting company

  - by Charles Chadwick

  I am currently looking for a new hosting company for my business. We are a design and development company and have been recommending WestHost to our clients for the last several years. However due to some changes they have implemented in the last year, we have decided to start referring people elsewhere. Most of our clients need affordable Linux hosting with the basics. SSH is also a definite must and 24/7 support (preferably phone, as well as email/ticket system) that won't cost extra. An easy to use and understand control panel would be nice as well. I have heard good things about HostGator, and am wondering if anyone has experience with them. The prices seem right and they have everything we need. We are also thinking of purchasing a dedicated server with them for a specific project that's going to require one. I don't know if I am asking this in the right place, if this is not welcome here please let me know.

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• Should I use integer primary IDs?

  - by arthurprs

  For example, I always generate an auto-increment field for the users table, but I also specify a UNIQUE index on their usernames. There are situations that I first need to get the userId for a given username and then execute the desired query, or use a JOIN in the desired query. It's 2 trips to the database or a JOIN vs. a varchar index. Should I use integer primary IDs? Is there a real performance benefit on INT over small VARCHAR indexes?

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• Multiple Reporting Services databases in one instance?

  - by Tedd Hansen

  Is it possible to have multiple Reporting Services databases in one MSSQL instance? I have a MSSQL 2008 R2 with RS set to SharePoint Integrated Mode. This RS is in use and can't be changed. I do however need a RS in native mode for the TFS installation to be able to use it. Am I required to set up a new instance of MSSQL? Bonus question: If so, is that permitted under the MS licensing scheme or is it an additional cost?

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• Shader vs Shader Material , papervision specific , general insight welcome.

  - by RadAdam

  hello overflow. I asked this question on the pv3d forum and not a single person could, or cared to answer it. Im relatively new to 3d so i apologize if this is common sense to some. I have a sphere , in which i am applying a CellMaterial to. Looks great. I noticed that in the papervision sdk , there is also a CellShader. Should I be using this in congruence with the CellMaterial ? Should it be one or the other ? Is shader , a deprecated practice to Shader Material ? My initial thoughts were that the shader applies to the whole scene , while materials can be applied uniquely to objects. The documentation seems to show otherwise. What benefit if any could be gained by using both a CellShader and a CellMaterial ? id really love to get some ambient inclusion in there some how.

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• What can I use the Google App Engine for?

  - by Sergio Boombastic

  This question possibly doesn't belong here. We'll see how the answers pan out, if this doesn't belong here please move it to where it belongs. I'm following the getting started guide for Google App Engine, and I'm seeing what it can and can't do. Basically, I'm seeing it's very similar to an MVC pattern. You create your model, then create a View that uses that Model to display information. Not only that, but it uses a controller of some kind in this fashion: application = webapp.WSGIApplication( [('/', MainPage)], debug=True) My question is, why would you use this Google App Engine if it's the same as using a number of other MVC frameworks? Is the only benefit you gain the load balancing being handled by Google automagically? What is a good example of something you would need the App Engine for? I'm trying to learn, so thanks for the discussion.

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• Can you suggest some DIY PC specs for 1) Value, and 2) Future 'upgradability'?

  - by user17381

  Hi, I'm considering building a new desktop PC from components. For the last 7/8 or so years I have almost exlusively used laptops, and so have fallen behind a bit with knowledge of various hardware technologies. Anyway, now I'm considering building a new desktop machine. Mainly for development work, but also would be nice to do a bit of gaming. The two main criteria are: I would like the first build to be relatively low cost. I would like to select components that will allow me to upgrade in the future without throwing too much away. Can anyone recommend a setup? Thanks

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• Are there other application layer firewalls like Microfot TMG (ISA) that do advanced http rules?

  - by Bret Fisher

  Since the old days ISA and now TMG have had several great features that I often want to deploy to my customers because of the enhanced functionality and security, but often the cost of an additinal server HW, Windows Server, and TMG license is too much to justify when compaired to a $300-500 appliance. Are there other gateway firewalls that can perform one or more of these application layer features: pre-auth incoming http traffic against AD/LDAP before sending packets to internal server (forms auth or basic creds popup)? read host headers of incoming http traffic (even on https) to a single public IP and route packets to different internal servers based on that host header?

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• How can I avoid heroku stopping my dyno?

  - by iwein

  I build MVP's for clients regularly. Often I deploy on Heroku so they can see if the product works and demo it to prospects and investors. Then I have an application deployed on heroku, and it works like a charm, if not for one little thing. The app takes about 30 seconds to start up and heroku has the annoying habit of killing dyno's if they don't get traffic. My client is using the application for demo purposes now, so the load is extremely low and intermittent. I'm looking for a solution that is preferably: cost effective can be applied to multiple apps simultaneously What is the best way to avoid having the first request taking 30 seconds?

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• Aldon and .Net Development

  - by David Stratton

  I'm looking for feedback from .Net developers who have experience with Aldon as a lifecycle management platform. We're seriously considering using Aldon for lifecycle management including source control, automated builds, etc. I know there are a lot of other options out there, but ours is primary an AS/400 shop (with AS/400 programmers outnumbering .Net developers 6 to 1), and Aldon is used already by our iSeries team. The benefit we're looking for is having one lifecycle management suite. Basically, I'm looking for opinions from people who have used Aldon and another set of tools (perhaps TFS, or a combination of SVN, Cruise Control, etc). If you've worked with both, do you have a recommendation on whether this is a good idea, or a bad idea? It's obviously a big choice, so any feedback would be helpful.

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• Automating the insertion of credits in video files on Mac OS X

  - by Roberto Aloi

  I have a bunch of video files (mp4). I need to insert some title information at the beginning and some credits at the end. I'm currently using iMovie. Since the title could be extracted from the filename and the credits are always the same, I'm wondering how could I make all this process as automatic as possible. I was thinking about Automator, but I'm open to any other solution. iMovie is the preferred tool so far, but I could use anything else (as far as it doesn't require additional licensing/cost). Any idea?

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• How to store static content across branches in a single location in version control

  - by Shravan

  [Just a random thought] I have a pdf doc that is downloaded when the user clicks on 'help' on my website. Now, this is a pretty huge document and is saved in version control (SVN) and is thus copied for all branches that exist in SVN. This is static content and something that developers are not working on, and does not change often. Is there a more efficient way to store it (that would not hamper local deployments) that would make SVN checkouts and updates relatively faster. I know the benefit we get is not huge, this is something that came to my head none the less.

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• What are the minimum required modules to run WordPress

  - by Mister IT Guru

  Recently a 'consultant' came in to talk to bean counters at my place of employment, with regards to being more efficient with our IT infrastructure. They suggested to be more efficient we should only load the Apache modules that are required on our web servers. (This is just 1 of 1Ks of suggestions). The Bean Counters are very excited, and prepared for me to spend the time to investigate this avenue of cost cutting. I don't mind this mundane exercise, I see it as a learning experience! I guess this leads me to the actual question: How can I determine the minimum required apache modules for a PHP based application without actually going through the code, or plain old trial and error?

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• New/strange Java "try()" syntax?

  - by Ali

  While messing around with the custom formatting options in Eclipse, in one of the sample pieces of code, I say code as follows: /** * 'try-with-resources' */ class Example { void foo() { try (FileReader reader1 = new FileReader("file1"); FileReader reader2 = new FileReader("file2")) { } } } I've never seen try used like this and I've been coding in Java for 9 years! Does any one know why you would do this? What is a possible use-case / benefit of doing this? An other pieces of code I saw, I thought was a very useful shorthand so I'm sharing it here as well, it's pretty obvious what it does: /** * 'multi-catch' */ class Example { void foo() { try { } catch (IllegalArgumentException | NullPointerException | ClassCastException e) { e.printStackTrace(); } } }

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• Is re-using a Command and Connection object in ado.net a legitimate way of reducing new object creat

  - by Neil Trodden

  The current way our application is written, involves creating a new connection and command object in every method that access our sqlite db. Considering we need it to run on a WM5 device, that is leading to hideous performance. Our plan is to use just one connection object per-thread but it's also occurred to us to use one global command object per-thread too. The benefit of this is it reduces the overhead on the garbage collector created by instantiating objects all over the place. I can't find any advice against doing this but wondered if anyone can answer definitively if this is a good or bad thing to do, and why?

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• Pivot Table from data with merged cells

  - by Graeme

  I have a energy spreadsheet for multiple sites. the first row has month and year. the next row has columns for date invoice received, KW hours and cost. So there are three columns for each month. I have merged the month cell across the three columns. When i create a pivot table the date kw/h and costs are labled date1, date2, etc. Can I link the months headings to the subheadings to get meaningful headings in the pivot table????

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• What would you do if you coded a C++/OO cross-platform framework and realize its laying on your disk

  - by Manuel

  This project started as a development platform because i wanted to be able to write games for mobile devices, but also being able to run and debug the code on my desktop machine too (ie, the EPOC device emulator was so bad): the platforms it currently supports are: Window-desktop WinCE Symbian iPhone The architecture it's quite complete with 16bit 565 video framebuffer, blitters, basic raster ops, software pixel shaders, audio mixer with shaders (dsp fx), basic input, a simple virtual file system... although this thing is at it's first write and so there are places where some refactoring would be needed. Everything has been abstracted away and the guiding principle are: mostly clean code, as if it was a book to just be read object-orientation, without sacrifying performances mobile centric The idea was to open source it, but without being able to manage it, i doubt the software itself would benefit from this move.. Nevertheless, i myself have learned a lot from unmaintained projects. So, thanking you in advance for reading all this... really, what would you do?

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• What is the differnce between "LINQ to Entities", "LINQ to SQL" and "LINQ to Dataset".

  - by Marcel

  Hi all, I'm working for quite a while now with LINQ. However, it remained still a bit of a mystery what are the real differences between the mentioned flavours of LINQ. The successful answer will contain a short differentiation between them. What is the main goal if it, what is the benefit, and is there a performance impact... P.S. I know that there are a lot of information sources out there, but I look for a kind of a "cheat sheet" which instructs a newbie where to head to for a specific goal.

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• Why use event listeners over function calls?

  - by Organiccat

  I've been studying event listeners lately and I think I've finally gotten them down. Basically, they are functions that are called on another object's method. My question is, why create an event listener when calling the function will work just fine? Example, I want to call player.display_health(), and when this is fired, the method player.get_health() should be fired and stored so that display_health() has access to it. Why should I use an event listener over simply calling the function? Even if display_health() were in another object, this still doesn't appear to be a problem to me. If you have another example that fits the usage better, please let me know. Perhaps particular languages don't benefit from it as much? (Javascript, PHP, ASP?)

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• Online Code Coloring Service

  - by Sarfraz

  Hello, I would like to know if anyone knows of an online service where we paste the code and it generates back the colored html source code for that code. It could be PHP, HTML, CSS, Javascript, C, Java. Idea is that once i have the colored html code, i could easily put that in my wordpress.com blog. I know about [sourcecode language="whatever"] but just wanted to know an online service that supports multiple languages. The benefit is that, i can choose any color style/theme from that online service for my code. Thanks.

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• Centos OS resource footprint vs Ubuntu package refresh

  - by webworm

  I am trying to determine which distro to sink my teeth into. I am new to the Linux world and would like to choose a distro to focus on. I have read that CentOS uses less resources than Ubuntu, which is an issue for me since I am renting a VPS and resource cost is an issue. I have also read that Ubuntu has more up-to-date packages which is a concern for me as I want to use PHP and some packages that have a fair amount of dependencies. I am not using Linux as a desktop OS, rather just as a server for Apache, PHP, PERL, and Java development. What would be the best choice for a server OS? CentOS or Ubuntu? Are the resource requirements that different? Are the packages that different between the two? Thanks.

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• Is it wise to use SSHDs (Solid state hybrid drives) on a server?

  - by Seb

  I have a bunch of servers with very heavy I/O that currently use SATA3/SAS drives, but do suffer from I/O wait on the SATA drives, and I have just been alerted to the existence of SSHDs which cost the same for 1TB as the 1TB SATA drives that we currently use. However, previously (until Seagate shipped their first 3.5" SSHD in March) they seemed to be exclusively for Netbooks/Notebooks, which leads me to suspect they're not exactly built for the heavy I/O they'd be in for with my servers. So, would an SSHD give me a performance boost over my SATA3 drives in a heavy I/O environment (such as multiple very large high speed file transfers) or is it best to stick with SATA3 with I/O wait??

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• I need some MySQL lookup table advice

  - by Gary Beam

  I have a MySQL database with about 200 tables. 50 of these are small 2-field 'id-data' lookup tables. Several of these DB's are hosted on a shared server. I have been informed that I need to reduce the total number of tables in the shared hosting environment because of performance issues relating to too many tables. My question is: Could/Should the 50 2-Field lookup tables be combined into a single 3-field table with 'id-field_name-data' Fields? Even if this can be done, I will have a lot of work to do on the PHP user application. My other choice is moving the DB's to a dedicated server at much higher hosting cost. I don't believe my 200 table DB's are actually causing any performance issues on this shared hosting server, at least not from the user application standpoint. There are never more than 10 of these tables joined in any single query; although I have seen some very-slow queries generated by phpmyadmin on these DB's.

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• Tons of spam on dreamhost mail user account

  - by user122022

  I use dreamhost for my webserver/ email host. I have about 25 users on one domain. and 1 of these users is absolutely inundated with spam every day. I have tried using dreamhosts poor blacklist feature, which was semi working (still letting a lot through) but I reached the 1000 email blacklist maximum very quickly. I have the ability to switch to google apps but that would be very expensive for 25 users. What options do I have aside from changing hosts with better spam filtering? I don't think its possible to only switch 1 user to google apps, it has to be the whole domain. There are other benefits to switching but I don't think they outweigh the cost for this company.

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• Why do people still use C these days? [closed]

  - by Joshua

  C++ is clearly a far superior language than C, since it has many features that C lacks (although, C++'s object model isn't as ideal as say C#'s). With the coming off the new C++0x standard, why hasn't C been phased out to obscurity? C++ has been around for so long, since the '80s. The Linux kernel has already been ported to C++ with negligible performance differences. I believe, with no evidence, that larger program structures benefit in performance if written in C++ than in C, if only because of object interaction. Don't get me started on "objects-in-C!" libraries, which are all a terrible hack. (Not that C++'s object model is the most ideal, but it is almost up to snuff with C# using common ad-hoc techniques.)

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