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• What is better to have more LUNs or more Storages

  - by skomak

  Hi, what is better to have - more LUNs or more Storages. Actually i have 1 storage ESXi per 1 LUN so there are about 15 LUNs and 15 storages. Now there is a kind of problem because the LUNs have different space allocated so if i remove 2 LUNs f.e. 1 2 3 4 [x] 6 [x] 8 9 (like that) i can't make 1 LUN from 5 and 7 pieces of free diskspace on IBM storage array. It's a first argument to not have a lot of LUNs. If i had to make only a few LUNs (about 3) and inside some Storage from ESXi would it be a better idea? For example for expanding storage capacity? i look for good solutions. Thanks in advance.

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• 2D/Isometric map algorithm

  - by Icarus Cocksson

  First of all, I don't have much experience on game development but I do have experience on development. I do know how to make a map, but I don't know if my solution is a normal or a hacky solution. I don't want to waste my time coding things, and realise they're utterly crap and lose my motivation. Let's imagine the following map. (2D - top view - A square) X: 0 to 500 Y: 0 to 500 My character currently stands at X:250,Y:400, somewhere near center of 100px above bottom and I can control him with my keyboard buttons. LEFT button does X--, UP button does Y-- etc. This one is kid's play. I'm asking this because I know there are some engines that automate this task. For example, games like Diablo 3 uses an engine. You can pretty much drag drop a rock to map, and it is automatically being placed here - making player unable to pass through/detect the collision. But what the engine exactly does in the background? Generates a map like mine, places a rock at the center, and checks it like: unmovableObjects = array('50,50'); //we placed a rock at 50,50 location if(Map.hasUnmovableObject(CurrentPlayerX, CurrentPlayerY)) { //unable to move } else { //able to move } My question is: Is this how 2D/Isometric maps are being generated or there is a different and more complex logic behind them?

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• Kernel panic error

  - by cioby23

  We have a dedicated server with software RAID1 and one of the disk failed recently. The disk was replaced but after rebuilding the array and rebooting the server freezes with a Kernel Panic message No filesystem could mount root, tried: reiserfs ext3 ext2 cramfs msdos vfat iso9660 romfs fuseblk xfs Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(9,1) The filesystem on both disks is ext4. It seems the kernel can't load ext4 support. Is there any way to add ext4 support or do I need to recompile a new kernel again ? Interesting point that before disk replacement all was fine. The kernel is a stock kernel bzImage-2.6.34.6-xxxx-grs-ipv6-64 from our provider OVH Kind regards,

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• How can I perform 2D side-scroller collision checks in a tile-based map?

  - by bill

  I am trying to create a game where you have a player that can move horizontally and jump. It's kind of like Mario but it isn't a side scroller. I'm using a 2D array to implement a tile map. My problem is that I don't understand how to check for collisions using this implementation. After spending about two weeks thinking about it, I've got two possible solutions, but both of them have some problems. Let's say that my map is defined by the following tiles: 0 = sky 1 = player 2 = ground The data for the map itself might look like: 00000 10002 22022 For solution 1, I'd move the player (the 1) a complete tile and update the map directly. This make the collision easy because you can check if the player is touching the ground simply by looking at the tile directly below the player: // x and y are the tile coordinates of the player. The tile origin is the upper-left. if (grid[x][y+1] == 2){ // The player is standing on top of a ground tile. } The problem with this approach is that the player moves in discrete tile steps, so the animation isn't smooth. For solution 2, I thought about moving the player via pixel coordinates and not updating the tile map. This will make the animation much smoother because I have a smaller movement unit per frame. However, this means I can't really accurately store the player in the tile map because sometimes he would logically be between two tiles. But the bigger problem here is that I think the only way to check for collision is to use Java's intersection method, which means the player would need to be at least a single pixel "into" the ground to register collision, and that won't look good. How can I solve this problem?

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• CodePlex Daily Summary for Sunday, January 09, 2011

  CodePlex Daily Summary for Sunday, January 09, 2011Popular ReleasesEnhSim: EnhSim 2.2.10 BETA: 2.2.10 BETAThis release supports WoW patch 4.03a at level 85 To use this release, you must have the Microsoft Visual C++ 2010 Redistributable Package installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=A7B7A05E-6DE6-4D3A-A423-37BF0912DB84 To use the GUI you must have the .NET 4.0 Framework installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=9cfb2d51-5ff4-4491-b0e5-b386f32c0992 - Removed the part...TweetSharp: TweetSharp v2.0.0.0 - Preview 7: Documentation for this release may be found at http://tweetsharp.codeplex.com/wikipage?title=UserGuide&referringTitle=Documentation. Note: This code is currently preview quality. Preview 7 ChangesFixes the regression issue in OAuth from Preview 6 Preview 6 ChangesMaintenance release with user reported fixes Preview 5 ChangesMaintenance release with user reported fixes Third Party Library VersionsHammock v1.0.6: http://hammock.codeplex.com Json.NET 3.5 Release 8: http://json.codeplex.comExtended WPF Toolkit: Extended WPF Toolkit - 1.3.0: What's in the 1.3.0 Release?BusyIndicator ButtonSpinner ChildWindow ColorPicker - Updated (Breaking Changes) DateTimeUpDown - New Control Magnifier - New Control MaskedTextBox - New Control MessageBox NumericUpDown RichTextBox RichTextBoxFormatBar - Updated .NET 3.5 binaries and SourcePlease note: The Extended WPF Toolkit 3.5 is dependent on .NET Framework 3.5 and the WPFToolkit. You must install .NET Framework 3.5 and the WPFToolkit in order to use any features in the To...sNPCedit: sNPCedit v0.9d: added elementclient coordinate catcher to catch coordinates select a target (ingame) i.e. your char, npc or monster than click the button and coordinates+direction will be transfered to the selected row in the table corrected labels from Rot to Direction (because it is a vector)AutoLoL: AutoLoL v1.5.2: Implemented the Auto Updater Fix: Your settings will no longer be cleared with new releases of AutoLoL The mastery Editor and Browser now have their own tabs instead of nested tabs The Browser tab will only show the masteries matching ALL filters instead of just one Added a 'Browse' button in the Mastery Editor tab to open the Masteries Directory The Browser tab now shows a message when there are no mastery files in the Masteries Directory Fix: Fixed the Save As dialog again, for ...Ionics Isapi Rewrite Filter: 2.1 latest stable: V2.1 is stable, and is in maintenance mode. This is v2.1.1.25. It is a bug-fix release. There are no new features. 28629 29172 28722 27626 28074 29164 27659 27900 many documentation updates and fixes proper x64 build environment. This release includes x64 binaries in zip form, but no x64 MSI file. You'll have to manually install x64 servers, following the instructions in the documentation.StyleCop for ReSharper: StyleCop for ReSharper 5.1.14980.000: A considerable amount of work has gone into this release: Huge focus on performance around the violation scanning subsystem: - caching added to reduce IO operations around reading and merging of settings files - caching added to reduce creation of expensive objects Users should notice condsiderable perf boost and a decrease in memory usage. Bug Fixes: - StyleCop's new ObjectBasedEnvironment object does not resolve the StyleCop installation path, thus it does not return the correct path ...VivoSocial: VivoSocial 7.4.1: New release with bug fixes and updates for performance.SSH.NET Library: 2011.1.6: Fixes CommandTimeout default value is fixed to infinite. Port Forwarding feature improvements Memory leaks fixes New Features Add ErrorOccurred event to handle errors that occurred on different thread New and improve SFTP features SftpFile now has more attributes and some operations Most standard operations now available Allow specify encoding for command execution KeyboardInteractiveConnectionInfo class added for "keyboard-interactive" authentication. Add ability to specify bo....NET Extensions - Extension Methods Library for C# and VB.NET: Release 2011.03: Added lot's of new extensions and new projects for MVC and Entity Framework. object.FindTypeByRecursion Int32.InRange String.RemoveAllSpecialCharacters String.IsEmptyOrWhiteSpace String.IsNotEmptyOrWhiteSpace String.IfEmptyOrWhiteSpace String.ToUpperFirstLetter String.GetBytes String.ToTitleCase String.ToPlural DateTime.GetDaysInYear DateTime.GetPeriodOfDay IEnumberable.RemoveAll IEnumberable.Distinct ICollection.RemoveAll IList.Join IList.Match IList.Cast Array.IsNullOrEmpty Array.W...EFMVC - ASP.NET MVC 3 and EF Code First: EFMVC 0.5- ASP.NET MVC 3 and EF Code First: Demo web app ASP.NET MVC 3, Razor and EF Code FirstVidCoder: 0.8.0: Added x64 version. Made the audio output preview more detailed and accurate. If the chosen encoder or mixdown is incompatible with the source, the fallback that will be used is displayed. Added "Auto" to the audio mixdown choices. Reworked non-anamorphic size calculation to work better with non-standard pixel aspect ratios and cropping. Reworked Custom anamorphic to be more intuitive and allow display width to be set automatically (Thanks, Statick). Allowing higher bitrates for 6-ch....NET Voice Recorder: Auto-Tune Release: This is the source code and binaries to accompany the article on the Coding 4 Fun website. It is the Auto Tuner release of the .NET Voice Recorder application.BloodSim: BloodSim - 1.3.2.0: - Simulation Log is now automatically disabled and hidden when running 10 or more iterations - Hit and Expertise are now entered by Rating, and include option for a Racial Expertise bonus - Added option for boss to use a periodic magic ability (Dragon Breath) - Added option for boss to periodically Enrage, gaining a Damage/Attack Speed buffAllNewsManager.NET: AllNewsManager.NET 1.2.1: AllNewsManager.NET 1.2.1 It is a minor update from version 1.2xUnit.net - Unit Testing for .NET: xUnit.net 1.7 Beta: xUnit.net release 1.7 betaBuild #1533 Important notes for Resharper users: Resharper support has been moved to the xUnit.net Contrib project. Important note for TestDriven.net users: If you are having issues running xUnit.net tests in TestDriven.net, especially on 64-bit Windows, we strongly recommend you upgrade to TD.NET version 3.0 or later. This release adds the following new features: Added support for ASP.NET MVC 3 Added Assert.Equal(double expected, double actual, int precision)...Json.NET: Json.NET 4.0 Release 1: New feature - Added Windows Phone 7 project New feature - Added dynamic support to LINQ to JSON New feature - Added dynamic support to serializer New feature - Added INotifyCollectionChanged to JContainer in .NET 4 build New feature - Added ReadAsDateTimeOffset to JsonReader New feature - Added ReadAsDecimal to JsonReader New feature - Added covariance to IJEnumerable type parameter New feature - Added XmlSerializer style Specified property support New feature - Added ...ASP .NET MVC CMS (Content Management System): Atomic CMS 2.1.2: Atomic CMS 2.1.2 release notes Atomic CMS installation guide N2 CMS: 2.1: N2 is a lightweight CMS framework for ASP.NET. It helps you build great web sites that anyone can update. Major Changes Support for auto-implemented properties ({get;set;}, based on contribution by And Poulsen) All-round improvements and bugfixes File manager improvements (multiple file upload, resize images to fit) New image gallery Infinite scroll paging on news Content templates First time with N2? Try the demo site Download one of the template packs (above) and open the proj...Mobile Device Detection and Redirection: 0.1.11.10: IMPORTANT CHANGESThis release changes the way some WURFL capabilities and attributes are exposed to .NET developers. If you cast MobileCapabilities to return some values then please read the Release Note before implementing this release. The following code snippet can be used to access any WURFL capability. For instance, if the device is a tablet: string capability = Request.Browser["is_tablet"]; SummaryNew attributes have been added to the redirect section: originalUrlAsQueryString If se...New Projects[OOBL] Projekt: Projekt iz kolegija Objektno Oblikovanje na Fakultetu Elektrotehnike i Racunarstva u Zagrebu.Aikido Glossary Reader: The Aikido Glossary Reader application makes it easier for Aikido students to search for Japanese terms used in martial arts training.AsyncFunc: AsyncFunc makes it easy to implement Event-based Asynchronous Pattern in .NET.BeijingAgricultureScience: ???????????BizTalk 5010 999 Generation: Create 5010 999 acknowledgement from the default 997 Generated by BizTalk ServerCheck if Knowledge Base fix is installed script: A handy script that checks if a knowledge base fix is installed or not.Coproject - rich project management: Coproject is a sample Silverlight application built on WCF RIA Services and Caliburn.Micro framework. It should demonstrate typical scenarios in business applications.DeskNote: DeskNote, makes taking and displaying a notes a lot easier. Have your notes on your desktop, write your notes in a text file and it will be automatically displayed on the desktop. DriveBackup: Are you tired of losing data? And do you sometimes forget to backup your data? Then this program is right for you, one-time setup with each new removable disk and after that Drive Backup instantly backs up your data in the background, without you pushing a button.ELSEngine XNA Game OS Engine: XNA Game Operating System Engine, designed to handle and make easy to use Interface, Interface assets, game screens, menus, controls, and more. Designed to be adaptable to XBOX or Windows, and to ANY style game.FermaProject: Team Ferma ProjectHalfNetworkNET: HalfNetworkNET makes it easier for <target user group> to <activity>. You'll no longer have to <activity>. It's developed in C++/CLILFS Record: LFS Record is a camera animation and video recording tool for Live for Speed users. It doesn't replace programs like Fraps 100%, but in most cases you'll find LFS Record allows a lot more freedom and control. It's developed in C# using WPF .net 4.MPC HC Web remote: A Web interface for Media Player Classic Home Cinema. Designed especialy for smart phones. Tested on Nokia 5800, but in theory it works on all smart phones with wifi & a browser.MSMS2CMP: Very simple application to swap particular strings (MSMS and CMPD number) in .mgf files (results from Mascot search engine used to identify proteins by mass spectrometry data). This might be a kind of example of using Regex and Text File I/OMy Now Playing to Twitter: A Simple WinForm Program that can get what user is playing in Winamp and send a status to Twitter. It's wrote in VB.Net but some source code is port of MiniTwitter(http://minitwitter.codeplex.com)and uses tagLib-sharp library(https://github.com/mono/taglib-sharp)RPM Header for .NET: RPM Header for .NET allows a developer to access the headers of RPM Package Manager files. It's developed in C#.SilverMenu: SilverMenu brings some of the menu functionality of Silverlight for Windows Phone 7 to the XNA world.Smartgrid Smartmeter GRYD: The GRYD smartgrid and Smartmeter project shows features and capabilities like Demand Response, Smart Home Appliance Load Curtailments, DMS integration with SCADA etc. GRYD, Gryd.org is to teach you the technology, this is only for personal use and not commercial use.WakeMeQt: WakeMeQt is a smart alarm for the Nokia n810 (and probably n800) internet tablets. Using a Nintendo Wii remote as the sensor it monitors your movements during sleep and chooses the optimal time to wake you. It's developed in C++ using the Qt framework.WPF SplitButton & MenuButton: This WPF SplitButton and MenuButton implementation aims to be more robust and visual attractive than the other WPF split buttons available on CodePlex and elsewhere. The code is based on David Anson's implementation made available on his blog.Y2XMas: Merry Chirstmas - Happy New Year 2011 software

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• Z Order in 2D with orthographic projection and texture atlas

  - by Carbon Crystal

  I am working with a 2D game in OpenGL ES and have a question about z-order together with a texture atlas. I am using an orthographic projection because I want pixel-perfect rendering of 2D sprites, however from what I can determine the draw order is really the only thing that will determine which textures (sprites) appear above or below their neighbors. That is, the "z-index" is a function of the order in which the textures are drawn as opposed to the z coordinate on the vertex array being drawn. So.. I have a texture atlas to save binding multiple textures for each draw call but this immediately creates a problem if there is more than one atlas in play. If I need to draw textures from more than one atlas (typically the case if I have too many sprites to fit in a single atlas of a reasonable size), then I can't maintain a "draw order" across atlases unless I want to bind/unbind the atlas textures more than once.. which kinda defeats the purpose. Does anyone have any clues as to what the best approach is here? Currently I'm running under an assumption that I will have to declare different fixed "depths" (e.g foreground, background etc) in my 2D scene and assume that the z-order for sprites at a given depth is the same. Then I can have as many atlases as I need at each depth and simply draw the depths in order (along with their associated atlases) I'd love to hear what other people are doing.

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• Dependency injection: what belongs in the constructor?

  - by Adam Backstrom

  I'm evaluating my current PHP practices in an effort to write more testable code. Generally speaking, I'm fishing for opinions on what types of actions belong in the constructor. Should I limit things to dependency injection? If I do have some data to populate, should that happen via a factory rather than as constructor arguments? (Here, I'm thinking about my User class that takes a user ID and populates user data from the database during construction, which obviously needs to change in some way.) I've heard it said that "initialization" methods are bad, but I'm sure that depends on what exactly is being done during initialization. At the risk of getting too specific, I'll also piggyback a more detailed example onto my question. For a previous project, I built a FormField class (which handled field value setting, validation, and output as HTML) and a Model class to contain these fields and do a bit of magic to ease working with fields. FormField had some prebuilt subclasses, e.g. FormText (<input type="text">) and FormSelect (<select>). Model would be subclassed so that a specific implementation (say, a Widget) had its own fields, such as a name and date of manufacture: class Widget extends Model { public function __construct( $data = null ) { $this->name = new FormField('length=20&label=Name:'); $this->manufactured = new FormDate; parent::__construct( $data ); // set above fields using incoming array } } Now, this does violate some rules that I have read, such as "avoid new in the constructor," but to my eyes this does not seem untestable. These are properties of the object, not some black box data generator reading from an external source. Unit tests would progressively build up to any test of Widget-specific functionality, so I could be confident that the underlying FormFields were working correctly during the Widget test. In theory I could provide the Model with a FieldFactory() which could supply custom field objects, but I don't believe I would gain anything from this approach. Is this a poor assumption?

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• Node.JS testing with Jasmine, databases, and pre-existing code

  - by Jim Rubenstein

  I've recently built the start of a core system which is likely going turn into a monster product. I'm building the system with node.js, and decided after I got a small base built, that It'd be a great idea to start using some sort of automated test suite to test the application. I decided to use jasmine, as it seems pretty solid and has a lot of features for stubbing spying and mocking methods and classes. The application has a lot of external data stores and api access (kestrel, mysql, mongodb, facebook, and more). My issue is, I've got a good amount of code written that I want to start testing - as it represents the underpinnings of the application. What are the best practices for testing methods/classes that access external APIs that I may or may not have control over? As an example, I have a data structure that fetches a bunch of data from a MySQL database. I want to test the method that retrieves the data; and I'm not sure how to go about it. I could test the fetch method which is supposed to return an array of objects, but to isolate the method from the database, I need to define my own fixture data. So what I end up doing is stubbing the mysql execution, and returning a static dataset. So, I end up writing a function that returns the dataset that makes my test pass. That doesn't seem to actually test the code, other than verifying a method is being called. I know this is kind of abstract and vague, it seems that the idea of testing is very much abstract though, so hopefully someone has some experience and can guide me in the right direction. Any advice, or reading I can do is more than welcomed. Thanks in advance.

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• Apple RAID configuration vs Hardware RAID

  - by James Hill

  I am researching external HDD's capable or RAID 1 to store a large amount of video content during overseas filming. After filming, the content will be brought back to the office and offloaded onto our storage server. After doing some research, I've found that I can buy an external drive with a built in RAID controller, or I can buy an external drive, with 2 HDD's, that I can configure in a RAID 1 array using the OS. RAID 1 is what we're looking for. I've done some reading on software RAID vs. hardware RAID, but the resources I've found don't discuss performance as it relates to video content or what happens to a software RAID when the computer dies. Question 1: Will the hardware RAID be more performant when dealing with large video files? Question 2: If the mac dies, does my RAID die with it (will my data be accessible on another mac)?

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• Reflection and the params Keyword

  - by Robert May

  I’ve had to look this up a couple of times, and there’s not much out there, so I end up guessing the same answer over and over. When using MethodBase.GetParameters() to get an array of ParameterInfo object, I often want to get a count of the number of parameters that are out, optional, params, etc.  For out and optional, you can simply check ParameterInfo.IsOut or ParameterInfo.IsOptional or any number of other “Attributes”. However, for params, there isn’t a property on ParameterInfo.  Instead, you have to do this: info.GetCustomAttributes(typeof(ParamArrayAttribute), true) This will get you a set of all of the attributes that are the ParamArrayAttribute, which you can then turn into a linq statement that looks like this: methodParameters.Count(info => info.GetCustomAttributes(typeof(ParamArrayAttribute), true).Count() > 0); Which, assuming that methodParameters is the result of MethodBase.GetParameters, will give you a count of the number of parameters that have the params keyword.  Of course, there can be only one, but who’s counting! Now, hopefully, the next time I try to look this up, my own blog will get the values. Technorati Tags: Reflection

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• Microsoft ADO.NET 4 Step by Step

  - by Sahil Malik

  Ad:: SharePoint 2007 Training in .NET 3.5 technologies (more information). Many years ago, I wrote Pro ADO.NET 2.0. I still think that in the plethora of new data access technologies that have come out since, the basic core ADO.NET fundamentals are still every developer must know, and sadly they do not know. So for some crazy reason, I still see every project make the same data access related mistakes over and over again. Anyway, the challenge is that on top of the core ADO.NET fundamentals, there is a vast array of other new technologies you must learn. The important of which is Entity Framework. So, I was asked to, and I was pleased to be the technical reviewer for Microsoft ADO.NET 4, Step by Step, by Tim Patrick. This book introduces the reader not just to the basic ADO.NET principles, but also Entity Framework, LINQ to SQL, and WCF Data Services. So what you may ask is a SharePoint guy like me doing with such interest in ADO.NET land? Well, that’s what the other side says, what is a hardcore data access sorta guy doing in SharePoint land? :). I have authored/co-authored 4 books so far on data access (1,2,3,4), and one on pure SharePoint, and now one on SharePoint 2010 BI. These are very intertwined topics. And LINQ to SQL and LINQ to SharePoint are almost copy paste of each other. WCF Data services are literally the same in both. And many Entity Framework concepts also apply within SharePoint. So there, I did these both for “interest” reasons. Comment on the article ....

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• Random World Generation

  - by Alex Larsen

  I'm making a game like minecraft (although a different idea) but I need a random world generator for a 1024 block wide and 256 block tall map. Basically so far I have a multidimensional array for each layer of blocks (a total of 262,114 blocks). This is the code I have now: Block[,] BlocksInMap = new Block[1024, 256]; public bool IsWorldGenerated = false; Random r = new Random(); private void RunThread() { for (int BH = 0; BH <= 256; BH++) { for (int BW = 0; BW <= 1024; BW++) { Block b = new Block(); if (BH >= 192) { } BlocksInMap[BW, BH] = b; } } IsWorldGenerated = true; } public void GenWorld() { new Thread(new ThreadStart(RunThread)).Start(); } I want to make tunnels and water but the way blocks are set is like this: Block MyBlock = new Block(); MyBlock.BlockType = Block.BlockTypes.Air; How would I manage to connect blocks so the land is not a bunch of floating dirt and stone?

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• OOP for unit testing : The good, the bad and the ugly

  - by Jeff

  I have recently read Miško Hevery's pdf guide to writing testable code in which its stated that you should limit your classes instanciations in your constructors. I understand that its what you should do because it allow you to easily mock you objects that are send as parameters to your class. But when it comes to writing actual code, i often end up with things like that (exemple is in PHP using Zend Framework but I think it's self explanatory) : class Some_class { private $_data; private $_options; private $_locale; public function __construct($data, $options = null) { $this->_data = $data; if ($options != null) { $this->_options = $options; } $this->_init(); } private function _init() { if(isset($this->_options['locale'])) { $locale = $this->_options['locale']; if ($locale instanceof Zend_Locale) { $this->_locale = $locale; } elseif (Zend_Locale::isLocale($locale)) { $this->_locale = new Zend_Locale($locale); } else { $this->_locale = new Zend_Locale(); } } } } Acording to my understanding of Miško Hevery's guide, i shouldn't instanciate the Zend_Local in my class but push it through the constructor (Which can be done through the options array in my example). I am wondering what would be the best practice to get the most flexibility for unittesing this code and aswell, if I want to move away from Zend Framework. Thanks in advance

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• How to expose game data in the game without a singelton?

  - by zardon

  I'm quite new to cocos2d and games programming, and am currently I am writing a game that is currently in Prototype stage. Everything is going okay, but I've realized a potentially big problem and I am not sure how to solve it. I am using a singelton to store a bunch of arrays for everything, a global list of planets, a global list of troops, a global list of products, etc. And only now I'm realizing that all of this will be in memory and this is the wrong way to do it. I am not storing files or anything on the disk just yet, with exception to a save/load state, which is a capture of everything. My game makes use of a map which allows you to select a planet, then it will give you a breakdown of that planets troops and resources, Lets use this scenario: My game has 20 planets. On which you can have 20 troops. Straight away that's an array of 400! This does not add the NPC, which is another 10. So, 20x10 = 200 So, now we have 600 all in arrays inside a Singelton. This is obviously very bad, and very wrong. Especially as the game scales in the amount of data. But I need to expose pretty much everything, especially on the map page, and I am not sure how else to do it. I've been told that I can use a controller for the map page which has the information I need for each planet, and other controllers for other items I require global display for. I've also thought about storing each planet's data in a save file, using initWithCoder however there could be a boatload of files on the user's device? I really don't want to use a database, mainly because I would need to translate NSObjects and non-NSObjects like CGRects and CGPoints and Colors into/from SQL. I am open to other ideas on how to store and read game data to prevent using a singelton to store everything, everywhere. Thanks for your time.

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• Self-referencing anonymous closures: is JavaScript incomplete?

  - by Tom Auger

  Does the fact that anonymous self-referencing function closures are so prevelant in JavaScript suggest that JavaScript is an incomplete specification? We see so much of this: (function () { /* do cool stuff */ })(); and I suppose everything is a matter of taste, but does this not look like a kludge, when all you want is a private namespace? Couldn't JavaScript implement packages and proper classes? Compare to ActionScript 3, also based on EMACScript, where you get package com.tomauger { import bar; class Foo { public function Foo(){ // etc... } public function show(){ // show stuff } public function hide(){ // hide stuff } // etc... } } Contrast to the convolutions we perform in JavaScript (this, from the jQuery plugin authoring documentation): (function( $ ){ var methods = { init : function( options ) { // THIS }, show : function( ) { // IS }, hide : function( ) { // GOOD }, update : function( content ) { // !!! } }; $.fn.tooltip = function( method ) { // Method calling logic if ( methods[method] ) { return methods[ method ].apply( this, Array.prototype.slice.call( arguments, 1 )); } else if ( typeof method === 'object' || ! method ) { return methods.init.apply( this, arguments ); } else { $.error( 'Method ' + method + ' does not exist on jQuery.tooltip' ); } }; })( jQuery ); I appreciate that this question could easily degenerate into a rant about preferences and programming styles, but I'm actually very curious to hear how you seasoned programmers feel about this and whether it feels natural, like learning different idiosyncrasies of a new language, or kludgy, like a workaround to some basic programming language components that are just not implemented?

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• Top 25 security issues for developers of web sites

  - by BizTalk Visionary

  Sourced from: CWE This is a brief listing of the Top 25 items, using the general ranking. NOTE: 16 other weaknesses were considered for inclusion in the Top 25, but their general scores were not high enough. They are listed in the On the Cusp focus profile. Rank Score ID Name [1] 346 CWE-79 Failure to Preserve Web Page Structure ('Cross-site Scripting') [2] 330 CWE-89 Improper Sanitization of Special Elements used in an SQL Command ('SQL Injection') [3] 273 CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') [4] 261 CWE-352 Cross-Site Request Forgery (CSRF) [5] 219 CWE-285 Improper Access Control (Authorization) [6] 202 CWE-807 Reliance on Untrusted Inputs in a Security Decision [7] 197 CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') [8] 194 CWE-434 Unrestricted Upload of File with Dangerous Type [9] 188 CWE-78 Improper Sanitization of Special Elements used in an OS Command ('OS Command Injection') [10] 188 CWE-311 Missing Encryption of Sensitive Data [11] 176 CWE-798 Use of Hard-coded Credentials [12] 158 CWE-805 Buffer Access with Incorrect Length Value [13] 157 CWE-98 Improper Control of Filename for Include/Require Statement in PHP Program ('PHP File Inclusion') [14] 156 CWE-129 Improper Validation of Array Index [15] 155 CWE-754 Improper Check for Unusual or Exceptional Conditions [16] 154 CWE-209 Information Exposure Through an Error Message [17] 154 CWE-190 Integer Overflow or Wraparound [18] 153 CWE-131 Incorrect Calculation of Buffer Size [19] 147 CWE-306 Missing Authentication for Critical Function [20] 146 CWE-494 Download of Code Without Integrity Check [21] 145 CWE-732 Incorrect Permission Assignment for Critical Resource [22] 145 CWE-770 Allocation of Resources Without Limits or Throttling [23] 142 CWE-601 URL Redirection to Untrusted Site ('Open Redirect') [24] 141 CWE-327 Use of a Broken or Risky Cryptographic Algorithm [25] 138 CWE-362 Race Condition Cross-site scripting and SQL injection are the 1-2 punch of security weaknesses in 2010. Even when a software package doesn't primarily run on the web, there's a good chance that it has a web-based management interface or HTML-based output formats that allow cross-site scripting. For data-rich software applications, SQL injection is the means to steal the keys to the kingdom. The classic buffer overflow comes in third, while more complex buffer overflow variants are sprinkled in the rest of the Top 25.

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• Webserver not giving the correct response on CURL and other httprequest methods [migrated]

  - by Maxim

  I am trying to make a REST request to a external webserver by using this code <?php $user = 'USER'; $pass = 'PASS'; $data = "MYDATA" $ch = curl_init('URL'); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_POSTFIELDS, $data); curl_setopt($ch, CURLOPT_HTTPHEADER, array( 'Content-Type: application/json', 'Content-Length: ' . strlen($data)) ); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($ch, CURLOPT_VERBOSE, true); if(!($res = curl_exec($ch))) { echo('[cURL Failure] ' . curl_error($ch)); } curl_close($ch); echo($res); Now this is a CURL request, however i tried different methods to test my result and they all give me a 403 forbidden error response that i get from the webserver, however i do get a 200 response when i run it on any other webserver (localhost, webserver2, ...) Therefore i think there is something wrong with my webserver and it might be disallowing/caching the post parameters that i provide because sometimes it returns a 200 response but most of the times it returns the 403. This is the response i get : HTTP/1.1 403 Forbidden Accept-Ranges: bytes Content-Type: application/json; charset=UTF-8 Date: Sat, 26 Oct 2013 13:56:37 GMT Server: Restlet-Framework/2.1.3 Vary: Accept-Charset, Accept-Encoding, Accept-Language, Accept Content-Length: 77 Connection: keep-alive {"error":"ForbiddenOperationException","errorMessage":"Invalid credentials."} It says Invalid credentials however i provide the correct credentials and i can confirm them because it is working on other servers. Since this is a crucial part of my script that i use for clients to register i assume that there is something wrong with the post parameters. I am running cpanel and uninstalled the following already: - varnish - apachebooster i also recompiled php already and enabled curl and its dependencies but nothing seems to resolve my problem. If more information is required then don't hesitate to ask me in the comments i will respond very quickly as i really need this. any help is appreciated. Kind regards Maxim

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• NVRAM for journals on Linux?

  - by symcbean

  I've been thinking about ways of speeding up disk I/O, and one of the bottlenecks I keep coming back to is the journal. There's an obvious benefit to using an SSD for the journal - over and above just write caching unless of course I just disable the journal with the write cache (after all devicemapper doesn't seem to support barriers). In order to get the benefits from using a BB write cache on the controller, then I'd need to disable journalling - but then the OS should try to fsck the system after an outage. Of course if the OS knows what's in the batter-backed memory then it could use it as the journal - but that means it must be exposed as a block device and only be under the control of the operating system. However I've not been able to find a suitable low-cost device (no, write-levelling for Flash is not adequate for a journal, at least one which uses Smartmedia). While there's no end of flash devices, disk/array controllers with BB write caches, so far I've not found anything which just gives me non-volatile memory addressable as a block storage device.

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• Zero-channel RAID for High Performance MySQL Server (IBM ServeRAID 8k) : Any Experience/Recommendation?

  - by prs563

  We are getting this IBM rack mount server and it has this IBM ServeRAID8k storage controller with Zero-Channel RAID and 256MB battery backed cache. It can support RAID 10 which we need for our high performance MySQL server which will have 4 x 15000K RPM 300GB SAS HDD. This is mission-critical and we want as much bandwidth and performance. Is this a good card or should we replace with another IBM RAID card? IBM ServeRAID 8k SAS Controller option provides 256 MB of battery backed 533 MHz DDR2 standard power memory in a fixed mounting arrangement. The device attaches directly to IBM planar which can provide full RAID capability. Manufacturer IBM Manufacturer Part # 25R8064 Cost Central Item # 10025907 Product Description IBM ServeRAID 8k SAS - Storage controller (zero-channel RAID) - RAID 0, 1, 5, 6, 10, 1E Device Type Storage controller (zero-channel RAID) - plug-in module Buffer Size 256 MB Supported Devices Disk array (RAID) Max Storage Devices Qty 8 RAID Level RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, RAID 1E Manufacturer Warranty 1 year warranty

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• S.M.A.R.T - Predictive Failure Count

  - by Bastien974

  I'm monitoring my IBM ServeRAID M5015 controller for RAID status with MegaCLI, I have this on one of the disk : Enclosure Device ID: 252 Slot Number: 6 Enclosure position: 0 Device Id: 14 Sequence Number: 2 Media Error Count: 32 Other Error Count: 0 Predictive Failure Count: 18 Last Predictive Failure Event Seq Number: 8119 PD Type: SAS Raw Size: 279.396 GB [0x22ecb25c Sectors] Non Coerced Size: 278.896 GB [0x22dcb25c Sectors] Coerced Size: 278.464 GB [0x22cee000 Sectors] Firmware state: Online, Spun Up SAS Address(0): 0x5000c50042c319c9 SAS Address(1): 0x0 Connected Port Number: 5(path0) Inquiry Data: IBM-ESXSST9300653SS B6336XN04HC10525B633 IBM FRU/CRU: 81Y9671 FDE Capable: Not Capable FDE Enable: Disable Secured: Unsecured Locked: Unlocked Needs EKM Attention: No Foreign State: None Device Speed: 6.0Gb/s Link Speed: 6.0Gb/s Media Type: Hard Disk Device Drive: Not Certified Drive Temperature :33 Celsius What does this mean exactly ? I can't find an exact description, is there a way to have more details ? The RAID array has the Optimal state. Media Error Count: 32 Predictive Failure Count: 18 Is there a way through the CLI to power-on the front LED so I physically know which disk I need to replace ?

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• Drupal 7 Advice Needed: "Portal" Creation

  - by WernerCD

  Question: What is the best game plan for building what I want. I'm rebuilding the company intranet and am trying to get our "Portals" system re-created in Drupal. I'm trying to learn Panels, because thats what I think would do this, but I just can't seem to get it working. Menu at top, drop down lists for various webpages, tools, internal applications... and Department Portals. When you click on a department portal, you get the same menu at top... and on the main part of the page you have a menu on the left, with content on the right. Menu stays on the left, content loads next to it. Each Portal has its own menu and content (least of which is "Home"). Ultimately, I'd like to be able to say - users with role "Foo" can add/edit/delete Portal Bar. - Each Portal starts with a "Home" - Each Portal has its own Menu tree's. (Picture 2 above has a < ul for video tutorials that would be a second level menu. So more than one deep.) - Content on the right side of the portal should be flexible (Video, PDF via fileviewer, etc) - Portal Bar should have its own Folder to contain it's content. I'm trying to do this in Panels, but I can't seem to put the pieces together in my mind and in practice. I hope I'm making sense, because the dizzying array of stuff is killing me lol.

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• Would it be a good idea to work on letting people add arrays of numbers in javascript?

  - by OneThreeSeven

  I am a very mathematically oriented programmer, and I happen to be doing a lot of java script these days. I am really disappointed in the math aspects of javascript: the Math object is almost a joke because it has so few methods you can't use ^ for exponentiation the + operator is very limited, you cant add array's of numbers or do scalar multiplication on arrays Now I have written some pretty basic extensions to the Math object and have considered writing a library of advanced Math features, amazingly there doesn't seem to be any sort of standard library already out even for calculus, although there is one for vectors and matricies I was able find. The notation for working with vectors and matricies is really bad when you can't use the + operator on arrays, and you cant do scalar multiplication. For example, here is a hideous expression for subtracting two vectors, A - B: Math.vectorAddition(A,Math.scalarMultiplication(-1,B)); I have been looking for some kind of open-source project to contribute to for awhile, and even though my C++ is a bit rusty I would very much like to get into the code for V8 engine and extend the + operator to work on arrays, to get scalar multiplication to work, and possibly to get the ^ operator to work for exponentiation. These things would greatly enhance the utility of any mathematical javascript framework. I really don't know how to get involved in something like the V8 engine other than download the code and start working on it. Of course I'm afraid that since V8 is chrome specific, that without browser cross-compatibility a fundamental change of this type is likely to be rejected for V8. I was hoping someone could either tell me why this is a bad idea, or else give me some pointers about how to proceed at this point to get some kind of approval to add these features. Thanks!

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• How to get partition information from non-booting server?

  - by gravyface

  Need to manually rebuild a mirrored array on a server and am in the process of reinstalling SBS 2003 on it. However, it's a Dell server, and know that there's the Dell FAT32 diagnostics partition, a system partition, and a data partition, but do not know the size of each. Planning on reinstalling SBS 2003, all applications on the server, and then doing a System State restore, but figured that not having the correct partitions will cause some grief: am I right? Almost thinking that the size of the partitions shouldn't matter, but not positive. Question: should I care about the size of the partition? If so, how can I get this partition information from a non-booting drive? We have an Acronis image of the one working disk and the partitions are mounted/viewable in Explorer on a workstation, but I'm not sure where the Logical Disk Manager/Disk Management data is stored and/or if there's a way to retrieve it without having a working Windows installation.

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• Clients with multiple proxy and multithreading callbacks

  - by enzom83

  I created a sessionful web service using WCF, and in particular I used the NetTcpBinding binding. In addition to methods to initiate and terminate a session, other methods allow the client to send to one or more tasks to be performed (the results are returned via callback, so the service is duplex), but they also allow you to know the status of the service. Assuming you activate the same service on multiple endpoints, and assuming that the client knows these endpoints (for example, it could maintain a List of endpoints), the client should connect with one or more replicas of the same service. The client periodically updates the status of the service, so when it needs to perform a new task (the task is submitted by the user via UI), it selects the service currently less loaded and sends the task to it. Periodically, the client also initiates a maintenance procedure in order to disconnect from one or more overloaded service and in order to connect with new services. I created a client proxy using the svcutil tool. I wish each proxy can be used simultaneously by different threads, for example, in addition to the thread that submits the tasks using a proxy, there are also the following two threads which act periodically: a thread that periodically sends a request to the service in order to obtain the updated state; a thread that periodically selects a proxy to close and instantiates a new proxy to replace the closed one. To achieve these objectives, is it sufficient to create an array of proxies and manage their opening and closing in separate threads? I think I read that the proxy method calls are thread safe, so I would not need to perform a lock before requesting updates to the service. However, when the maintenance procedure (which is activated on its own thread) decides to close a proxy, should I perform a lock? Finally, each proxy is also associated with an object that implements the callback interface for the service: are the callbacks (invoked on the client) executed on different threads on the client? I would like to wrap the management of the proxy in one or more classes so that it can then easily manage within a WPF application.

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• Restoring GRUB2 on Software RAID 0 after Windows 7 wiped it using LiveCD

  - by unknownthreat

  I have installed Ubuntu 10.10 on my system. However, I need to install Windows 7 back, and I expect that it would alter GRUB and it did. Right now, my partition on my Software RAID 0 looks like this: nvidia_acajefec1 is Ubuntu 10.10 and nvidia_acajefec3 is Windows 7. I've been following some guides around and I am always stuck at GRUB not able to detect the usual RAID content. I've tried running: sudo grub > root (hd0,0) GRUB complains it couldn't find my hard disk. So I tried: find (hd0,0) And it complains that it couldn't find anything. So I tried: find /boot/grub/stage1 It said "file not found". Here's the text from the console: ubuntu@ubuntu:~$ grub Probing devices to guess BIOS drives. This may take a long time. [ Minimal BASH-like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists the possible completions of a device/filename. ] grub> root (hd0,0) root (hd0,0) Error 21: Selected disk does not exist grub> find /boot/grub/stage1 find /boot/grub/stage1 Error 15: File not found Fortunately, I got one person suggesting that what I've been trying to do is for GRUB Legacy, not GRUB2. So I went to the suggested website, ** (http://grub.enbug.org/Grub2LiveCdInstallGuide) **try to look around, and try: ubuntu@ubuntu:~$ sudo fdisk -l Unable to seek on /dev/sda This is just the step 2 of the instruction in the http://grub.enbug.org/Grub2LiveCdInstallGuide and I cannot proceed because it cannot seek /dev/sda. However, ubuntu@ubuntu:~$ sudo dmraid -r /dev/sdb: nvidia, "nvidia_acajefec", stripe, ok, 488397166 sectors, data@ 0 /dev/sda: nvidia, "nvidia_acajefec", stripe, ok, 488397166 sectors, data@ 0 So what now? Do you have an idea for how to make fdisk see my RAID array on live cd (Ubuntu 10.10)? Honestly, I am lost, very lost in trying to restore GRUB2 on this software RAID 0 system right now.

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