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Articles indexed Friday April 9 2010

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  • Cooperative linux vs vm

    - by Rhythmic Algorithm
    What are the advantages / disadvantages of using cooperative linux like portable ubuntu for example compared to a qemu or any other virtual machine installation. Is one option notably faster than the other plus and other things that should be taken into consideration.

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  • How do I configure nVidia drivers on a Portable Ubuntu setup?

    - by Nicholas Flynt
    I've been pulling my hair out over this one for a couple of days now, google is no help. I've created a wonderful (until this issue) portable copy of Ubuntu linux that will boot on mostly anything by using a USB enclosure for my laptop's 80GB SATA drive. So far so good, it boots and runs on everything, and on non-nVidia card setups was even detecting the drivers, or letting me install the required drivers for hardware acceleration and compiz. Because you know, the wobble windows are the most awesome thing ever. Anyway, my desktop machine had an nVidia card, so I'm thinking, sure, I'll just install the nVidia drivers like before and everything will work happily. Not so-- now the desktop and any other nVidia cards work great, but it seems to have completely disabled any other graphics cards. When the kernel module detects that an nVidia card isn't present, it shoots up this nasty little dialog box giving me the option to boot into "low graphics" mode, which doesn't even allow me to use the correct screen resolution, much less see the installed graphics card and try to configure a driver for it. Is there any way to configure Ubuntu (with the dreaded nVidia kernel module) so that it can use nVidia's drivers when an nVidia card is present, and default to the normal (not low-graphics) setup in other cases, so that it has a fair chance of using what's actually present? I'm not afraid to much with config files, I just don't know the underlying system well enough to feel comfortable diving in without a push in the right direction. Thanks guys!

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  • Engineering Change Orders

    - by Amit Katariya
    Upcoming E1 Manufacturing webcasts   Date: April 20, 2010Time: 1 pm MDTProduct Family: JD Edwards EnterpriseOne Manufacturing   Summary This one-hour session is recommended for technical and functional users who would like to understand the Engineering Change Order process, how this process automates Bill of Material updates, and how changes are tracked.   Topics will include: EnterpriseOne Engineering Change Order Processing ECO statuses and how the system uses them to notify interested parties and drive the approval process ECO parent and component change types Parent/Child Relationships Sample ECO process flow   A short, live demonstration (only if applicable) and question and answer period will be included. Register for this session Oracle Advisor is dedicated to building your awareness around our products and services. This session does not replace offerings from Oracle Global Support Services. Important links related to Webcasts Advisor Webcast Current Schedule Advisor Webcast Archived Recordings Above links requires valid access to My Oracle Support

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  • Can zlib.crc32 or zlib.adler32 be safely used to mask primary keys in URLs?

    - by David Eyk
    In Django Design Patterns, the author recommends using zlib.crc32 to mask primary keys in URLs. After some quick testing, I noticed that crc32 produces negative integers about half the time, which seems undesirable for use in a URL. zlib.adler32 does not appear to produce negatives, but is described as "weaker" than CRC. Is this method (either CRC or Adler-32) safe for usage in a URL as an alternate to a primary key? (i.e. is it collision-safe?) Is the "weaker" Adler-32 a satisfactory alternative for this task? How the heck do you reverse this?! That is, how do you determine the original primary key from the checksum?

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  • clear cookie container in WebRequest

    - by Jeremy
    I'm using the WebRequest object to post data to a login page, then post data to a seperate page on the same site. I am instantiating a CookieContainer and assigning it to the WebRequest object so that the cookies are handled. The problem is that I do not want to retain the cookie after I post data to the other page. How can I delete that cookie?

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  • IIS7 URL Rewriting: How not to drop HTTPS protocol from rewritten URL?

    - by Scott Mitchell
    I'm working on a website that's using IIS 7's URL rewriting feature to do a permanent redirect from example.com to www.example.com, as well as rewrites from similar domain names to the "main" one, such as from www.examples.com to www.example.com. This rewrite rule - shown below - has worked well for sometime now. However, we recently added HTTPS support and noticed that if users visit one of the URLs to be rewritten to www.example.com then HTTPS is dropped. For instance, if a user visits https://example.com they get redirected to http://www.example.com, whereas we would like them to be sent to https://www.example.com. Here is the rewrite rule of interest (in Web.config): <rule name="Canonical Host Name" stopProcessing="true"> <match url="(.*)" /> <conditions logicalGrouping="MatchAny"> <add input="{HTTP_HOST}" pattern="^example\.com$" /> <add input="{HTTP_HOST}" pattern="^(www\.)?example\.net$" /> <add input="{HTTP_HOST}" pattern="^(www\.)?example\.info$" /> <add input="{HTTP_HOST}" pattern="^(www\.)?examples\.com$" /> </conditions> <action type="Redirect" url="http://www.example.com/{R:1}" redirectType="Permanent" /> </rule> As you can see, the action element's url attribute points directly to http://, so I get why https://example.com is redirected to http://www.example.com. My question is, how do I fix this? I tried (naively) to just drop the http:// part from the url attribute, but that didn't work. Thanks!

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  • ASP.NET MVC - Html.DropDownList - Value not set via ViewData.Model

    - by chrisb
    Have just started playing with ASP.NET MVC and have stumbled over the following situation. It feels a lot like a bug but if its not, an explanation would be appreciated :) The View contains pretty basic stuff <%=Html.DropDownList("MyList", ViewData["MyListItems"] as SelectList)%> <%=Html.TextBox("MyTextBox")%> When not using a model, the value and selected item are set as expected: //works fine public ActionResult MyAction(){ ViewData["MyListItems"] = new SelectList(items, "Value", "Text"); //items is an ienumerable of {Value="XXX", Text="YYY"} ViewData["MyList"] = "XXX"; //set the selected item to be the one with value 'XXX' ViewData["MyTextBox"] = "ABC"; //sets textbox value to 'ABC' return View(); } But when trying to load via a model, the textbox has the value set as expected, but the dropdown doesnt get a selected item set. //doesnt work public ActionResult MyAction(){ ViewData["MyListItems"] = new SelectList(items, "Value", "Text"); //items is an ienumerable of {Value="XXX", Text="YYY"} var model = new { MyList = "XXX", //set the selected item to be the one with value 'XXX' MyTextBox = "ABC" //sets textbox value to 'ABC' } return View(model); } Any ideas? My current thoughts on it are that perhaps when using a model, we're restricted to setting the selected item on the SelectList constructor instead of using the viewdata (which works fine) and passing the selectlist in with the model - which would have the benefit of cleaning the code up a little - I'm just wondering why this method doesnt work.... Many thanks for any suggestions

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  • WPF opening up exe program within WPF window

    - by SwiftLion
    Not sure if this is possible but is there a way to open up another program like notepad within the container of a WPF window? similiar to that of being able to open a web page using the webbrowser control? Basically I would like to open notepad or other exe but keep it constrained within the WPF window container using xaml/c# code? not sure if possible?

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  • Use LINQ and lambdas to put string in proper case

    - by Tobias Funke
    I have this function called ProperCase that takes a string, then converts the first letter in each word to uppercase. So ProperCase("john smith") will return "John Smith". Here is the code: public string ProperCase(string input) { var retVal = string.Empty; var words = input.Split(' '); foreach (var word in words) { if (word.Length == 1) { retVal += word.ToUpper(); } else if (word.Length > 1) { retVal += word.Substring(0, 1).ToUpper() + word.Substring(1).ToLower(); } retVal += ' '; } if (retVal.Length > 0) { retVal = retVal.Substring(0, retVal.Length - 1); } return retVal; } This code workds perfectly, but I'm pretty sure I can do it more elegantly with LINQ and lambdas. Can some please show me how?

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  • Question about design (inheritance, polymorphism)

    - by Dan
    Hi, I have a question about a problem I'm struggling with. Hope you can bear with me. Imagine I have an Object class representing the base class of a hierarchy of physical objects. Later I inherit from it to create an Object1D, Object2D and Object3D classes. Each of these derived classes will have some specific methods and attributes. For example, the 3d object might have functionality to download a 3d model to be used by a renderer. So I'd have something like this: class Object {}; class Object1D : public Object { Point mPos; }; class Object2D : public Object { ... }; class Object3D : public Object { Model mModel; }; Now I'd have a separate class called Renderer, which simply takes an Object as argument and well, renders it :-) In a similar way, I'd like to support different kinds of renderers. For instance, I could have a default one that every object could rely on, and then provide other specific renderers for some kind of objects: class Renderer {}; // Default one class Renderer3D : public Renderer {}; And here comes my problem. A renderer class needs to get an Object as an argument, for example in the constructor in order to retrieve whatever data it needs to render the object. So far so good. But a Renderer3D would need to get an Object3D argument, in order to get not only the basic attributes but also the specific attributes of a 3d object. Constructors would look like this: CRenderer(Object& object); CRenderer3D(Object3D& object); Now how do I specify this in a generic way? Or better yet, is there a better way to design this? I know I could rely on RTTI or similar but I'd like to avoid this if possible as I feel there is probably a better way to deal with this. Thanks in advance!

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  • Convert unstructured SVN folders to trunk/branches style and retain history?

    - by joelpt
    I have a SVN repository which is currently structured like so: /versions /1.0.0 /1.0.1 /1.0.2 /1.1.0 /(etc) What happened here is that when it was time to start a new release, a team member would make a copy of the previous version's folder and rename that folder; then add/commit that new folder into SVN. As a consequence, all of the revision history for a given version-folder is limited just to changes made in that version-folder. SVN thinks that each file in each version-folder was created anew at the time of version-folder creation. So what I'd like to do is convert this series of folders into a traditional trunk/branches/tag SVN structure. Is it possible to somehow "reconcile" the revision histories of each of these versioned folders back into one common revision-history tree?

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  • Getting Tap/Touch Position when selecting a TableView cell

    - by Omer
    Hi, hope to get some help here because this is something that really makes me mad... I have a view with a tableView, and when I tap a cell I want to present a popOver window pointing the arrow to the cell I tapped. the things that I think I need is: 1- the position of the cell in the screen (not in the view, because on large tables the Y value of the cell's rect could be grater than screen hight) or 2- a CGPoint or something similar that represents the point in the screen I tapped. I can't figured this out, and makes me really mad!!! Any help will very very very very usefull. Have a nice day.

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  • What does using RESTful URLs buy me?

    - by Spike Williams
    I've been reading up on REST, and I'm trying to figure out what the advantages to using it are. Specifically, what is the advantage to REST-style URLs that make them worth implementing over a more typical GET request with a query string? Why is this URL: http://www.parts-depot.com/parts/getPart?id=00345 Considered inferior to this? http://www.parts-depot.com/parts/00345 In the above examples (taken from here) the second URL is indeed more elegant looking and concise. But it comes at a cost... the first URL is pretty easy to implement in any web language, out of the box. The second requires additional code and/or server configuration to parse out values, as well as additional documentation and time spent explaining the system to junior programmers and justifying it to peers. So, my question is, aside from the pleasure of having URLs that look cool, what advantages do RESTful URLs gain for me that would make using them worth the cost of implementation?

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  • Making all variables accessible to namespace

    - by Gökhan Sever
    Hello, Say I have a simple function: def myfunc(): a = 4.2 b = 5.5 ... many similar variables ... I use this function one time only and I am wondering what is the easiest way to make all the variables inside the function accessible to my main name-space. Do I have to declare global for each item? or any other suggested methods? Thanks.

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  • iPhone SDK "loading" on Titanium Developer

    - by raulriera
    Hi, I have tried this question on the site of Titanium and several tweets to their account, but they either ignore me or refuse to answer. I want to start using their framework, but for some reason the iPhone SDK is always "loading" when in the "TEST & PACKAGE" tab. Have you guys found a fix for this? I have: Snow Leopard 10.6.3 Titanium Developer 1.2.1 iPhone SDK 3.2 All the certificates "blah blah" from Apple because I am able to test and deploy apps on my device using XCode. Help please :)

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  • WPF Skin Skinning Security Concerns

    - by Erik Philips
    I'm really new to the WPF in the .Net Framework (get that out of the way). I'm writing an application where the interface is very customizable by simply loading .xaml (at the moment a Page element) files into a frame and then mapping the controls via names as needed. The idea is to have a community of people who are interested in making skins, skin my application however they want (much like Winamp). Now the question arises, due to my lack of Xaml knowledge, is it possible to create malicious Xaml pages that when downloaded and used could have other embedded Iframes or other elements that could have embed html or call remote webpages with malicious content? I believe this could be the case. If this is the case then I two options; either I have an automated process that can remove these types of Xaml files by checking it’s elements prior to allowing download (which I would assume would be most difficult) or have a human review them prior to download. Are there alternatives I’m unaware of that could make this whole process a lot easier?

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  • Best code structure for arcade games

    - by user280454
    Hi, I've developed a few arcade games so far and have the following structure in almost all of them: I have 1 file which contains a class called kernel with the following functions: init() welcome_screen() menu_screen() help_Screen() play_game() end_screen() And another file, called Game, which basically calls all these functions and controls the flow of the game. Also, I have classes for different characters, whenever required. Is this a good code structure, or should I try having different files(classes) for different functions like welcome screen, playing, help screen, etc? As in, instead of including all the code for these things in 1 file, should I be having different classes for each one of them? The only problem I think it might cause is that I would need certain variables like score, characters, etc which are common to all of them, that's why I have all these functions in a Kernel class so that all these functions can use these variables.

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  • Search XDocument with LINQ with out knowing the Namespace

    - by BarDev
    Is there a way to search a XDocument without knowing the Namespace. I have a process that logs all soap requests and encrypts the sensitive data. I want to find any elements based on name. Something like, give me all elements where the name is CreditCard. I don't care what the namespace is. My problem seems to be with LINQ and requiring a xml namespace. I have other processes that retrieve values from XML, but I know the namespace for these other process. XDocument xDocument = XDocument.Load(@"C:\temp\Packet.xml"); XNamespace xNamespace = "http://CompanyName.AppName.Service.Contracts"; var elements = xDocument.Root.DescendantsAndSelf().Elements().Where(d = d.Name == xNamespace + "CreditCardNumber"); But what I really want, is to have the ability to search xml without knowing about namespaces, something like this: XDocument xDocument = XDocument.Load(@"C:\temp\Packet.xml"); var elements = xDocument.Root.DescendantsAndSelf().Elements().Where(d = d.Name == "CreditCardNumber") But of course this will not work be cause I do no have a namespace. BarDev

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  • How to surpress screen savers on Linux?

    - by Die in Sente
    I need to prevent the screen saver from running while my application is running. I know how to do this on the Windows versions, with SendInput calls, but I need to do something similar for Linux ports. It looks complicated, because ideally, I'd like something that would work on multiple Linux distros (SuSe, Red Hat, Ubunutu...) and it looks like there are at least 3 different screen-saver frameworks: xscreensaver, gnome-screensaver, and something else in KDE.

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  • Asp.Net : Web service throws "Thread was being aborted"

    - by Master Morality
    I have a web service that I call via ajax that requires the user to be logged in. in each method I want to check if the user is logged in and send a 403 code if they are not, however when I call a Response.End() I get the error "Thread was being aborted". What should I call instead? [WebMethod(true)] public string MyMethod() { if(!userIsLoggedIn) { HttpContext.Current.Response.StatusCode = 403; HttpContext.Current.Response.End(); } /* Do stuff that should not execute unless the user is logged in... */ ... }

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  • PHP regex help -- reverse search?

    - by Ian Silber
    So, I have a regex that searches for HTML tags and modifies them slightly. It's working great, but I need to do something special with the last closing HTML tag I find. Not sure of the best way to do this. I'm thinking some sort of reverse reg ex, but haven't found a way to do that. Here's my code so far: $html = "<div id="test"><p style="hello_world">This is a test.</p></div>"; $pattern = array('/<([A-Z][A-Z0-9]*)(\b[^>]*)>/i'); $replace = array('<tag>'); $html = preg_replace($pattern,$replace,$html); // Outputs: <tag><tag>This is a test</p></div> I'd like to replace the last occurance of "" with something special, say for example, "". Any ideas?

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  • VS 2010 ALM Whitepapers &ndash; link from Neno Loje

    - by johndoucette
    Overview of Visual Studio ALM Whitepapers by Microsoft Overview Visual Studio 2010 Quick Reference Guidance Installation, Configuration & Administration Team Foundation Installation Guide for Visual Studio Team System 2010 Administration Guide for Microsoft Visual Studio 2010 Team Foundation Server Visual Studio 2010 TFS Upgrade Guide Visual Studio 2010 and Team Foundation Server 2010 VM Factory TFS Integration Platform Visual Studio 2010 Licensing White Paper Requirements Visual Studio 2010 Team Foundation Server Requirements Management Guidance Version Control & Configuration Management Visual Studio TFS Branching Guide 2010 Some guide or whitepaper missing? Let me know!

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  • Should you disable page file with SSD?

    - by Pyrolistical
    I've been reading http://serverfault.com/questions/23621/any-benefit-or-detriment-from-removing-a-pagefile-on-an-8gb-ram-machine, and it has a lot of great information. But assuming you have more than enough ram, I think page file should be disabled on SSD to extend the life time. I know you would lose the core dump on crash, but not many people need that information. From my understand without a page file as you reach the limit of your ram that might trigger thrashing on disk. But for SSDs there is no concept of thrashing, reads are fast. What do you guys think?

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