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  • What should I use (controls, methods) to make a 2D tile based map editor?

    - by user1306322
    I'm making a 2d game where each tile is a square and it's viewed at straight angle, no skewing, no rotation, it's pretty simple. Two weeks ago I tried using DataGridView, but as the number of rows and columns increased, it became frustratingly slow, then I read how it should've happened to me earlier, because this control is not supposed to work with large number of cells, and I have at least 7500 cells in my smallest level, which made it unbearable to use. This is what I expect from my new editor: Most importantly, tile type. Tile images or their color codes are fine (seeing map as it is in-game is cool, but the faster, the better). Secondly, all tile parameters (in text, preferrably editable in a popup or sidebar). I'm using my own format, so I'm most probably not going to use third party product. Besides, I'm trying to learn how to do it myself.

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  • C or assembly code to find current cpu core speed

    - by honestann
    How can my application efficiently determine the following information peroidically while it executes: 1: current speed of each of the 8 CPU cores. 2: which core the code is currently executing on. My application is C and assembly-language, so any solution in either C or assembly-language is fine. This code needs to execute quickly, so creating, reading and processing a file generated by "cat /proc/cpuinfo" is much too slow. The cores slow-down and speed-up automatically, probably to keep CPU temperature under control. Therefore, a one-time measure is not sufficient for my purposes. My application already reads and subtracts the cpu cycle counter in assembly language to determine number of clock cycles, but my program cannot compute elapsed time in nanoseconds unless it knows the current clock frequency of the cpu cores (and which core the code is executing on). Thanks!

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  • The Importance of Using !important in CSS Styles

    - by Ken Cox [MVP]
    I just lost time trying to hide a CSS border in a third-party control, so it’s worth a quick post to help others avoid similar frustration. I could plainly see in the Internet Explorer 8 developer tool that an unwanted border in the Telerik RadRotator   was coming from the style classes named .RadRotator_Web20 and .rrClipRegion. So, to remove the border, I inserted my own style in the page as an override: .RadRotator_Web20 .rrClipRegion {     border: 0px; } No change! WTF??? Okay...(read more)

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  • New JDeveloper/ADF book hits the bookshelves

    - by Grant Ronald
    I've just received a nice new copy of Sten Vesterli's book Oracle ADF Enterprise Application Development - Made Simple.  I was one of the technical reviewers of the book but I'm looking forward to be able to read it end-to-end in good old fashioned book format this coming week. The book bridges the gap between those existing books that describe Oracle ADF features, and real world ADF development.  So, source control, bug tracking, estimating, testing, security, packaging etc are all covered.  Of course, every project and situation is different so the book could never supply a one-size-fits-all guide, but I think its a good addition to your ADF bookshelf.  I'll hopefully post a full review in the coming weeks. Oh, and congratulations Sten,  having gone through the pain of writing my own ADF book, I take my hat off to anyone who goes through the same journey!

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  • Should the Joel Test be essential for every software company? [closed]

    - by Mahbubur R Aaman
    Joel Test has 12 steps for better code. They are: Do you use source control? Can you make a build in one step? Do you make daily builds? Do you have a bug database? Do you fix bugs before writing new code? Do you have an up-to-date schedule? Do you have a spec? Do programmers have quiet working conditions? Do you use the best tools money can buy? Do you have testers? Do new candidates write code during their interview? Do you do hallway usability testing? Should these steps mandatory for every software companies? While recruiting programmers, then programmers should ask the company, as they follow joel steps?

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  • Oracle Dojos: Oracle Wissen - Kompakt und Kostenlos

    - by Anne Manke
    Die kleinen, roten Oracle-DOJOS geben einen kurzen und kompakten Überblick über Oracle Technologien. Jedes Dojo greift dabei ein spezielles Themengebiet auf. Ob zum Thema Enterprise Manager 12c und Cloud Control oder Big Data Einführung, die Oracle Dojos geben Informationen über Theorie und Praxis, Tipps und Hinweise - alles in handlicher Form.  Die Dojos gibt es entweder online als PDF oder als kleine Büchlein (siehe Foto). Die bekommen Sie unseren Oracle-Veranstaltungen oder direkt bei uns. Holen Sie sich Ihr eigenes Dojo und rufen Sie uns noch heute an! Übrigens: "Dojo" ist japanisch und bedeutet Übungsraum oder Übungshalle. Und so wollen die Dojos auch gesehen werden: als Übungsbuch zur Erweiterung und Verbesserung des eigenen Wissens und der eigenen Fähigkeiten.     

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  • Level selection view - similiar to Angry Bird's

    - by Piotr
    I am making game and need to prepare view for level selection. Could you recommend me some opensource library which could I use? I need icons to vibrate after long pressing one of them, some callbacks after choosing them, possibility to prepare custom icon's view, page control and horizontal scrolling. I was trying to use OpenSpringBoard but weirdly couldn't see scrollview and pagecontrol working in this project - it seems that there's possibility to use only one page. On the other hand, myLauncher(https://github.com/dlinsin/myLauncher) isn't so easy to include in project, as I need a seperate view with some delegate methods. I need to be compatible with iOS 4.2

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  • Is it a good idea to put all assembly: WebResource in the same cs file?

    - by Guilherme J Santos
    I have a .NET library, with some WebControls. These webControls have Embed Resources. And we declare them like it, in all webcontrols for each cs file: Something like this: [assembly: WebResource("IO.Css.MyCSS.css", "text/css")] namespace MyNamespace.MyClass { [ParseChildren(true)] [PersistChildren(false)] [Designer(typeof(MyNamespace.MyClassDesigner))] public class QuickTip : Control, INamingContainer { //My code... } } Would it be a good idea to create a cs file and include all WebResource declarations there? Example a cs file with just: [assembly: WebResource("IO.Css.MyCSS.css", "text/css")] [assembly: WebResource("IO.Image.MyImage.png", "image/png")] //And many other WebResources of all WebControls of the Assembly

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  • Removing a File Association

    - by Anthony Trudeau
    I found a rather simple way to remove a file association (default program) tonight that I thought others might find useful.  I found it after discovering that Windows 7 doesn't provide a straight-forward way of removing an association.Windows 7 provides a nice interface in the Control Panel for changing associations (Programs > Default Programs > Set Associations), but once you have one you cannot get rid of it.  The Registry is an obvious choice, because that's where the associations are stored.  In fact, the HKEY_CLASSES_ROOT hive has the association, but there is also a key you need to delete somewhere in the HKEY_CURRENT_USER hive.Doing a little poking around, I discovered a command line program called ASSOC that'll do it.  And typing HELP ASSOC confirms that it was what I was looking for.  The solution to my problem turned out to be as simple as typing ASSOC .BIN="" on the command line.

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  • Improve email Delivery Rates

    - by JMC
    I have a web server that sends legitimate transactional email in high quantities. A reasonable percentage of users report that they never receive the emails. For every message sent, there's also a blind carbon copy going to an unfiltered email box on a different provider that I review to ensure the server actually sent the emails. All of the emails make it to my bcc box, so the server is sending the emails properly. It seems to be a spam filtering problem at other email providers. The hosting provider for the web server indicates a reverse dns lookup has been set at their level linking the emails ip address properly to my server and domain. Question: Is there anything else I can do to improve the rate that 3rd party service providers are filtering the emails I'm sending? Is there anything I can set on the DNS that I control to show that the server sending the emails is legitimate?

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  • Is Ubuntu workable as a laptop for an IT consultant?

    - by Eric Wilson
    I work as a consultant programmer, typically in large businesses. I use a Windows Laptop, and many of my colleagues use a Mac. My personal preference would be to run Ubuntu if I could have complete control over my development environment. But I will have occasional need for Microsoft specific products, especially IE. My colleagues that use a Mac often run Windows on a virtual machine for these situations. My question is: Is Ubuntu a workable solution for the laptop of an enterprise programmer? For example, is it as easy to run Windows on a VM on Ubuntu as it is on a Mac? Has anyone out there tried this? Is there any particular reason why Ubuntu would not serve as well as a Mac for development in this environment? Note that I am not doing .NET development, so I am typically dealing with Java that is going to be run on an Apache server and used by clients running Windows.

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  • Upgrading SSIS Custom Components for SQL Server 2012

    Having finally got around to upgrading my custom components to SQL Server 2012, I thought I’d share some notes on the process. One of the goals was minimal duplication, so the same code files are used to build the 2008 and 2012 components, I just have a separate project file. The high level steps are listed below, followed by some more details. Create a 2012 copy of the project file Upgrade project, just open the new project file is VS2010 Change target framework to .NET 4.0 Set conditional compilation symbol for DENALI Change any conditional code, including assembly version and UI type name Edit project file to change referenced assemblies for 2012 Change target framework to .NET 4.0 Open the project properties. On the Applications page, change the Target framework to .NET Framework 4. Set conditional compilation symbol for DENALI Re-open the project properties. On the Build tab, first change the Configuration to All Configurations, then set a Conditional compilation symbol of DENALI. Change any conditional code, including assembly version and UI type name The value doesn’t have to be DENALI, it can actually be anything you like, that is just what I use. It is how I control sections of code that vary between versions. There were several API changes between 2005 and 2008, as well as interface name changes. Whilst we don’t have the same issues between 2008 and 2012, I still have some sections of code that do change such as the assembly attributes. #if DENALI [assembly: AssemblyDescription("Data Generator Source for SQL Server Integration Services 2012")] [assembly: AssemblyCopyright("Copyright © 2012 Konesans Ltd")] [assembly: AssemblyVersion("3.0.0.0")] #else [assembly: AssemblyDescription("Data Generator Source for SQL Server Integration Services 2008")] [assembly: AssemblyCopyright("Copyright © 2008 Konesans Ltd")] [assembly: AssemblyVersion("2.0.0.0")] #endif The Visual Studio editor automatically formats the code based on the current compilation symbols, hence in this case the 2008 code is grey to indicate it is disabled. As you can see in the previous example I have distinct assembly version attributes, ensuring I can run both 2008 and 2012 versions of my component side by side. For custom components with a user interface, be sure to update the UITypeName property of the DtsTask or DtsPipelineComponent attributes. As above I use the conditional compilation symbol to control the code. #if DENALI [DtsTask ( DisplayName = "File Watcher Task", Description = "File Watcher Task", IconResource = "Konesans.Dts.Tasks.FileWatcherTask.FileWatcherTask.ico", UITypeName = "Konesans.Dts.Tasks.FileWatcherTask.FileWatcherTaskUI,Konesans.Dts.Tasks.FileWatcherTask,Version=3.0.0.0,Culture=Neutral,PublicKeyToken=b2ab4a111192992b", TaskContact = "File Watcher Task; Konesans Ltd; Copyright © 2012 Konesans Ltd; http://www.konesans.com" )] #else [DtsTask ( DisplayName = "File Watcher Task", Description = "File Watcher Task", IconResource = "Konesans.Dts.Tasks.FileWatcherTask.FileWatcherTask.ico", UITypeName = "Konesans.Dts.Tasks.FileWatcherTask.FileWatcherTaskUI,Konesans.Dts.Tasks.FileWatcherTask,Version=2.0.0.0,Culture=Neutral,PublicKeyToken=b2ab4a111192992b", TaskContact = "File Watcher Task; Konesans Ltd; Copyright © 2004-2008 Konesans Ltd; http://www.konesans.com" )] #endif public sealed class FileWatcherTask: Task, IDTSComponentPersist, IDTSBreakpointSite, IDTSSuspend { // .. code goes on... } Shown below is another example I found that needed changing. I borrow one of the MS editors, and use it against a custom property, but need to ensure I reference the correct version of the MS controls assembly. This section of code is actually shared between the 2005, 2008 and 2012 versions of my component hence it has test for both DENALI and KATMAI symbols. #if DENALI const string multiLineUI = "Microsoft.DataTransformationServices.Controls.ModalMultilineStringEditor, Microsoft.DataTransformationServices.Controls, Version=11.0.00.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91"; #elif KATMAI const string multiLineUI = "Microsoft.DataTransformationServices.Controls.ModalMultilineStringEditor, Microsoft.DataTransformationServices.Controls, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91"; #else const string multiLineUI = "Microsoft.DataTransformationServices.Controls.ModalMultilineStringEditor, Microsoft.DataTransformationServices.Controls, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91"; #endif // Create Match Expression parameter IDTSCustomPropertyCollection100 propertyCollection = outputColumn.CustomPropertyCollection; IDTSCustomProperty100 property = propertyCollection.New(); property = propertyCollection.New(); property.Name = MatchParams.Name; property.Description = MatchParams.Description; property.TypeConverter = typeof(MultilineStringConverter).AssemblyQualifiedName; property.UITypeEditor = multiLineUI; property.Value = MatchParams.DefaultValue; Edit project file to change referenced assemblies for 2012 We now need to edit the project file itself. Open the MyComponente2012.cproj  in you favourite text editor, and then perform a couple of find and replaces as listed below: Find Replace Comment Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91 Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91 Change the assembly references version from SQL Server 2008 to SQL Server 2012. Microsoft SQL Server\100\ Microsoft SQL Server\110\ Change any assembly reference hint path locations from from SQL Server 2008 to SQL Server 2012. If you use any Build Events during development, such as copying the component assembly to the DTS folder, or calling GACUTIL to install it into the GAC, you can also change these now. An example of my new post-build event for a pipeline component is shown below, which uses the .NET 4.0 path for GACUTIL. It also uses the 110 folder location, instead of 100 for SQL Server 2008, but that was covered the the previous find and replace. "C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Bin\NETFX 4.0 Tools\gacutil.exe" /if "$(TargetPath)" copy "$(TargetPath)" "%ProgramFiles%\Microsoft SQL Server\110\DTS\PipelineComponents" /Y

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  • Can I have 2Gbit over 1Gbit Nics

    - by Daniel
    So this really baffles me. Apparently because 1Gbit can transmit data in both directions simultaneously it should be possible to get 2Gbit of data transfer on a single NIC (1Gbit flow seend and 1Gbit receive). People claim that because 1Gbit is full-duplex (almost always) it is exactly 2Gbit in total. My intuition and electrical background tells me that something is not right here 4 twisted pairs 250Mbit capacity each gives 1Gbit. Unless it is really possible to transfer data in both directions simultaneously. I did a test with iperf. Ubuntu server 12.04 <-- MacBook Pro. Both with decent CPU speed. Tested speed of connection individually and on Mac I can see 112MB/s regardless which direction data is going. On Ubuntu with vnstat and ifstat I got 970Mbit speeds. Now, launching iperf in server mode on both machines at the same time and sending data using 2 iperf clients shows that I'm for example on Ubuntu box sending at 600Mbit, and receiving 350Mbit. which adds up to pretty much 1Gbit link. So to me there is no magical 2Gbit. Can someone confirm that or tell why I'm wrong? Another thing that confuses me i the fact that e.g. 24-port switch has for example: Throughput»up»to:»50.6Mpps Switching»capacity:»68Gbps Switch»fabric»speed:»88Gbps Which would suggest thay can handle 2GBit per port.

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  • Convince developer to use IDE

    - by artjom
    There is a developer, lets call him John (currently on probationary period) in company(pretty small company approx. 10 persons, 3 developers, one of them works long in this company know business process around and can be consider as Team leader) who didn't want to use any IDE at all(he is using some text editor). Application this team working on is medium size Java application with Spring Hibernate technology stack and refactoring/adding new features to launch new version of that application in near future. John performance working without IDE on this application is lower then desirable, team leader's (lets call him Bill) assumption is this happens because John is not using IDE. Bill try to persuade John to use IDE, but this idea meets a lot of resistance and main reason is "I want to be in total control of what I am doing, so I need to write all code by myself". How can Bill convince John to try to use IDE? (considering the fact what Bill already protected John from company owner several complaints about John performance)

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  • Ubuntu 13.10 japanese keyboard layout intercepts Caps Lock

    - by Envek
    I've installed Ubuntu 13.10 (clean install on new machine), there are lot of changes for configuring keyboard layouts and I've tried to configure it as I've used earlier: Englis (US), Russian and Japanese (Anthy) with switching between them with Caps Lock key. (See screenshot) Caps Lock switching works fine between Russian and English and vice-versa, but with Japanese I can switch only TO Japanese (not FROM), in Japanese layout Caps Lock starting to work as usual Caps Lock (as a switch between small and BIG letters), so I need to use mouse to switch back to Ru or En layout. This happens ONLY with Japanese layouts (I've tried also simply "Japanese" and "Japanese (Kana)"), not with Chinese, Korean or anything else. I'm not sure who is blame for that, is it ibus-anthy or anything. Please help, I want to use Caps Lock to switch between all layouts. Also, I've created a bug in the LaunchPad: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1247363

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  • Learning PostgreSql: old versions of rows are stored right in the table

    - by Alexander Kuznetsov
    PostgreSql features multi-version concurrency control aka MVCC. To implement MVCC, old versions of rows are stored right in the same table, and this is very different from what SQL Server does, and it leads to some very interesting consequences. Let us play with this thing a little bit, but first we need to set up some test data. Setting up. First of all, let us create a numbers table. Any production database must have it anyway: CREATE TABLE Numbers ( i INTEGER ); INSERT INTO Numbers ( i ) VALUES...(read more)

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  • How can Swift be so much faster than Objective-C?

    - by Yellow
    Apple launched its new programming language Swift today. In the presentation, they made some performance comparisons between Objective-C and Python. The following is a picture of one of their slides, of a comparison of those three languages performing some complex object sort: There was an even more incredible graph about a performance comparison working on some encryption algorithm. Obviously this is a marketing talk, and they didn't go into detail on how this was implemented in each. I leaves me wondering though: how can a new programming language be so much faster? In this example, surely you just have a bad Objective-C compiler or you're doing something in a less efficient way? How else would you explain a 40% performance increase? I understand that garbage collection/automated reference control might produce some additional overhead, but this much?

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  • When to mark a user story as done in scrum?

    - by Saeed Neamati
    There is a notion in scrum that emphasizes delivery of workable units at the end of each sprint. Each workable unit also maps directly of indirectly to a user story and when in new sprint PO introduces new PBI (new user stories), this means that practically team can't always go back to previous user stories to do the rest of the job, which in turn means that when you implement a user story, you should do it as complete as it's known to the team in that time, and you shouldn't forget anything (something like "I'm sorry, I've forgotten to implement validation for that input control" or "I didn't know that cross-browser check is part of the user story"). At the other hand, test, backward compatibility, acceptance criteria, deployment and more and more concepts come after each user story. So, when can team members know that the user story is done completely, not just for demo, and start a new one?

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  • When to roll your own game engine?

    - by Joey Green
    I've been a software developer for 5 years now and wanting to get into iOS game development. I've played around with the iOS SDK for about 2 years now, attending cocoaheads meetings and feel I have a good grasp on objective-c/cocoa and even c/c++. I have a game idea and know that I will use Box2D but I'm wondering if I should use cocos2D or not. The main reasons are: I may want to do things graphics wise that aren't available in cocos2d. If I roll my own game engine I'll have more control. Of course the main reason for using a already existing game engine is the time it saves and it makes the hard stuff easier, but for someone who has the technical chops to roll his own does it make sense?

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  • Most underestimated programming tool

    - by Anto
    We have many great tools which helps a lot when programming, such as good programmers text editors, IDEs, debuggers, version control systems etc. Some of the tools are more or less "must have" tools for getting the job done (e.g. compilers). There are still always tools which do help a lot, but still don't get so much attention, for various reasons, for instance, when they were released, they were ahead of their time and now are more or less forgotten. What type of programming tool do you think is the most underestimated one? Motivate your answer.

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  • How to Multitask in the Linux Terminal: 3 Ways to Use Multiple Shells at Once

    - by Chris Hoffman
    The Linux terminal has rich multitasking capabilities. You can switch between the virtual consoles already running on your system, use Bash job control to run processes in the background, and take advantage of GNU screen, a terminal “window manager.” You don’t have to stick to a single command at a time. Whether you want to run a process in the background and revisit it occasionally or run multiple time-consuming tasks at once, Linux offers several options. How to Stress Test the Hard Drives in Your PC or Server How To Customize Your Android Lock Screen with WidgetLocker The Best Free Portable Apps for Your Flash Drive Toolkit

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  • South Florida Code Camp 2011 - 02/12/2011 - Final Days to register

    - by Nikita Polyakov
    South Florida Code Camp - 02/12/2011 - Final Days to register 13 tracks, 78 sessions, 65 speakers Topics include: Windows Phone 7, Silverlight, Web dev, Architecture/Agile, Sharepoint and SQL Networking with 700 other software developers, over 800 already registered! Free breakfast and lunch Hobnob with speakers, MVP's and authors Party afterwards with attendees and speakers Convenient location at Nova University in Davie Free XBOX 360 Kinect 250 GB raffle (must be present) Free raffle of valuable software, books and swag Free Code Camp T-shirt Book swap - see site for details You get to say "I was there!" More information: http://www.fladotnet.com/codecamp   Register now at: https://www.clicktoattend.com/invitation.aspx?code=150628 (some people have had a problem with this link but click again and it should work). I am presenting Windows Phone Marketplace session. Marketplace and Monetization Details of Windows Phone Marketplace and using Microsoft Advertising SDK control. Monetization strategies, rules and tips for making the best out of your post writing the Windows Phone app experience. Many speakers end up hanging out in the back and this session turns into a open discussion panel.

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  • The concept of virtual host and DNS

    - by Subhransu
    I have a dedicated server and a mydomain.com (bought from a hosting company). I want to host a website from my dedicated server with the domain mydomain.com i.e. when I enter mydomain.com from browser it should point to the IP(let's say X.X.X.X) of dedicated server(and a particular folder inside it). I have some following queries: In Server I know I need to edit some of the files (like: host or hostname file) in the server but I do not know what exact file I need to edit. How to add a Site enable or Site available in apache2 ? In Hosting Company control Panel Which records to add (A or cname or anyother)? Where Should I add DNS(in dedicated server section or domain name section)? How it is going to affect the behaviour of the domain? in short the question is: How the virtual host works & how to add DNS?

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  • Byte Size Tips: How to Stop OS X from Changing the Display Brightness Automatically

    - by The Geek
    After getting a new MacBook Air and deciding to try out OS X for a while, I started wondering why the battery would suddenly start dying really fast, but only when I was sitting at the kitchen table. That’s when I noticed the display brightness kept changing on its own… and realized the problem. OS X, just like your phone, and any modern device, tries to figure out the brightness of the room you’re in, and adjust the brightness of the screen. If you are over in Windows, it’s called “Adaptive” brightness, while your phone will just call it “Auto”. While this technology is great in theory, I don’t really need max brightness all the time, and I like to control it manually to make sure I’m getting the best battery life. Open up System Preferences, head to Displays. Then uncheck the Automatically adjust brightness setting.     

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  • Reducing brightness of large areas containing bright colours

    - by intuited
    I do most of my work in either a terminal or a web browser. I prefer my terminals to use bright colours on dark. I would really prefer that web pages tended to look this way as well, but that's not under my control. The problem is that when I switch from a light-on-dark terminal to a dark-on-light web page (like this one), my eyes have to adjust to the overall rise in screen brightness. Apparently this is bad for your eyes, in addition to being painful and annoying. It would seem to be possible for some layer of the interface to adjust the displayed colours for parts of the screen, or perhaps for particular windows, to reduce the brightness of the brighter areas of the screen. Can this be done, possibly with a Compiz extension?

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