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• Alternative to Game State System?

  - by Ricket

  As far as I can tell, most games have some sort of "game state system" which switches between the different game states; these might be things like "Intro", "MainMenu", "CharacterSelect", "Loading", and "Game". On the one hand, it totally makes sense to separate these into a state system. After all, they are disparate and would otherwise need to be in a large switch statement, which is obviously messy; and they certainly are well represented by a state system. But at the same time, I look at the "Game" state and wonder if there's something wrong about this state system approach. Because it's like the elephant in the room; it's HUGE and obvious but nobody questions the game state system approach. It seems silly to me that "Game" is put on the same level as "Main Menu". Yet there isn't a way to break up the "Game" state. Is a game state system the best way to go? Is there some different, better technique to managing, well, the "game state"? Is it okay to have an intro state which draws a movie and listens for enter, and then a loading state which loops on the resource manager, and then the game state which does practically everything? Doesn't this seem sort of unbalanced to you, too? Am I missing something?

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• The Hot-Add Memory Hogs

  - by Andrew Clarke

  One of the more difficult tasks, when virtualizing a server, is to determine the amount of memory that Hypervisor should assign to the virtual machine. This requires accurate monitoring and, because of the consequences of setting the value too low, there is a great temptation to err on the side of over-provisioning. This results in fewer guest VMs and, in fact, with more accurate memory provisioning, many virtual environments could support 30% more VMs. In order to achieve a better consolidation (aka VM density) ratio, Windows Server 2008 R2 SP1 has introduced what Microsoft calls ‘Dynamic Memory’. This means that the start-up RAM VM memory assigned to guest virtual machines can be allowed to vary according to demand, changing dynamically while the VM is running, based on the workload of applications running inside. If demand outstrips supply, then memory can be rationed according to the ‘memory weight’ assigned to the guest VM. By this mechanism, memory becomes a shared resource that can be reallocated automatically as demand patterns vary. Unlike VMWare’s Memory Overcommit technology, the sum of all the memory allocations to each virtual machine will not exceed the total memory of the host computer. This is fine for applications that are self-regulating in their demands for memory, releasing memory back into the 'pool' when not under peak load. Other applications however, such as SQL Server Standard and Enterprise, are by nature, memory hogs under high workload; they can grab hot-add memory whilst running under load and then never release it. This requires more careful setting-up and the SQLOS team have provided some guidelines from for configuring SQL Server in virtual environments. Whereas VMWare’s Memory Overcommit is well-proven in a number of different configurations, Hyper-V’s ‘Dynamic Memory’ is new. So far, the indications are that it will improve the business case for virtualizing and it is probably a far more intuitive technology for the average IT professional to grasp. It is certainly worth testing to see whether it works for you.

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• How can I access one desktop session from another on the same machine?

  - by d3vid

  I want to run a desktop session as user A, and from that session access a different desktop session as user B. This way I can test, screencast or share my screen from session B, while having access to apps/resources in session A that I do not want running/visible in session B. What application can I do this with? I assume some kind of a remote desktop client/server is what I'm looking for. So far I have tried: VNC. Logged in as user A and user B. In session B run Desktop Sharing. Switched to session A. Tried to access share with Remmina. Failed. (Can get image to appear but it's frozen.) x2go. Installed server and client from stable PPA (needed a workaround for installation to succeed). Created a connection which starts then fails instantly. Discovered mailing list post suggesting that accessing localhost is not supported. On the non-remote front: VirtualBox. Created a minimal virtual machine for session B. Too resource heavy. Am I attempting the impossible? Should I be looking for something other than a remote desktop tool?

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• CodePlex Daily Summary for Saturday, August 02, 2014

  CodePlex Daily Summary for Saturday, August 02, 2014Popular ReleasesRecaptcha for .NET: Recaptcha for .NET v1.5.1: Added support for HTTPS. Signed the assemblies.PowerShell App Deployment Toolkit: PowerShell App Deployment Toolkit v3.1.5: *Added Send-Keys function to send a sequence of keys to an application window (Thanks to mmashwani) *Added 3 optimization/stability improvements to Execute-Process following MS best practice (Thanks to mmashwani) *Fixed issue where Execute-MSI did not use value from XML file for uninstall but instead ran all uninstalls silently by default *Fixed error on 1641 exit code (should be a success like 3010) *Fixed issue with error handling in Invoke-SCCMTask *Fixed issue with deferral dates where th...AutoUpdater.NET : Auto update library for VB.NET and C# Developer: AutoUpdater.NET 1.3: Fixed problem in DownloadUpdateDialog where download continues even if you close the dialog. Added support for new url field for 64 bit application setup. AutoUpdater.NET will decide which download url to use by looking at the value of IntPtr.Size. Added German translation provided by Rene Kannegiesser. Now developer can handle update logic herself using event suggested by ricorx7. Added italian translation provided by Gianluca Mariani. Fixed bug that prevents Application from exiti...SEToolbox: SEToolbox 01.041.012 Release 1: Added voxel material textures to read in with mods. Fixed missing texture replacements for mods. Fixed rounding issue in raytrace code. Fixed repair issue with corrupt checkpoint file. Fixed issue with updated SE binaries 01.041.012 using new container configuration.Magick.NET: Magick.NET 6.8.9.601: Magick.NET linked with ImageMagick 6.8.9.6 Breaking changes: - Changed arguments for the Map method of MagickImage. - QuantizeSettings uses Riemersma by default.SharePoint Real Time Log Viewer: SharePoint Real Time Log Viewer - Source: Source codeModern Audio Tagger: Modern Audio Tagger 1.0.0.0: Modern Audio Tagger is bornQuickMon: Version 3.20: Added a 'Directory Services Query' collector agent. This collector allows for querying Active Directory using simple DirectorySearcher queries.Grunndatakvalitet: Initial working: Show Altinn metadata in Excel. To get a live list you need to run the sql script on a server and update the connection string in ExcelMultiple Threads TCP Server: Project: this Project is based on VS 2013, .net freamwork 4.0, you can open it by vs 2010 or laterAccesorios de sitios Torrent en Español para Synology Download Station: Pack de Torrents en Español 6.0.0: Agregado los módulos de DivXTotal, el módulo de búsqueda depende del de alojamiento para bajar las series Utiliza el rss: http://www.divxtotal.com/rss.php DbEntry.Net (Leafing Framework): DbEntry.Net 4.2: DbEntry.Net is a lightweight Object Relational Mapping (ORM) database access compnent for .Net 4.0+. It has clearly and easily programing interface for ORM and sql directly, and supoorted Access, Sql Server, MySql, SQLite, Firebird, PostgreSQL and Oracle. It also provide a Ruby On Rails style MVC framework. Asp.Net DataSource and a simple IoC. DbEntry.Net.v4.2.Setup.zip include the setup package. DbEntry.Net.v4.2.Src.zip include source files and unit tests. DbEntry.Net.v4.2.Samples.zip ...Azure Storage Explorer: Azure Storage Explorer 6 Preview 1: Welcome to Azure Storage Explorer 6 Preview 1 This is the first release of the latest Azure Storage Explorer, code-named Phoenix. What's New?Here are some important things to know about version 6: Open Source Now being run as a full open source project. Full source code on CodePlex. Collaboration encouraged! Updated Code Base Brand-new code base (WPF/C#/.NET 4.5) Visual Studio 2013 solution (previously VS2010) Uses the Task Parallel Library (TPL) for asynchronous background operat...Wsus Package Publisher: release v1.3.1407.29: Updated WPP to recognize the very latest console version. Some files was missing into the latest release of WPP which lead to crash when trying to make a custom update. Add a workaround to avoid clipboard modification when double-clicking on a label when creating a custom update. Add the ability to publish detectoids. (This feature is still in a BETA phase. Packages relying on these detectoids to determine which computers need to be updated, may apply to all computers).VG-Ripper & PG-Ripper: PG-Ripper 1.4.32: changes NEW: Added Support for 'ImgMega.com' links NEW: Added Support for 'ImgCandy.net' links NEW: Added Support for 'ImgPit.com' links NEW: Added Support for 'Img.yt' links FIXED: 'Radikal.ru' links FIXED: 'ImageTeam.org' links FIXED: 'ImgSee.com' links FIXED: 'Img.yt' linksAsp.Net MVC-4,Entity Framework and JQGrid Demo with Todo List WebApplication: Asp.Net MVC-4,Entity Framework and JQGrid Demo: Asp.Net MVC-4,Entity Framework and JQGrid Demo with simple Todo List WebApplication, Overview TodoList is a simple web application to create, store and modify Todo tasks to be maintained by the users, which comprises of following fields to the user (Task Name, Task Description, Severity, Target Date, Task Status). TodoList web application is created using MVC - 4 architecture, code-first Entity Framework (ORM) and Jqgrid for displaying the data.Waterfox: Waterfox 31.0 Portable: New features in Waterfox 31.0: Added support for Unicode 7.0 Experimental support for WebCL New features in Firefox 31.0:New Add the search field to the new tab page Support of Prefer:Safe http header for parental control mozilla::pkix as default certificate verifier Block malware from downloaded files Block malware from downloaded files audio/video .ogg and .pdf files handled by Firefox if no application specified Changed Removal of the CAPS infrastructure for specifying site-sp...SuperSocket, an extensible socket server framework: SuperSocket 1.6.3: The changes below are included in this release: fixed an exception when collect a server's status but it has been stopped fixed a bug that can cause an exception in case of sending data when the connection dropped already fixed the log4net missing issue for a QuickStart project fixed a warning in a QuickStart projectYnote Classic: Ynote Classic 2.8.5 Beta: Several Changes - Multiple Carets and Multiple Selections - Improved Startup Time - Improved Syntax Highlighting - Search Improvements - Shell Command - Improved StabilityTEBookConverter: 1.2: Fixed: Could not start convertion in some cases Fixed: Progress show during convertion was truncated Fixed: Stopping convertion didn't reset program titleNew ProjectsCoder Camps Troop 64 7-28: Place for group projectsEasyMR: ????EasyMR???????????????????????????????，?????，????，????，????????，??????????????????????，????????????。??????Hadoop?????????，EasyMR???????，??????????????????。FlexGraph: A simple chart control for Windows delivered in form of a function DLL. Tested in C++ (MFC, QT), C# and VB.Net.Grunndatakvalitet: Project is meant to open up the Altinn national data hub for Access from other systems and eg self-service like ExcelKinect Avateering V2 SDK migration: Kinect V2 (new version with XBOX1) SDK Avatar Avateering sample migration from version 1.8SDK. lqwe: just devlzsoft-cdn: this is a projectMin Heap: MinHeap project provides a MinHeap implementation in C# for use in Dijkstra's algorithm for computing shortest path distances for non-negative edge lengths.Modern Audio Tagger: Modern Audio Tagger is a powerful, easy and extreme fast tool to reorganize your music libraryMultiple Threads TCP Server: A multi-threaded tcp server. Using a queue with multiple threads to handle large numbers of client requests.newTeamProject1: Game Minesweeper on Console ApplicationO(1): Scale-able partitioned pure .NET Property Graph Database intended to handle large complex graphs and provide high performance OLTP property graph capabilities.Orchard Single Page Application Theme: Orchard Single Page Application ( SPA ) ThemePersonal Assistance Suite (PAS): This C# project aims to set up a modular platform for private use. Microsoft Prism Library 5.0 for WPF is used to implement this modularity.PokitDok Platform API Client for C#: The PokitDok API allows you to perform X12 transactions, find healthcare providers, and get information on health care procedure pricing. REST, JSON, Oauth2.Powershell DSC Resource - cXML: Powershell DSC Resource Module for managing XML element in a text file.Powershell Uninstall Java: Identifies and uninstalls Java software from the local machine using WMI. The query to locate the installed software interogates the WIN32_Products claSharePoint Real Time Log Viewer: SharePoint Real Time Log Viewer is a winform application that allows you to view the logs generated by SharePoint.sqldataexporter: this is a projectVAK: we are trying to create an application that will be a place people can discuss IT related topics and also try to integrate lync 2013Windows Phone 8 DropBox API: Windows Phone REST API for DropBoxYet Another Steam Mover (YASM): Yet Another Steam Mover (YASM) is a Microsoft.NET Windows Forms application for moving large digital games across different volumes.

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• Dirt Cheap DSLR Viewfinder Improves Outdoor DSLR LCD Visibility

  - by Jason Fitzpatrick

  If the excitement you felt about having a DSLR capable of shooting video wore off the second you took it outside and realized you needed an expensive add-on viewfinder to use it in sunlight, this cheap DIY viewfinder is for you. The digital video capabilities of new DSLR cameras are amazing and changing the way people interact with movie production. What’s not awesome, however, is how the LCD screen gets completely washed out in bright conditions and you almost always have to buy a $50+ aftermarket accessory to make the LCD functional under those conditions. Courtesty of the Frugal Film Maker we have the following video tutorial showing us how to turn a plastic container, a cheap dollar-store magnifying glass, a headphone ear cover, and some glue and hair ties into a dirt cheap LCD viewfinder. You’ll never have to squint or miss a shot because of bright lighting conditions again–even better yet, you’ll only spend a few bucks for the whole project. For step by step instructions in print form, hit up the link below. Homemade DSLR Viewfinder [Instructables via Make] Latest Features How-To Geek ETC How To Make Disposable Sleeves for Your In-Ear Monitors Macs Don’t Make You Creative! So Why Do Artists Really Love Apple? MacX DVD Ripper Pro is Free for How-To Geek Readers (Time Limited!) HTG Explains: What’s a Solid State Drive and What Do I Need to Know? How to Get Amazing Color from Photos in Photoshop, GIMP, and Paint.NET Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Bring the Grid to Your Desktop with the TRON Legacy Theme for Windows 7 The Dark Knight and Team Fortress 2 Mashup Movie Trailer [Video] Dirt Cheap DSLR Viewfinder Improves Outdoor DSLR LCD Visibility Lakeside Sunset in the Mountains [Wallpaper] Taskbar Meters Turn Your Taskbar into a System Resource Monitor Create Shortcuts for Your Favorite or Most Used Folders in Ubuntu

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• Did the developers of Java conciously abandon RAII?

  - by JoelFan

  As a long-time C# programmer, I have recently come to learn more about the advantages of Resource Acquisition Is Initialization (RAII). In particular, I have discovered that the C# idiom: using (my dbConn = new DbConnection(connStr) { // do stuff with dbConn } has the C++ equivalent: { DbConnection dbConn(connStr); // do stuff with dbConn } meaning that remembering to enclose the use of resources like DbConnection in a using block is unnecessary in C++ ! This seems to a major advantage of C++. This is even more convincing when you consider a class that has an instance member of type DbConnection, for example class Foo { DbConnection dbConn; // ... } In C# I would need to have Foo implement IDisposable as such: class Foo : IDisposable { DbConnection dbConn; public void Dispose() { dbConn.Dispose(); } } and what's worse, every user of Foo would need to remember to enclose Foo in a using block, like: using (var foo = new Foo()) { // do stuff with "foo" } Now looking at C# and its Java roots I am wondering... did the developers of Java fully appreciate what they were giving up when they abandoned the stack in favor of the heap, thus abandoning RAII? (Similarly, did Stroustrup fully appreciate the significance of RAII?)

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• Which platform to choose, Java or .NET?

  - by salman

  I am working in a private bank, a leading mid size bank in local market. We are going to create our core banking solution. Existing solution has been developed on Java using IBM Visual Age 4.0. It is very important to discuss architecture first, we have currently more than 350 branches working in standalone mode, and it means they are working in self contained environment. They have their own database server (IBM DB2 9.7) and they are communicating with other branches via sockets to send and receive data. Having experience of .NET for more than 5 years I am trying to convince my superiors to choose .NET platform, but they are reluctant and unwilling. It is my job to encourage them for choosing best available platform to create large scale enterprise application. In simple word, we are going to create a very large scale enterprise financial application, a centralize and integrated which connects all branch networks plus having scalable, solid architecture that easily evolve over time. I want professional people to comment on above scenarios. Which platform to choose .NET or Java? Our all resource is currently working in Java, we have homogeneous environment (no Linux, no Mac and no UNIX). Any idea, any thoughts, any points technical or non-technical i.e. administrative or management point of view will be really appreciated.

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• Making a C# w/ WPF multiple frame text / pseudo-calendar GUI application [closed]

  - by Gregor Samsa

  I am editing a recently asked question and making it specific, taking the advice of some people here. I would like to program of the following simple form: The user can produce X number of resizable frames (analogous to HTML frames). Each frame serves as a simple text editor, which you can type into and save the whole configuration including resized windows and text. The user should be able alternately "freeze" and present the information, and "unfreeze" and edit frames. I want to use C## with WPF, in Microsoft's Visual C#. I do not yet know this language. I am sure I can pick up the syntax, but I would like to ask about some general advice for how to structure such a program. I have never made a GUI program, let alone one that interfaces with a notepad or some basic text editor. Can someone either direct me to a good resource that will teach me how to do the above? Or outline the basic ingredients that such a program will require, keeping in mind that though I know some C and Python, I have no experience with GUIs or advanced programming generally? In particular I don't know how to incorporate this "text editor" aspect of the program, as well as the resizable frames I would greatly appreciate any help.

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• From the Tips Box: Revitalizing Ink Cartridges with a Water Infusion

  - by Jason Fitzpatrick

  If you’re convinced your ink cartridge has more ink to share than it is willing to give up, you’re right. Read on to see how How-To Geek reader Max squeezes extra life out of his cartridges with plain old water. Max wrote in with his simple solution. He wasn’t as interested in refilling his cartridges as he was in getting all the ink out of them. Here’s his detailed guide to getting nearly every drop of ink out of your high-priced ink cartridge: The ink in many brands of ink jet printer cartridges is generally water soluble. To see if your ink is water soluble, wet your finger and rub it across a page from your printer you don’t mind wasting.  If the print smears the ink is obviously water soluble. The top of the printer cartridge generally has the manufacturer’s label attached. It covers tiny holes through which the ink was injected into the cartridge during manufacture. Latest Features How-To Geek ETC How To Make Disposable Sleeves for Your In-Ear Monitors Macs Don’t Make You Creative! So Why Do Artists Really Love Apple? MacX DVD Ripper Pro is Free for How-To Geek Readers (Time Limited!) HTG Explains: What’s a Solid State Drive and What Do I Need to Know? How to Get Amazing Color from Photos in Photoshop, GIMP, and Paint.NET Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Bring the Grid to Your Desktop with the TRON Legacy Theme for Windows 7 The Dark Knight and Team Fortress 2 Mashup Movie Trailer [Video] Dirt Cheap DSLR Viewfinder Improves Outdoor DSLR LCD Visibility Lakeside Sunset in the Mountains [Wallpaper] Taskbar Meters Turn Your Taskbar into a System Resource Monitor Create Shortcuts for Your Favorite or Most Used Folders in Ubuntu

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• What is the rationale behind Apache Jena's *everything is an interface if possible* design philosophy?

  - by David Cowden

  If you are familiar with the Java RDF and OWL engine Jena, then you have run across their philosophy that everything should be specified as an interface when possible. This means that a Resource, Statement, RDFNode, Property, and even the RDF Model, etc., are, contrary to what you might first think, Interfaces instead of concrete classes. This leads to the use of Factories quite often. Since you can't instantiate a Property or Model, you must have something else do it for you --the Factory design pattern. My question, then, is, what is the reasoning behind using this pattern as opposed to a traditional class hierarchy system? It is often perfectly viable to use either one. For example, if I want a memory backed Model instead of a database-backed Model I could just instantiate those classes, I don't need ask a Factory to give me one. As an aside, I'm in the process of writing a library for manipulating Pearltrees data, which is exported from their website in the form of an RDF/XML document. As I write this library, I have many options for defining the relationships present in the Peartrees data. What is nice about the Pearltrees data is that it has a very logical class system: A tree is made up of pearls, which can be either Page, Reference, Alias, or Root pearls. My question comes from trying to figure out if I should adopt the Jena philosophy in my library which uses Jena, or if I should disregard it, pick my own design philosophy, and stick with it.

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• SharePoint 2007 Parser Error after updating master page

  - by Kelly Jones

  A few weeks ago I was updating the master page for a SharePoint 2007 (WSS) site.  The client wanted the site updated to reflect the new look and feel that is being applied to another set of sites in the organization. I created a new theme and master page, which I already wrote about here and here.  It worked well, except for a few pages on a subsite.  On those pages, I got the following error: Server Error in '/' Application. Parser Error Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately. Parser Error Message: Code blocks are not allowed in this file.   I decided to go comb through my new master page and compare it to the existing master page that was already working.  After going through them line by line several times, I had no clue what would be causing the error because they were basically the same! It turns out, it was a combination of two things.  First, on a few of the pages in the site, there was some include code (basically an <% EVAL()%> snippet).  This was the code that was triggering my error “Code blocks are not allowed in this file”. However, this code was working fine with the previous master page. I decided to then try doing a full deployment of the site with the new master page, and it worked fine!  Apparently, if the master page is deployed using a Feature, then it is granted permission to allow code blocks, but if you upload pages either using web UI or SharePoint Designer, then the pages won’t be able to use code blocks. I haven’t been able to pin down the rules or official info about this, but I thought others might find it useful anyway.

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• Simple ADF page using BAM Data Control

  - by [email protected]

  var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); try { var pageTracker = _gat._getTracker("UA-15829414-1"); pageTracker._trackPageview(); } catch(err) {} Purpose : In this blog I will walk you through very simple steps to create an ADF page using BAM data control connection.Details : Create the projectOpen JDeveloper (make sure you have installed the SOA extension for JDev)Create new Application using "Generic Application" template.Click on "Next"Shuttle  "ADF Faces" to right pane for the project technology.Click "Finish"Create a BAM connectionIn the resource palette click on "Folder->New Connection -> BAM"Enter the connection name and click "Next"Enter Connection details Click on "Test connection" and "Finish"Create the BAM Data Control Open the IDE connection created in above step.Drag and drop "Employees" to "Data controls" palette.Select "Flat Query" and Click "Finish".Create the View Create a new JSF page.From Data control Panel drag and drop "Employees->Query->ADF Read Only table"Right click and Run the page.

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• DAO/Webservice Consumption in Web Application

  - by Gavin

  I am currently working on converting a "legacy" web-based (Coldfusion) application from single data source (MSSQL database) to multi-tier OOP. In my current system there is a read/write database with all the usual stuff and additional "read-only" databases that are exported daily/hourly from an Enterprise Resource Planning (ERP) system by SSIS jobs with business product/item and manufacturing/SCM planning data. The reason I have the opportunity and need to convert to multi-tier OOP is a newer more modern ERP system is being implemented business wide that will be a complete replacement. This newer ERP system offers several interfaces for third party applications like mine, from direct SQL access to either a dotNet web-service or a SOAP-like web-service. I have found several suitable frameworks I would be happy to use (Coldspring, FW/1) but I am not sure what design patterns apply to my data access object/component and how to manage the connection/session tokens, with this background, my question has the following three parts: Firstly I have concerns with moving from the relative safety of a SSIS job that protects me from downtime and speed of the ERP system to directly connecting with one of the web services which I note seem significantly slower than I expected (simple/small requests often take up to a whole second). Are there any design patterns I can investigate/use to cache/protect my data tier? It is my understanding data access objects (the component that connects directly with the web services and convert them into the data types I can then work with in my Domain Objects) should be singletons (and will act as an Adapter/Facade), am I correct? As part of the data access object I have to setup a connection by username/password (I could set up multiple users and/or connect multiple times with this) which responds with a session token that needs to be provided on every subsequent request. Do I do this once and share it across the whole application, do I setup a new "connection" for every user of my application and keep the token in their session scope (might quickly hit licensing limits), do I set the "connection" up per page request, or is there a design pattern I am missing that can manage multiple "connections" where a requests/access uses the first free "connection"? It is worth noting if the ERP system dies I will need to reset/invalidate all the connections and start from scratch, and depending on which web-service I use might need manually close the "connection/session"

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• Is NAN suitable for communicating that an invalid parameter was involved in a calculation?

  - by Arman

  I am currently working on a numerical processing system that will be deployed in a performance-critical environment. It takes inputs in the form of numerical arrays (these use the eigen library, but for the purpose of this question that's perhaps immaterial), and performs some range of numerical computations (matrix products, concatenations, etc.) to produce outputs. All arrays are allocated statically and their sizes are known at compile time. However, some of the inputs may be invalid. In these exceptional cases, we still want the code to be computed and we still want outputs not "polluted" by invalid values to be used. To give an example, let's take the following trivial example (this is pseudo-code): Matrix a = {1, 2, NAN, 4}; // this is the "input" matrix Scalar b = 2; Matrix output = b * a; // this results in {2, 4, NAN, 8} The idea here is that 2, 4 and 8 are usable values, but the NAN should signal to the receipient of the data that that entry was involved in an operation that involved an invalid value, and should be discarded (this will be detected via a std::isfinite(value) check before the value is used). Is this a sound way of communicating and propagating unusable values, given that performance is critical and heap allocation is not an option (and neither are other resource-consuming constructs such as boost::optional or pointers)? Are there better ways of doing this? At this point I'm quite happy with the current setup but I was hoping to get some fresh ideas or productive criticism of the current implementation.

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• Quoting people for website dev. work

  - by Jason

  Hi All, I have recently given some quotes to a few people. And I need some advice about how things should be done... Q1: I've seen, heard of and read about a lot of developers using free resource sites online to obtain free Privacy Policy, Disclaimers etc for their/customers websites. A customer I quoted the other day expected me to write/get a disclaimer for their site. Who in their right mind would expect a document like that from a Web Developer? I just told them that they need to sort that stuff out themselves with a Lawyer or something, and then to send it to me so I can paste it on a webpage for them. Q2: If you're charging per hour, and you estimate that the project would take 1week to finish (including testing/releasing), but you soon realise that you'll require more time, do you RE-quote them? Or do you just finish off the site at the original quote price? Q3: How do you figure out how much you will charge your customers? Do you charge per-feature, or per hour, or per day, or all of the above? Thanks :)

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• Java ME SDK 3.0.5 is released!

  - by SungmoonCho

    Java ME SDK 3.0.5 went live! For many months, we have been working hard to fix bugs from previous version, and add a lot of new features demanded by Java ME community. You can download the new version from this link. Please see below for more information. NetBeans Integration All Java ME tools are implemented as NetBeans plugins. Device Manager Java ME SDK now supports multiple device managers. You can switch between different versions of device managers. LWUIT 1.5 Support The Resource Editor is available from the Java ME menu to help you design and organize resources for LWUIT applications. For a description of LWUIT 1.5 features, visit the LWUIT download page Network Monitor Integrated with NetBeans profiling tools, the Network Monitor now supports WMA, SIP, Bluetooth and OBEX, SATSA APDU and JCRMI, and server sockets. CPU Profiler Now uses standard NetBeans profiling facilities to view snapshots. Profiling of VM classes can also be toggled on or off. WURFL Device Database The database has been updated with more than 1000 new devices. Tracing - New tracing functionality now includes CLDC VM events, and monitors events such as exceptions, class loading, garbage collection, and methods invocation. New or updated JSR support - Includes support for JSR 234 (Advanced Multimedia Supplements), JSR 253 (Mobile Telephony API), JSR 257 (Contactless Communication API), JSR 258 (Mobile User Interface Customization API), and JSR 293 (XML API for Java ME).

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• Rails and Mongoid best way to implement sharing system

  - by Matteo Pagliazzi

  I have to model User and Board in rails using mongoid as ODM. Each board is referenced to an user through a foreign key user_id and now I want to add the ability to share a board with other users. Following CRUD I'd create a new Model called something like Share and it's releated Controller with the ability to create/edit/delete a Share but I have some doubts: First, where to save informations about Shares? I think I may create a field in the Board's collection called shared_with including an array of user ids. in a MySQL I'd created a new table with the ids of who share, the resource shared and the user the resources is shared with but I don't think that's necessary using MongoDB. Every user a Board is shared with should be able to edit the Board (but not to delete it) so the Board should have two relations one with the owner and another with the users the board is shared with, right? For permission (the owner should be able to delete a board but the users it is shared with shouldn't) what to use? I'm using Devise for authentication but I think something like CanCan would fit better. but how to implement it? What do you think about this way? Do you find any problems or have better solutions?

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• Second monitor not detected

  - by configurator

  Note: I've seen this question quite a lot, but in all the cases I could find with answers, the answer was either "I don't know" or "use nvidia-settings (which is irrelevant to me)." I'm using Intel Sandybridge Desktop graphics, with a P8H61-M LE motherboard. How do I get Ubuntu to detect my second monitor? Clicking "Detect Displays" here doesn't do anything. Here's some system info: $ lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) $ uname -a Linux clyde 3.5.0-13-generic #13-Ubuntu SMP Tue Aug 28 08:31:47 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux $ hardinfo [copied from the UI] -Display- Resolution : 1920x1080 pixels Vendor : The X.Org Foundation Version : 1.12.3 -Monitors- Monitor 0 : 1920x1080 pixels -Extensions- BIG-REQUESTS Composite DAMAGE DOUBLE-BUFFER DPMS DRI2 GLX Generic Event Extension MIT-SCREEN-SAVER MIT-SHM RANDR RECORD RENDER SECURITY SGI-GLX SHAPE SYNC X-Resource XC-MISC XFIXES XFree86-DGA XFree86-VidModeExtension XINERAMA XInputExtension XKEYBOARD XTEST XVideo -OpenGL- Vendor : Intel Open Source Technology Center Renderer : Mesa DRI Intel(R) Sandybridge Desktop Version : 3.0 Mesa 8.1-devel Direct Rendering : Yes I've tried upgrading everything from ppa:xorg-edgers/ppa and ppa:glasen/intel-driver. I've also installed various tools I've found in other threads (e.g. hardinfo) but they weren't really helpful to me as I don't know what to make of the data. How do I get Ubuntu to detect my second monitor?

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• Why does my system use so much cache?

  - by Dave M G

  Previously, on my desktop computer running Ubuntu 14.04, I had 4GB RAM, which I thought should be plenty. However, after being on for a while, my computer would seem to get slow. I have a system resource monitor app in my Gnome panel, which I assume represents the available RAM (?). It shows a dark green area as being "Memory", and a light green area as "Cache". The "Cache" would slowly grow until it filled the whole graph, and then programs would get slow to load, or it would take a while to switch programs. I could alleviate the problem somewhat with this command, but eventually the computer cache fills up again, so it's only a bandaid: sudo sh -c "sync; echo 3 > /proc/sys/vm/drop_caches" So, I figured I'd get more RAM, so I replaced one 2GB stick with an 8GB stick, and now I have 10 GB ram. And my "cache" still slowly maxes out and my computer slows as a result. Also, sometimes the computer starts out with "cache" maxed when I first boot and log in. Not always though, I don't know if there's a pattern that determines why it happens. Why is Ubuntu using up so much cache? Is 10GB not enough for Ubuntu? Here's what my system monitor looks like in my Gnome panel. The middle square shows RAM usage. The light green area is the "cache": This is my memory and swap history, which doesn't seem to include any information about "cache". I realize at this point I'm not totally clear on the difference between "cache" and "swap":

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• Jumpstart Fusion Middleware projects with Oracle User Productivity Kit

  - by Dain C. Hansen

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Missed our webinar on how Oracle UPK can reduce your project timeline by more than 10%?  View the playback and discover how to successfully build, deploy, and manage custom applications built with Fusion Middleware using Oracle User Productivity Kit!  Oracle UPK develops standards, processes, and designs the right solution for Oracle SOA Suite, WebCenter, Web 2.0, and Business Process Management tool users. By using Oracle UPK organizations can reduce implementation costs, increase user adoption, and shorten time to deployment of custom applications built with Fusion Middleware.  View this webcast and learn how Oracle UPK: Reduces standardization effort costs by 75% Drives standardization and adoption of ITIL processes Brings products to market faster with rapid custom application development Increases user adoption and productivity rate  For more information on Oracle UPK, visit the resource center. 

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• Learn How Ancestry.com Helps Families Uncover Their History with Oracle WebCenter

  - by Christie Flanagan

  Delivering Exceptional Online Customer ExperiencesAncestry.com is the world’s largest online family history resource, providing an engaging and interactive customer experience to more than 1.7 million members. With smart search technology, a wealth of learning resources, and a worldwide community of family history enthusiasts, Ancestry.com helps people discover their roots and tell their unique family stories. Key to Ancestry.com’s success has been the delivery of an online customer experience that converts site visitors into paying subscribers and keeps them coming back. To help achieve this goal, Ancestry.com turned to Oracle’s Web experience management solution, Oracle WebCenter Sites. Join us as executives from Ancestry.com and Oracle discuss how Oracle’s Web experience management solution is helping them deliver engaging online experiences. Learn how: Ancestry.com selected Oracle WebCenter Sites to meet their demanding Web experience management requirements The company was able to get up and running quickly despite a complex technology stack and challenging integration requirements with legacy systems Ancestry.com empowered business users to manage the online experience and significantly reduce time to market for their online campaigns and initiatives Register now for the Webcast. REGISTER NOW Thursday,June 28, 201210 a.m. PT / 1 p.m. ET Presented by: Blane Nelson Chief Architect–Applications,Ancestry.com Christie FlanaganDirector of Product Marketing, Oracle WebCenter Sites,Oracle

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• Pattern for Accessing MySQL connection

  - by Dipan Mehta

  We have an application which is C++ trying to access MySQL database. There are several (about 5 or so) threads in the application (with Boost library for threading) and in each thread has a few objects, each of which is trying to access Database for its' own purpose. It has a simple ORM kind of model but that really is not an important factor here. There are three potential access patterns i can think of: There could be single connection object per application or thread and is shared between all (or group). The object needs to be thread safe and there will be contentions but MySQL will not be fired with too many connections. Every object could initiate connection on its own. The database needs to take care of concurrency (which i think MySQL can) and the design could be much simpler. There could be two possibilities here. a. either object keeps a persistent connection for its life OR b. object initiate connection as and when needed. To simplify the contention as in case of 1 and not to create too many sockets as in case of 2, we can have group/set based connections. So there could be there could be more than one connection (say N), each of this connection could be shared connection across M objects. Naturally, each of the pattern has different resource cost and would work under different constraints and objectives. What criteria should i use to choose the pattern of this for my own application? What are some of the advantages and disadvantages of each of these pattern over the other? Are there any other pattern which is better? PS: I have been through these questions: mysql, one connection vs multiple and MySQL with mutiple threads and processes But they don't quite answer exactly what i am trying to ask.

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• How do I speed up XML parsing operation?

  - by absentx

  I currently have a php script set up to do some xml parsing. Sometimes the script is set as an on page include and other times it is accessed via an ajax call. The problem is the load time for this particular page is very long. I started to think that the php I had written to find what I need in the XML was written poorly and my script is very resource intense. After much research and testing the problem is indeed not my scripting (well perhaps you could consider it a problem with my scripting), but it looks like it takes a long time to load the particular xml sources. My code is like such: $source_recent = 'my xml feed'; $source_additional = 'the other feed I need'; $xmlstr_recent = file_get_contents($source_recent); $feed_recent = new SimpleXMLElement($xmlstr_recent); $xmlstr_additional = file_get_contents($source_additional); $feed_additional = new SimpleXMLElement($xmlstr_additional); In all my testing, the above code is what takes the time, not the additional processing I do below. Is there anyway around this or am I at the mercy of the load time of the xml URL's? One crazy thought I had to get around it is to load the xml contents into a db every so often, then just query the db for what I need. Thoughts? Ideas?

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• Video Of Uncontacted Tribe In Brazilian Forest

  - by Gopinath

  The dense forest of Amazon is not only the land of rare species and trees but also a home of many tribal communities who were never contacted by civilized humans. Recently BBC along with Survival International Group (a tribal advocacy group) scanned the dense Brazilian jungle and discovered an uncontacted tribal group believed to be Panoa Indians. They live in resource rich areas which are primary targets of mining & logging industries. In order to unearth the resources, often these tribes shot dead or chased away to new lands. The video footage and photographs of the tribes are released to bring awareness about these tribes and also urge governments to take necessary steps to protect them. Tess Thackara, Survival International’s U.S. coordinator says We’re trying to bring awareness to uncontacted tribes, because they are so vulnerable. Governments often deny that they exist, We’re releasing these images because we need evidence to prove they’re there.   via wired & bbc This article titled,Video Of Uncontacted Tribe In Brazilian Forest, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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• Coming Soon: Development and Extensibility Handbook from Oracle Press

  - by Oliver Steinmeier

  I had hoped to get my hands on a copy at OpenWorld, but it wasn't available yet from the printers.  But it's coming soon: The Oracle Fusion Applications Development and Extensibility Handbook. This book is promising to be a great resource for anyone interested in learning about our favorite topic.  And while I haven't read it yet, a look at the cover page image tells me that it's going to be a high-quality book.  That's because I have known one of the authors, Dhaval Mehta, for many years.  He recently left Oracle development for new challenges, but until then he was widely known as one of the most knowledgable Fusion Applications engineers.  And his co-authors have equally strong and complementary backgrounds.Here's what the book covers: Explore Oracle Fusion Applications components and architecture Plan, develop, debug, and deploy customizations Extend out-of-the-box functionality with Oracle JDeveloper Modify web applications using Oracle Composer Incorporate Oracle SOA Suite 11g composites Validate code through sandboxes and test environments Secure data using authorization, authentication, and encryption Design and distribute personalized BI reports Automate jobs with Oracle Enterprise Scheduler Change appearance and branding of your applications with the Oracle ADF Skin Editor   Expect a more detailed review of the book when it his your local bookseller's shelves (or Amazon).

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