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• Encoding Video on the iPhone

  - by Dave

  Im trying to record the contents of the iPhone screen to video , in the app I'm working on there able to create a little animation. I'm just not sure how to encode the screen contents/animation to video? The problem with using something like ffmpeg is that its LGPL which can lead to licensing issues, is there a better option?

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• SWI-Prolog: how to load rdf triples using semweb/rdf_db library?

  - by Li Li

  Hi, I have a rdf file (file.trp) in n-triples format, where each line is: "subject predicate object ." I tried to use rdf_load in semweb/rdf_db to load it into memory, but failed. Here is what I tried: ?- rdf_load('file.trp'). ?- rdf_load('file.trp', [format(triples]). the manual says it supports xml and triples. But it only loads rdf xml files. How can I load such rdf triple file? Thanks, Li

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• Visual studio does not show content of files

  - by EKS

  http://i41.tinypic.com/1z4bi1c.png Picture says it all, it should currently be showing a file but as you can see its having issues drawing the content of the file. I have unloaded all addons and restart visual studio. If it mathers the previus project was a VS 2k8.

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• C# Dictionary Performance

  - by derek

  I am using a Dictionary to store data, and will be caching it. I would like to avoid server memory issues, and have good performance by limiting the size of the Dictionary<, either in size or number of entries. What is the best method of doing this? Is there another class I should be considering other than a Dictionary?

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• Is Appfogs pricing model sustainable?

  - by Kyle Finley

  I was looking at AppFog's Pricing and they appear to be giving 2GB of ram away for free, to nonpaying customers. This seems unprecedented for PAAS provodes--providers like Heroku and App Engine remove the app from memory if it has been inactive for certain amount of time. Does cloudfoundry work similarly? Am I wrong in assuming that in a few years appfog servers will be filled with inactive non paying applications?

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• In what situations does Flash SWF misbehaves in different browsers.

  - by coderex

  Hi, Recently I had some issues with Flash in IE, involving a SWF which is something like a gallery. In Firefox its loads perfectly, but in IE it doesn't work properly sometimes. The first time it is loaded its works fine but when I refresh all the images are blank. The image data came from XML. I wish to get some tips regarding the browsers and Flash / SWF behavior in each. Thanks in advance.

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• Please suggest good book/website to for Threads and Concurrency?

  - by learner

  I have gone through Head First Java and some other sites but I couldn't find complete stuff related to Threads and additional concurrency packages at one place. Please suggest a book/website which covers complete Threads with more details like Synchronize and locking of objects More detailed about volatile Visibility issues in Threads java.util.concurrent package java.util.concurrent.atomic package

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• Size of an object

  - by sandhya

  Hi I am trying to findout size of an object. Is there any way to know how much memory the object is using? is there anything like 'sizeof' ??

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• What instance type should I choose?

  - by cute

  To run video chat service? High-Memory or High-CPU? And, guess Standard isn't suitable?

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• Dataset size limit as an xml file.

  - by np

  Hi We are currently using DataSet for loading and saving our data to an xml file using Dataset and there is a good possibility that the size of the xml file could get very huge. Either way we are wondering if there is any limit on the size for an xml file so the Dataset would not run into any issues in the future due to the size of it. Please advise. Thanks N

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• What are the fundamental differences ASP.net and PHP?

  - by palhmbus

  Are there speed differences, performance issues, and what reasons do businesses have when they choose one or the other... and is there a learning curve steeper for one over the other? Also... are you likely to be paid more using one over the other?

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• I'm still learning OOP. Any tips on staying unbiased and pragmatic?

  - by marcdev

  I keep reading about defficiencies and issues with languages. Specifically, I'm learning PHP and Javascript, but I see it everywhere. This question arose while reading Javascript: The Good Parts and PHP Objects, Patterns and Practice. While understanding and avoiding easy pitfalls, is there a way I can learn the fundamentals of OOP and discover solid programming practices without overlooking important areas (or simply becoming jaded)? I'm sure I'll have plenty of opportunity to learn from mistakes!

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• How to convert Hex to Ascii in C with and without using sprintf?

  - by patrick

  I used strtol to convert a string to hex, now I need to print it to the screen. I'm not sure if I can use sprintf since I only have 20k of memory to use on this board. Alternatives welcome.

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• would there be such case of jumping, if yes how?

  - by Pooria

  I have an issue in the mind and that is since the jump instruction changes EIP register by adding signed offsets to it(if I'm not making a mistake here), on IA-32 architecture how would going upward in memory from location 0x7FFFFFFF(biggest positive number in signed logic) to 0x80000000(least negative number in signed logic) be possible? or maybe there shouldn't be such jump due to the nature of signed logic?

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• suggestion for designing an application to show plists

  - by thndrkiss

  Hi, I am new to iphone programming designs. I have hundreds of plists on my server. On the first launch i will be downloading all these plists into my application and storing it here. What are all the best ways to save and retrieve these plists in my application ? What are the iPhone libraries that should be used to get the best and memory efficient iphone application ?

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• Write a prime number generator to calculate/print all primes up to 1 billion (1x10^9). [closed]

  - by bachchan

  a) It must be able to calculate up to 1 billion on a computer with 1GB memory b) It should be fastest generator that you can create.

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• Application not working on Windows XP

  - by Jayesh

  Hello, I created a .NET 2.0 application on Windows 7. When I tried to run the .exe on my Windows XP machine [SP3 as well as SP2], it doesn't start up. It shows me a message that Windows has encountered a problem....send error report... Any known issues? Thanks for help!

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• C# program freezes without breakpoints

  - by Lily

  Hi, I'm implementing a program which gets text from various sites and checks which ones are most relevant to a query. The problem is that when I have breakpoints in my code it works perfectly well but without it, the program just freezes. Is this a memory issue? What can I do to solve this please? THanks

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• C# Catch Exception in a thread

  - by PaN1C_Showt1Me

  How could you find out that an Exception occurred in a Thread in a MultiThreaded Application ? and consecutively clean the resources ? Because otherwise the Thread can be still remaining in memory and running.

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• Passing C string reference to C#

  - by user336109

  c code extern "C" __declspec(dllexport) int export(LPCTSTR inputFile, string &msg) { msg = "haha" } c# code [DllImport("libXmlEncDll.dll")] public static extern int XmlDecrypt(StringBuilder inputFile, ref Stringbuilder newMsg) } I got an error when I try to retrieve the content of newMsg saying that I'm trying to write to a protected memory area. What is the best way to retrieve the string from c to c#. Thanks.

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• Upload big files with cURL

  - by almost dead

  Does it effect memory to upload files with cURL (CURLOPT_INFILE, etc)? Any issuses I should be aware of before starting to upload big files (50MB, 1oooMB, etc) with cURL?

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• How to port a simple application (which uses only stadard libc) to iPhone OS ?

  - by psihodelia

  There is a simple application written in C, which uses only standard C library functions (from stdio, stdlib, etc.) and Makefile+GCC to build it. Now, I wanna port it to iPhone OS for iPhone/iPads. Will it be seamless or are there any possible incompatibility issues?

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• Dynamic Iframe printing

  - by zachary

  I want to dynamically set the content of an iframe to that of an html document I have. It is in the form of a string in memory in javascript. Then i want to print that iframe. Ideas?

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• How to emulate onLowMemory()?

  - by Samuh

  I have put some instructions in onLowMemory() callback and want to test the same. Is there a "direct" way to test onLowMemory function of the application subclass? Or will I have to just overload the phone by starting many apps and doing memory intensive tasks? Thanks.

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• R: optimal way of computing the "product" of two vectors

  - by Musa

  Hi, Let's assume that I have a vector r <- rnorm(4) and a matrix W of dimension 20000*200 for example: W <- matrix(rnorm(20000*200),20000,200) I want to compute a new matrix M of dimension 5000*200 such that m11 <- r%*%W[1:4,1], m21 <- r%*%W[5:8,1], m12 <- r%*%W[1:4,2] etc. (i.e. grouping rows 4-by-4 and computing the product). What's the optimal (speed,memory) way of doing this? Thanks in advance.

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