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  • How to create sleek customized buttons, tables and other views for iPhone/iPad apps?

    - by wgpubs
    I'm looking to know both what can be customized as well as the recommended way to customize some of the major UIView subclasses in the iPhone SDK (in particular UIButton, UITableView/Cell ... but really open to any of the views in the SDK). Any recommended tutorials? Examples? Are there bad practices that can actually hinder performance and/or destablize your app in any way that should be avoided? Thanks

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  • What is the need of collection framework in java?

    - by JavaUser
    Hi, What is the need of Collection framework in Java since all the data operations(sorting/adding/deleting) are possible with Arrays and moreover array is suitable for memory consumption and performance is also better compared with Collections. Can anyone point me a real time data oriented example which shows the difference in both(array/Collections) of these implementations. Thx

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  • When should I use temporary variables?

    - by Kyle
    Specifically, I'm wondering which of these I should write: shared_ptr<GuiContextMenu> subMenu = items[j].subMenu.lock(); if (subMenu) subMenu->setVisible(false); or: if (items[j].subMenu.lock() items[j].subMenu.lock()->setVisible(false); I am not required to follow any style guidelines. After optimization, I don't think either choice makes a difference in performance. What is generally the preferred style and why?

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  • Comparing Flash, HTML, Silverlight, X3D and Unity 3d

    - by Amira Elsayed
    I have to prepare a comparison between the following technologies to present it to my Project Manager, but I fell that I'm lost, so if any one can help I will be thankful I want to compare between them in the following areas: the support of online video streaming the budget of using each one Learning Time will be needed to learn the technology Which one is the standard and will target a lot of users The support if I found any problem Bugs and security issues connection to DB, SOA and web services supporting of multi player

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  • Help with strange memory behavior. Looking for leaks both in my brain and in my code.

    - by BastiBechtold
    I spent the last few days trying to find memory leaks in a program we are developing. First of all, I tried using some leak detectors. After fixing a few issues, they do not find any leaks any more. However, I am also monitoring my application using perfmon.exe. Performance Monitor reports that 'Private Bytes' and 'Working Set - Private' are steadily rising when the app is used. To me, this suggests that the program is using more and more memory the longer it runs. Internal resources seem to be stable however, so this sounds like leaking to me. The program is loading a DLL at runtime. I suspect that these leaks or whatever they are occur in that library and get purged when the library is unloaded, hence they won't get picked up by the leak detectors. I used both DevPartner BoundsChecker and Virtual Leak Detector to look for memory leaks. Both supposedly catch leaks in DLLs. Also, the memory consumption is increasing in steps and those steps roughly, but not exactly, coincide with certain GUI actions I perform in the application. If these were errors in our code, they should get triggered every single time the actions are performed and not just most of the time. Whenever I am confronted with so much strangeness, I begin to question my basic assumptions. So I turn to you, who know everything, for suggestions. Is there a flaw in my assumptions? Do you have an idea of how to go about troubleshooting a problem like this? Edit: I am currently using Microsoft Visual C++ (x86) on Windows 7 64. Edit2: I just used IBM Purify to hunt for leaks. First of all, it lists a full 30% of the program as leaked memory. This can not be true. I guess it is identifying the whole DLL as leaked or something like that. However, if I search for new leaks every few actions, it reports leaks that correspond with the size increase reported by Performance Monitor. This could be a lead to a leak. Sadly, I am only using the trial version of Purify, so it won't show me the actual location of those leaks. (These leaks only show up at runtime. When the program exits, there are no leaks whatsoever reported by any tool.)

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  • Compatibility between Qt and Boost sockets libraries

    - by cake
    Hello In my work, I'm developing a Viewer client for a Offshore simulation server, using sockets to send the simulation data from the Simulator to de Viewer. But, the server uses Boost.asio as it's sockets library. As the client uses Qt for it's GUI, I was wondering if there is any problem in using de Qt Networking library for handling the sockets. Is there any compatibility issues? Thanks in advance, and sorry for my bad english.

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  • Send A DataSet via Sockets in .NET

    - by FinancialRadDeveloper
    I had written a Web Service to return a DataSet back to my ASP.Net site and this was working fine. However due to security issues and also the ability to get certain references installed, I have to move this to an App Server and so doing it as a Windows Service and communicating with the ASP.Net site now via sockets. Is there a way I can easily give the Website a serialized DataSet via Sockets from my App Server so I can read this in and then just carry on using the code I currently have to bind this to a GridView?

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  • Is django orm & templates thread safe?

    - by Piotr Czapla
    I'm using django orm and templates to create a background service that is ran as management command. Do you know if django is thread safe? I'd like to use threads to speed up processing. The processing is blocked by I/O not CPU so I don't care about performance hit caused by GIL.

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  • File.open with ruby on windows with a unicode filename

    - by aussiegeek
    I have a script running on Ruby 1.9.1 on Windows 7 I've distilled my script down to File.open("????.txt") and still can't get it to work. I know there are issues with Ruby 1.9 filename handling on windows (Using the Windows ANSI library), but would be happy enough with a work around that is callable from Ruby

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  • finding out the selectted section of a pie chart in iphone

    - by sandeep sinha
    I am using Core-Plot to draw the pie chart.I am having no issues in drawing the pie chart.I need the pie chart to be interactive in nature, i.e., if I click on any particular section on pie chart, it should navigate to the next page showing details of that particular section. Kindly help me in this regard. I tried using -(void)pieChart:sliceWasSelectedAtRecordIndex: but its not working . The method is not being called.

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  • Memcached Latency in Amazon EC2

    - by user365941
    Hi, I am planning to use Amazon EC2 host only for MemCache.My web application ll be residing on shared hosted server and will be communicating to Ec2 for querying Memcache. How would be the performance of this setup. Regards, Mugil.

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  • How do you protect your software from illegal distribution?

    - by petr k.
    I am curious about how do you protect your software against cracking, hacking etc. Do you employ some kind of serial number check? Hardware keys? Do you use any third-party solutions? How do you go about solving licensing issues? (e.g. managing floating licenses) EDIT: I'm not talking any open source, but strictly commercial software distribution...

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  • How to extract keywords from a body of text in PHP

    - by Akeem
    Currently I'm leveraging http://developer.yahoo.com/search/content/V1/termExtraction.html which isn't ideal for performance and quality reasons. Before I embark on spending time on writing a system I wanted to see if there are any other available options that can do the trick.

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  • Optimal pixel format for drawing on iPhone?

    - by Felixyz
    Pretty simple question: when doing some pretty intense drawing with CoreGraphics on the iPhone, how can I specify the pixel format to get optimal performance? Is the format that I get from the context via UIGraphicsGetCurrentContext per definition the best one? I know that RGB565 is supposed to be the fastest to use in OpenGL. Does that go for CoreGraphics as well? General advice?

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