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• Suggestion for creating custom sound recognition software to toggle audio

  - by Parrot owner

  I need to develop a program that toggles a particular audio track on or off when it recognizes a parrot scream or screech. The software would need to recognize a particular range of sounds and allow some variations in the range (as a parrot likely won't replicate its sreeches EXACTLY each time). Example: Bird screeches, no audio. Bird stops screeching for five seconds, audio track praising the bird plays. Regular chattering needs to be ignored completely, as it is not to be discouraged. I've heard of java libraries that have speech recognition with dictionaries built in, but the software would need to be taught the particular sounds that my particular parrot makes - not words or any random bird sound. In addition as I mentioned above, it would need to allow for slight variation in the sound, as the screech will likely never be 100% identical to the recorded version. What would be the best way to go about this/what language should I look into?

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• How to send date from one view to another in xcode?

  - by Egor Sosin

  I want to make the program where you have to enter some data, and then it will manipulate that data and show it on the other view when you click done. I search through multiple tutorials, but still cant understand how you do that. I have a textfield - lesson1 and want to pass it to the label in the second view. The views are called EditClasses and DayView. Thanks a lot. Also I need to change the data every 24 hours, what is the best way to do it?

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• Which data structure(s) to back a Final Fantasy ATB-style queue? (a delay queue)

  - by ZoFreX

  Situation: There are several entities in a simulated environment, which has an artificial notion of time called "ticks", which has no link to real time. Each entity takes it in turns to move, but some are faster than others. This is expressed by a delay, in ticks. So entity A might have a delay of 10, and B 25. In this case the turn order would go: A A B A A I'm wondering what data structure to use. At first I automatically thought "priority queue" but the delays are relative to "current time" which complicates matters. Also, there will be entities with larger delays and it's not unforseeable that the program will run through millions of ticks. It seems silly for an internal counter to be building higher and higher when the delays themselves stay relatively small and don't increase. So how would you solve this?

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• How to run a jar file in hadoop

  - by Arihant

  I have created a jar file using the java file from this blog using following statements javac -classpath /usr/local/hadoop/hadoop-core-1.0.3.jar -d /home/hduser/dir Dictionary.java /usr/lib/jvm/jdk1.7.0_07/bin/jar cf Dictionary.jar /home/hduser/dir Now i have tried running this jar in hadoop by hit and trial of various commands 1hduser@ubuntu:~$ /usr/local/hadoop/bin/hadoop jar Dictionary.jar Output: Warning: $HADOOP_HOME is deprecated. RunJar jarFile [mainClass] args... 2.hduser@ubuntu:~$ /usr/local/hadoop/bin/hadoop jar Dictionary.jar Dictionary Output: Warning: $HADOOP_HOME is deprecated. Exception in thread "main" java.lang.ClassNotFoundException: Dictionary at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:423) at java.lang.ClassLoader.loadClass(ClassLoader.java:356) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at org.apache.hadoop.util.RunJar.main(RunJar.java:149) How can i run the jar in hadoop? I have the right DFS Locations as per needed by my program.

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• Please help me translate C# code to Ruby

  - by Valentin Vasilyev

  Here is the code: using System; using System.Collections.Generic; using System.Linq; namespace cs2 { class Program { static void Main(string[] args) { var i=Fibs.TakeWhile(x=>x < 1000).Where(x=>x % 2==0).Sum(); } static IEnumerable<long> Fibs() { long a = 0, b = 1; while (true) { yield return b; b += a; a = b - a; } } } }

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• Best Application for storing code snippets

  - by Konrad

  Hi all, Just wondering if you can point me in the direction of a simple, fast program which stores code snippets. I have been using a local wiki up to now, but I find it a little annoying at times. Ideally I would like this application to be portable - i.e. it could run off of a USB stick on multiple machines with no installation. What do you guys use? EDIT: I would prefer a solution that was decoupled from the IDE and stored locally, not in the cloud. EDIT 2: Thanks for all the replies thus far, but I am still awaiting a non cloud / web based portable solution. Anyone else care to weigh in? :)

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• IE7 Times Out Debugging ASP.Net Page

  - by Eric J.

  My issue is similar to ASP.NET Debugging Timing out with IIS except that I'm using the built-in ASP.Net Development Server with VS 2010. If I pause for more than about 10 seconds in the debugger, IE7 "disconnects" from the web server with the error message Internet Explorer cannot display the webpage However, unlike in the similar question, the debugger is still running. If I refresh the browser it will post that refresh to the server and I can debug the page from the top again. Is it possible to configure things so that IE7 waits (much) longer before giving up? If it makes a difference, I'm launching IE using the "Start external program" option and passing a localhost URL as the command line argument (since Chrome is my default browser). I also specify a specific port.

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• Why are nanosleep() and usleep() too slow?

  - by user351990

  I have a program that generates packets to send to a receiver. I need an efficient method of introducing a small delay between the sending of each packet so as not to overrun the receiver. I've tried usleep() and nanosleep() but they seem to be too slow. I've implemented a busy wait loop and had more success, but it's not the most efficient method, I know. I'm interested in anyone's experiences in trying to do what I'm doing. Do others find usleep() and nanosleep() to function well for this type of application? Thanks, Danny Llewallyn

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• Best Dijkstra papers to explain this quote?

  - by jemfinch

  I was enjoying "The Humble Programmer" earlier today and ran across this choice quote: Therefore, for the time being and perhaps forever, the rules of the second kind present themselves as elements of discipline required from the programmer. Some of the rules I have in mind are so clear that they can be taught and that there never needs to be an argument as to whether a given program violates them or not. Examples are the requirements that no loop should be written down without providing a proof for termination nor without stating the relation whose invariance will not be destroyed by the execution of the repeatable statement. I'm looking for which of Dijkstra's 1300+ writings best describe in further detail rules such as he was describing above.

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• How does Mach-O loader recognize a bunch of NSString objects?

  - by overboming

  I have known that If you define a bunch of @"" NSString objects in the source code in Mac OS. These NSStrings will be stored in a segment in the Mach-O library. Section sectname __ustring segname __TEXT addr 0x000b3b54 size 0x000001b7 offset 731988 align 2^1 (2) reloff 0 nreloc 0 flags 0x00000000 reserved1 0 reserved2 0 If I hex dump the binary, they are aligned closely one by one with a 0x0000as separator. What I want to know is how does the loader in Mac OS X load these NSStrings when the program runs? Are they loaded simpily by recognize the 0x0000 separator or these is a string offset table elsewhere in the binary pointing to separate NSString objects? Thanks. (What I really want to do is the increase the length of one of the NSString, so I have to know how the loader recognize these separate objects)

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• Making Eclipse behave like Visual Studio

  - by FlySwat

  I'm doing some Android dev, and I much prefer Visual Studio, but I'll have to use Eclipse for this. Has anyone made a tool that switches Eclipse to look and behave more like visual studio? I mainly can't stand its clippyesqe suggestions on how I should program (Yes, I know I have not yet used that private field! Thanks Eclipse!), or its incredibly lousy intellisense. For example, in eclipse, if I don't type "this" first, its intellisense won't realize I want to look for locally scoped members. Also, the TAB to complete VS convention is drilled into my head, and Eclipse is ENTER to complete, I could switch everything by hand but that would take hours, and I was hoping someone had some sort of theme or something that has already done it :)

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• Understanding top output in Linux

  - by Rayne

  Hi, I'm trying to determine the CPU usage of a program by looking at the output from Top in Linux. I understand that %us means userspace and %sy means system/kernel etc. But say I see 100%us. Does this mean that the CPU is really only doing useful work? What if a CPU is tied up waiting for resources that are not avaliable, or cache misses, would it also show up in the %us column, or any other column? Thank you.

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• Can I make valgrind ignore glibc libraries?

  - by Jack

  Is it possible to tell valgrind to ignore some set of libraries? Specifically glibc libraries.. Actual Problem: I have some code that runs fine in normal execution. No leaks etc. When I try to run it through valgrind, I get core dumps and program restarts/stops. Core usually points to glibc functions (usually fseek, mutex etc). I understand that there might be some issue with incompatible glibc / valgrind version. I tried various valgrind releases and glibc versions but no luck. Any suggestions?

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• Windows/C++: Is it possible to find the line of code where exception was thrown having "Exception Of

  - by Pavel

  One of our users having an Exception on our product startup. She has sent us the following error message from Windows: Problem Event Name: APPCRASH Application Name: program.exe Application Version: 1.0.0.1 Application Timestamp: 4ba62004 Fault Module Name: agcutils.dll Fault Module Version: 1.0.0.1 Fault Module Timestamp: 48dbd973 Exception Code: c0000005 Exception Offset: 000038d7 OS Version: 6.0.6002.2.2.0.768.2 Locale ID: 1033 Additional Information 1: 381d Additional Information 2: fdf78cd6110fd6ff90e9fff3d6ab377d Additional Information 3: b2df Additional Information 4: a3da65b92a4f9b2faa205d199b0aa9ef Is it possible to locate the exact place in the source code where the exception has occured having this information? What is the common technique for C++ programmers on Windows to locate the place of an error that has occured on user computer? Our project is compiled with Release configuration, PDB file is generated. I hope my question is not too naive.

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• How to send news letters in zend

  - by Sherif

  i am trying to send something like news letter Via Zend_Mail but after 12 mail i got this message Fatal error: Maximum execution time of 30 seconds exceeded in C:\Program Files\Zend\Apache2\htdocs\forga\library\Zend\Mail\Protocol\Abstract.php on line 321 my Code is like: $smtpHost = 'smtp.gmail.com'; $smtpConf = array( 'auth' = 'login', 'ssl' = 'tls', 'port' = '587', 'username' ='[email protected]', 'password' = 'xxxxxxxx' ); $transport = new Zend_Mail_Transport_Smtp($smtpHost, $smtpConf); foreach($users as $user) { $mail = new Zend_Mail(); $mail-setFrom("[email protected]", 'Forga'); $mail-setSubject($subject); if($html=='on') $mail-setBodyHtml($message); else $mail-setBodyText($message); $mail-addto($user); $transport-send($mail); }

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• $(MSBuildStartupDirectory) in Visual Studio points to different places on different machines

  - by skolima

  In a large solution, I'm integrating Gendarme into Visual Studio 2008 compilation process. I am using GendarmeMsBuild task along with a .targets file to add a AfterBuild target to every project in the solution. I am looking for a way to import this file into .csproj files in a way that wouldn't require me to change the include path (the projects have different nesting levels). Apart from using NuGet SolutionDir variable, best way to solve this seemed to be to use $(MSBuildStartupDirectory). However, as it turns out, on some machines, using the same version of VS 2008 (as same updates installed, as far as I was able to check) this resolves to the solution directory, and on others to c:\Program Files (x86)\Microsoft Visual Studio 9.0\Common7\IDE. How can I either get this to always resolve to the solution folder or obtain the base folder in another consistent way?

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• Virtual directory problem for cruise control.net

  - by Praveen

  Hi All, I have downloaded cruisecontrol.net setup and have installed it in "C:\Program Files\CruiseControl.NET". It contains a folder called "webdashboard" which has aspx page and some other stuff as well. I want to configure this in my IIS so that I can access it , I tried but it doesn't work , every time I get error that page you requested is not found. I created web site, created virtual directory but none is working. I have not put anything in inetpub/wwwroot. Can anyone please guide me how can I configure this to work.

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• Passing objects by reference or not in C#

  - by Piku

  Suppose I have a class like this: public class ThingManager { List<SomeClass> ItemList; public void AddToList (SomeClass Item) { ItemList.Add(Item); } public void ProcessListItems() { // go through list one item at a time, get item from list, // modify item according to class' purpose } } Assume "SomeClass" is a fairly large class containing methods and members that are quite complex (List<s and arrays, for example) and that there may be a large quantity of them, so not copying vast amounts of data around the program is important. Should the "AddToList" method have "ref" in it or not? And why? It's like trying to learn pointers in C all over again ;-) (which is probably why I am getting confused, I'm trying to relate these to pointers. In C it'd be "SomeClass *Item" and a list of "SomeClass *" variables)

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• uneven illuminated images

  - by coul

  How to get rid of uneven illumination from images, that contain text data, usually printed but may be handwritten? It can have some spots of lights because the light reflected while making picture. I've seen the Halcon program's segment_characters function that is doing this work perfectly, but it is not open source. I wish to convert an image to the image that has a constant illumination at background and more dark colored regions of text. So that binarization will be easy and without noise. The text is assumed to be dark colored than it's background. Any ideas?

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• I'm having a hard time calling the variable from first frame.

  - by iownfloppydisk

  here is how should my program be. In first frame, there is a textfield1 where a user input text and when he press a button, a new frame will be display with a textfield2 that displays the inputted text from the textfield1. please help me with the syntax. i'm still a beginner in java. much thanks guys. First Frame: textfield= new JTextField(); textfield.setPreferredSize( new Dimension(200,30) ) ; textfield.setSize( textfield.getPreferredSize() ) ; textfield.setLocation(95,198) ; textfield.setSize(175,28); cont.add(textfield); public void actionPerformed(ActionEvent e) { this.setVisible(false); new Frame2().setVisible(true); //displays the 2nd frame right? } now i don't know what to do on my 2nd frame or where to start because i can't get the variable from the first frame

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• Logical Matrix .... Solution

  - by Sanju

  Suppose you have an NxN matrix and you have to check whether it's a upper diagonal matrix or not. Is there any generic method to solve this problem? I am elaborating my question: Some thing is like this: Suppose you have NXN matrix having the value of N=4 then matrix will look like this: |5 6 9 2| |1 8 4 9| |5 8 1 6| |7 6 3 2| Its a 4X4 square matrix and again if it's upper triangle matrix it will look something like this: |5 6 9 2| |1 8 4 0| |5 8 0 0| |7 0 0 0| I need to generate a generic program in any language to check wether a square matrix is upper trailgle or not.

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• Issuing native system commands in Scala

  - by Tony

  I want to issue a native system command from a Scala program, and perhaps trap the output. ("ls" comes to mind. There may be other ways to get directory information without issuing the command, but that's beside the point of my question.) It would correspond to os.system(...) in Python. I've looked in "Programming in Scala". I've looked in O'Reilly's "Programming Scala". I've Googled several combinations of terms. No luck yet. Can someone out there give me an example, or point me at a resource where I can find an example?

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• how can we count the time interval of the animation in cocos2d ?

  - by srikanth rongali

  Hi, I am doing my program in cocos2d. I am using NSDate to get the current time of the start of animation. And I know my animation takes 3 seconds. So I can get the time at completion of animation by using NSInterval and using the previous time and animation time. But, if If the animation time interval is not fixed how can I calculate the time interval of the animation and time at the completion of the animation ? I am animating a sprite. Please help how can I make it. Thank You.

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• Software Protection: Shuffeling my application?

  - by Martijn Courteaux

  Hi, I want to continue on my previous question: http://stackoverflow.com/questions/3007168/torrents-can-i-protect-my-software-by-sending-wrong-bytes Developer Art suggested to add a unique key to the application, to identifier the cracker. But JAB said that crackers can search where my unique key is located by checking for binary differences, if the cracker has multiple copies of my software. Then crackers change that key to make them self anonymous. That is true. Now comes the question: If I want to add a unique key, are there tools to shuffle (a kind of obfuscation) the program modules? So, that a binary compare would say that the two files are completely different. So they can't locate the identifier key. I'm pretty sure it is possible (maybe by replacing assembler blocks and make some jumps). I think it would be enough to make 30 to 40 shuffles of my software. Thanks

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• C# SortedList, getting value by key

  - by user1004039

  I have SortedList in descending order. public class MyComparer : IComparer<int> { public int Compare(int x, int y) { if (x.CompareTo(y) > 0) return -1; return 1; } } class Program { static void Main(string[] args) { SortedList<int, bool> myList = new SortedList<int, bool>(new MyComparer()); myList.Add(10, true); bool check = myList[10];//In this place an exception "Can't find key" occurs } } When SortedList created without my own IComparer the code works fine and no exception occurs.

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