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  • Resources for writing kernel in C

    - by anon
    I don't want to write my own boot loader -- happy to use Grub. I just want to implement pre-emptive multi threading, a basic file system, and virtual memory. I want something that can run on top of qemu. What's a good resource (book / tutorial) for accomplishing this goal? Thanks!

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  • Remove objects from UINavigationController

    - by Joshep Freeman
    I would like to know if there is a way to know which objects [UIViewControllers?] are stored inside [self navigationController] (I'm guessing they are stored there with pushViewController?), and if there is a way to remove such objects. Consider this scenario: 1.- Show "Presentation screen" (a logo) 2.- Wait 2 seconds 3.- Push "Data screen" (no need for "Presentation screen" anymore but it's stored in Memory) Thanks for your time.

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  • can asp.net routing 3.5 sp1 do this issue?

    - by Fredou
    I have a folder(/MyFolder/) with a dedicated web.config in it that does an impersonating In that folder I have an asp.net file that use Microsoft report viewer 8.0 named MyReport.aspx When I view this folder on my machine, it's working perfectly without issue When I publish my project to the dev server and I'm trying to view the report, I have an issue where the the user that run IIS doesn't have access to something, (rsAccessDenied) Can asp.net routing cause this issue? (I'm not at work right now so I can only go by memory so it will be hard to provide more information)

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  • What is the purpose of Finalization in java?

    - by Karthik
    Different websites are giving different opinions. My understanding is this: To clean up or reclaim the memory that an object occupies, the Garbage collector comes into action. (automatically is invoked???) The garbage collector then dereferences the object. Sometimes, there is no way for the garbage collector to access the object. Then finalize is invoked to do a final clean up processing after which the garbage collector can be invoked. is this right?

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  • C - How to implement Set data structure?

    - by psihodelia
    Is there any tricky way to implement a set data structure (a collection of unique values) in C? All elements in a set will be of the same type and there is a huge RAM memory. As I know, for integers it can be done really fast'N'easy using value-indexed arrays. But I'd like to have a very general Set data type. And it would be nice if a set could include itself.

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  • IPhone Development Profile Expired

    - by theiphoneguy
    I really combed this site and others. I read and re-read the related links here and the Apple docs. I'm sorry, but either I am obviously missing something right under my nose, or this Apple profile/certificate stuff is a bit convoluted. Here it is: I have a product in the App Store. I have updated it several times and users like it. My development profile recently expired just when I was improving the app for its next release. I can run the app in the simulator. I can compile and put the distribution build on my iPhone just fine. I went to the Apple portal and renewed the development profile. I downloaded it and installed it in Xcode. I see it in the Organize window. I see it on my iPhone. I CANNOT put the debug build on my iPhone to debug or run with Instruments. The message is that either there is not a valid signed profile or it is untrusted. I subsequently tried to download and install the certificate to my Mac's keychain. Still no success. I checked the code signing section of Project settings and also for the target and the root. All appears to indicate that it is using the expected development profile for debug. Yes, I had deleted the old profile from my iPhone, from the Organizer. I cleaned the Xcode cache and all targets. I have done all of this several times and in varying sequences to try to cover every possibility. I am ready to do anything to be able to debug with Instruments in order to check for leaks or high memory usage. Even though the distribution compile runs fine on my iPhone and plays well with other running processes, I will not release anything without a leaks/memory test. Any ideas will be appreciated. If I missed something obvious, please forgive me - it was not due to just posting a question without searching for similar postings. Thanks!

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  • Heroku in real life apps

    - by Victor P
    What is your experience using Ruby on Rails on Heroku in production mode? Apart of the issue of the expensive https, do you see any drawback in the way it manages processes, memory and storage? The people at Heroku is quite nice and I'm sure they are willing to answer my questions, but I would like some opinions in the customer side.

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  • Bash: Is it ok to use same input file as output of a piped command?

    - by Amro
    Consider something like: cat file | command > file Is this good practice? Could this overwrite the input file as the same time as we are reading it, or is it always read first in memory then piped to second command? Obviously I can use temp files as intermediary step, but I'm just wondering.. t=$(mktemp) cat file | command > ${t} && mv ${t} file

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  • How to use global caching in php?

    - by user63898
    ello all im new to php and server scripting ( coming from the java/cpp background ) my question is , if i like to be able to build some kind of single tone cache that will hold me data in memory in all the web application life , something that when i start the web server it will start main cache that will server the web application not inside sessions static cache like singletone map in c++/java that that leaves all the time what are my options ?

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  • How do games move around objects (in general)

    - by user146780
    I'm sure there's not just 1 answer to this but, do game engines actually change the vectors in memory, or use gltransformations? Because pushing and popping the matrix all the time seems inefficient, but if you keep modifying the verticies you cant make use of display lists. So I'm wondering how it's done in general. Thanks

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  • how we can save a file as temporary basis

    - by SunilRai86
    how we can save a file as temporary basis i have a xml file it is in encrypted mode i want to decrypt it .but i want it doesn't save on disk rather it save on flash memory. after decryption i have to read values and then it should destroy(decrypted xml file).

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  • Is there any Disk Cache solution for ASP.NET?

    - by silent
    My client has a busy traffic site with a big amount of pages, ASP.NET's built-in cache solutions is good, but it only stores content into the memory. Since the site has a big amount of pages, so I think disk caching would be a better idea. But after searching I didn't find a solution, any suggestions?

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  • C Objects in Objective-C

    - by paul simmons
    Hi, I couldn't find a clear explanation, just asking to be sure; are C data types handled same way (in terms of memory management) in Obj.C? i.e. they are created on stack, released immediately etc.? So they differ from Obj.C objects? Or may we make an analogy with C# (just an analogy not exactly) so that C types are handled as 'value types' and Obj.C objects as 'reference types'?

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