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  • Shell Scripting For loop Syntax Error

    - by NewShellScripter
    Hello, I am trying to make a simple shell script to ping a source but I am getting bash-2.03$ ./test.sh google.com 10 .5 /home/users/me 16 256 ./test.sh: line 35: syntax error near unexpected token `((' ./test.sh: line 35: `for (( i = 1 ; i <= $totalArguments ; i++ ))' This is the code: #!/bin/bash ip=$1 count=$2 interval=$3 outputDirectory=$4 shift; shift; shift; shift; totalArguments=$# for (( i = 1 ; i <= $totalArguments ; i++ )) do ping -c $count -i $interval -s ${!i} $ip >> $outputDirectory/${!i}results.txt done Can someone tell me what I am doing wrong with the for loop syntax? Thanks!

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  • iPad as programming platform--What future do touch screens have with programming?

    - by user94154
    I read this question a few weeks ago. I thought about it when I first saw the iPad. Do you think it would be possible to set up a development environment on the iPad? I think it would be awesome if there was an InstantRails App, a Django App, maybe even 280 North's Atlas could run on it :). Would you develop using an on-screen keyboard and a 10 inch screen? Steve Jobs seems to think touch-screens are the future of web browsing. What Future does touch have with programming?

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  • Sorting a meta-list by first element of children lists in Python

    - by thismachinechills
    I have a list, root, of lists, root[child0], root[child1], etc. I want to sort the children of the root list by the first value in the child list, root[child0][0], which is an int. Example: import random children = 10 root = [[random.randint(0, children), "some value"] for child in children] I want to sort root from greatest to least by the first element of each of it's children. I've taken a look at some previous entries that used sorted() and a lamda function I'm entirely unfamiliar with, so I'm unsure of how to apply that to my problem. Appreciate any direction that can by given Thanks

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  • Parsing NSXMLNode Attributes in Cocoa

    - by Jeffrey Kern
    Hello everyone, Given the following XML file: <?xml version="1.0" encoding="UTF-8"?> <application name="foo"> <movie name="tc" english="tce.swf" chinese="tcc.swf" a="1" b="10" c="20" /> <movie name="tl" english="tle.swf" chinese="tlc.swf" d="30" e="40" f="50" /> </application> How can I access the attributes ("english", "chinese", "name", "a", "b", etc.) and their associated values of the MOVIE nodes? I currently have in Cocoa the ability to traverse these nodes, but I'm at a loss at how I can access the data in the MOVIE NSXMLNodes. Is there a way I can dump all of the values from each NSXMLNode into a Hashtable and retrieve values that way? Am using NSXMLDocument and NSXMLNodes.

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  • Reverse Breath First Search in C#

    - by Ngu Soon Hui
    Anyone has a ready implementation of the Reverse Breath First Search algorithm in C#? By Reverse Breath First Search, I mean instead of searching a tree starting from a common node, I want to search the tree from the bottom and gradually converged to a common node. Let's see the below figure, this is the output of a Breath First Search: In my reverse breath first search, 9,10,11 and 12 will be the first few nodes found ( the order of them are not important as they are all first order). 5, 6, 7 and 8 are the second few nodes found, and so on. 1 would be the last node found. Any ideas or pointers?

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  • Affordable, Stable, ASP.NET MVC Hosting Exist?

    - by Chad
    I'm using webhost4life shared hosting right now. They have a 99.99% up-time guarantee, but it is definitely not. Their support has been good when I do contact them, but it's just not stable. The site will just go down at random times for 5-10 minutes at a time. I know I'm on shared hosting, but I was hoping it would be more stable than it is. My app isn't at the point where it would need dedicated hosting yet, if the shared was stable enough. Any affordable hosting that you can vouch for (that supports ASP.NET MVC)?

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  • How to declare a function that accepts a lambda?

    - by Andreas Bonini
    I read on the internet many tutorials that explained how to use lambdas with the standard library (such as std::find), and they all were very interesting, but I couldn't find any that explained how I can use a lambda for my own functions. For example: int main() { int test = 5; LambdaTest([&](int a) { test += a; }); return EXIT_SUCCESS; } How should I declare LambdaTest? What's the type of its first argument? And then, how can I call the anonymous function passing to it - for example - "10" as its argument?

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  • Making your own "int" or "string" class

    - by amerninja13
    I disassembled the .NET 'System' DLL and looked at the source code for the variable classes (string, int, byte, etc.) to see if I could figure out how to make a class that could take on a value. I noticed that the "Int32" class inherits the following: IComparable, IFormattable, IConvertible, IComparable, IEquatable. The String and Int32 classes are not inheritable, and I can't figure out what in these inherited interfaces allows the classes to hold a value. What I would want is something like this: public class MyVariable : //inherits here { //Code in here that allows it to get/set the value } public static class Main(string[] args) { MyVariable a = "This is my own custom variable!"; MyVariable b = 2976; if(a == "Hello") { } if(b = 10) { } Console.WriteLine(a.ToString()); Console.WriteLine(a.ToString()); }

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  • Optimizing Dijkstra for dense graph?

    - by Jason
    Is there another way to calculate the shortest path for a near complete graph other than Dijkstra? I have about 8,000 nodes and about 18 million edges. I've gone through the thread "a to b on map" and decided to use Dijkstra. I wrote my script in Perl using the Boost::Graph library. But the result isn't what I expected. It took about 10+ minutes to calculate one shortest path using the call $graph-dijkstra_shortest_path($start_node,$end_node); I understand there are a lot of edges and it may be the reason behind the slow running time. Am I dead in the water? Is there any other way to speed this up?

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  • AS3 Camera denied if loaded in a parent SWF

    - by teepusink
    Hi, I have a child SWF file that has the Camera functionality. It works fine if I run the child SWF by itself. However, when I load the child SWF into a parent SWF, the Camera functionality does not work. Doing some tracing it says that Camera access is denied. That happens without me even clicking on the deny button and in fact the usual security popup does not even show up. I have added import flash.system.Security; flash.system.Security.allowDomain("*"); to both parent and child SWF. What am I missing? It's Flash 10 player. Thank you, Tee

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  • noob iPhone "count" frustrations!?!?!

    - by codemonkey
    Okay, I know I must be doing something incredibly stupid here. Here's the sample code (which, when executed within a viewDidLoad block silently crashes... no error output to debug console). NSMutableArray *bs = [NSMutableArray arrayWithCapacity:10]; [bs addObject:[NSNumber numberWithInteger: 2]]; NSLog(@"%@", [bs count]); [bs release]; What am I missing? Oh... and in case anyone is wondering, this code is just me trying to figure out why I can't get the count of an NSMutableArray that actually matters somewhere else in the program.

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  • How to remove $ from associative array using Json_decode in php?

    - by Chase
    I am trying to use the youtube API to pulldown some videos for my site. Currently am running this code here: //Youtube Videos Pull Down $youtubeURL = "http://gdata.youtube.com/feeds/api/videos?alt=json&q=cats+cradle+chapel+hill&orderby=published&max-results=10&v=2"; $youtubeSearch = file_get_contents($youtubeURL, true); $youtubeArray = json_decode($youtubeSearch, true); Not having any problems accessing certain elements of the associative array however youtube's api is putting $ in many of its array elements .. such as [media$group] Anytime I try to access an array with one of the $ elements in it, it doesn't work. Suggestions? I have tried preg_replace but can't seem to get my expression right.

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  • Discovered: Run A Video In An Image

    - by Moon .
    okay i have found the way to run a video in a image.... the procedure as given below 1 - Run a video in Windows Media Player 2 - While the video running, Press Print Screen 3 - Paste it in MS Paint 4 - Save the image in JPEG or BMP format 5 - Run any video in Windows Media Player again 6 - Now open that image, in Windows Page\Fax Viewer or ACDsee etc. 7 - at this time the win. media player is playing and the image is open 8- Switch to image (focus on image) and you will see the currently running video in the image can anybody with extensive knowledge of windows tell me why does this happen. Well this doesn't work in all versions of windows and media players. i tried this on the follwing setup Windows Media Player 10 Windows XP 2006 SP2

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  • Optimizing an iphone app for 3G in landscape with opengl, camera, quartz

    - by Joey
    I have an iphone app that basically uses the camera, an opengl layer, and UIViews (some drawing with Quartz). It runs ok on 3GS, but on the 3G it is unusable. Particularly, when I press a UIButton, it literally takes sometimes 10 seconds to register the press. Shark doesn't do me much good because it crashes when I try to profile even a tiny portion, and I've tried turning off some of the layers to see if they might be obvious contributors to the lag. I've noticed that turning off the camera really helps. I'm wondering if anyone has any familiarity with this and might suggest some likely causes. I had issues with extreme slowdown from running my app in landscape mode and using transforms, so considered that might be a cause, but I'm wondering if hoping for a 3G to run something with all of the above elements is just not really possible considering the camera seems to really cost a lot. The fact that the buttons are horribly delayed in their response makes me think there is something fundamental that I might be missing.

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  • One big call vs. multiple smaller TSQL calls

    - by BrokeMyLegBiking
    I have a ADO.NET/TSQL performance question. We have two options in our application: 1) One big database call with multiple result sets, then in code step through each result set and populate my objects. This results in one round trip to the database. 2) Multiple small database calls. There is much more code reuse with Option 2 which is an advantage of that option. But I would like to get some input on what the performance cost is. Are two small round trips twice as slow as one big round trip to the database, or is it just a small, say 10% performance loss? We are using C# 3.5 and Sql Server 2008 with stored procedures and ADO.NET.

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  • GRaaarrgghhh.... content not displaying

    - by tony noriega
    OK, i have this page on my DEV server and it works just fine... when i publish to PROD it just doesnt display... can anyone see WTF is going on...? I have re published, modified, stripped down...etc... and can not get it to work... https://www.bcidaho.com/about_us/reduce-healthcare-costs.asp there should be a content slider there that shows 10 DIVS of content... and its about to make me smash my keyboard. thanx

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  • I still can't ask the question I want to ask! [closed]

    - by Dennis
    Possible Duplicate: Unable to post question despite having no hyperlinks I'm trying to leave a real question but I keep getting this error: We're sorry, but as a spam prevention mechanism, new users can only post a maximum of one hyperlink. Earn 10 reputation to post more hyperlinks. I have removed all the hyper links in the question but I'm still getting the error. Is there someone I can email the code to so we can figure out what the problem is? And I really didn't appreciate the smart ass comment left by whom ever close my last question.

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  • Windows Azure local development environment speed

    - by Paperjam
    I've started porting an existing ASP.NET web app to Windows Azure and have noticed that the development process is really slow. Each time I make a change to my code and want to view it, I have to effectively redeploy it to the local dev cloud (using Start debugging (F5) or Start without debugging (Ctrl-F5). The process itself takes over a minute, during which time Visual Studio is completely unresponsive. Am I doing something wrong or is that simply how things are developing for Azure? My specs: Visual Studio 2008 9.0.30729.1 SP 5 projects running on .NET 3.5 SP1 Azure SDK 1.1 (February 2010) Single instance of a single web role Dual-core AMD 64 machine with 8GB RAM, 64-bit Windows 7, fully patched The main project itself is quite large (3k files, ~200k lines) but compiles normally in 10-15 seconds

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  • Dependency Injection -Colloquial explanation

    - by nettguy
    Recently I was asked to express the DI in colloquial explanation. I answered : 1) I am going to a hotel.I ordered food.The hotel management asks me to clean the plates and clean the tables.So here i am a client,I am responsible for managing the service (Instantiating,executing,disposing).But DI decouples such tasks so the service consumer no need not worry about controlling the life cycle of the service. 2) He also asked is there any microsoft API follows DI ?.I answered (This was my guess) In WCF you can create a Proxy using ChannelFactory that controls the life time of your factory. for item (1) he said only 10% is correct for item(2) he said that is factory pattern not dependency injection. Actually what went wrong in my explanation (apart from my bad English) ? What is the real answers for those? I am waiting for your valuable suggestions.

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  • Do I need multiple template specializations if I want to specialize for several kinds of strings?

    - by romkyns
    For example: template<typename T> void write(T value) { mystream << value; } template<> void write<const char*>(const char* value) { write_escaped(mystream, value); } template<> void write<char*>(char* value) { write_escaped(mystream, value); } template<> void write<std::string>(std::string value) { write_escaped(mystream.c_str(), value); } This looks like I'm doing it wrong, especially the two variants for const and non-const char*. However I checked that if I only specialize for const char * then passing a char * variable will invoke the non-specialized version, when called like this in VC++10: char something[25]; strcpy(something, "blah"); write(something); What would be the proper way of doing this?

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  • Saving CFPropertyLists To Users Folder

    - by stephen blinkhorn
    I'm trying to save a CFPropertyList to a location in the user's home folder. Using the code below I'm getting errorCode = -10 (unknown error). CFURLRef fileURL = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, CFSTR("~/testfile.txt"), kCFURLPOSIXPathStyle, false ); SInt32 errorCode; Boolean status = CFURLWriteDataAndPropertiesToResource(fileURL, xmlData, NULL, &errorCode); If I change the path to something like "/testfile.txt" without the '~' then everything works. How can one save a property list to the current user's home folder? Must one obtain the user's name first and include it in the path such as /users/toffler/testfile.txt?

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  • Is there a way to use template specialization to separate new from new[]?

    - by Marlon
    I have an auto pointer class and in the constructor I am passing in a pointer. I want to be able to separate new from new[] in the constructor so that I can properly call delete or delete[] in the destructor. Can this be done through template specialization? I don't want to have to pass in a boolean in the constructor. template <typename T> class MyAutoPtr { public: MyAutoPtr(T* aPtr); }; // in use: MyAutoPtr<int> ptr(new int); MyAutoPtr<int> ptr2(new int[10]);

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  • Issued by DNOA service access token parsing and validating in Java application

    - by Regfor
    I am creating OAuth 2.0 access token using DotNetOpenAuth, like here public AccessTokenResult CreateAccessToken( IAccessTokenRequest accessTokenRequestMessage) { var token = new AuthorizationServerAccessToken(); token.Lifetime = TimeSpan.FromMinutes(10); var signCert = LoadCert(Config.STS_CERT); token.AccessTokenSigningKey = (RSACryptoServiceProvider) signCert.PrivateKey; var encryptCert = LoadCert(Config.SERVICE_CERT); token.ResourceServerEncryptionKey = (RSACryptoServiceProvider) encryptCert.PublicKey.Key; var result = new AccessTokenResult(token); return result; } Token issued by this method looks like: { "access_token": "gAAAAH44atDAyWeu8BFwhLof7rtBRpiZrSlAC0zci8xU81tXHZDVkBX8LXrMLDHDYfimjuSOsdrXQIAY7Xf4JnK1x_fo_JSmvuiA5CvO5JUJNuEmHNSlR4ePO4tBPkOHQnN50DIRJMbHJdQrFZCqqaWz6s0iuvCuTMcTua6J0yaTPQaD9AAAAIAAAADHgef78SHh4-K2aZ87xYRoRFfmQ0lc3ET7Y5vAS7BadLM5btYvmrSkAWsCxhUji92D0LbKgyVkbQuuw5LnRP_zsxe_W_VztTqZ5m9PwJDL6q7McrUfiVQj_XBQqpv2slBeouD0F1k1KjVedR9Pwm7ganz4R7dmeYivnx8f0_isEGBqSZrtnILoit3SOCPyVxmIwizYwLE2bQOtlwVpqtrBMyzc4MVPVyaSiJb2-Lj5tOftEWl0k93Qmr8uzmjDyeCn3TsFX0f_qFgCmxp32_kt4ZTMf4zgmh5yUS1Hy7ERNQxpCIxRTx9yma7JN_K5Pss", "token_type": "bearer", "expires_in": 43200, } I need to know whether Java application will be able to parse and validate token issued in such manner?

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  • Monitoring an audio line.

    - by Stefan Liebenberg
    I need to monitor my audio line-in in linux, and in the event that audio is played, the sound must be recorded and saved to a file. Similiar to how motion monitors the video feed. Is it possible to do this with bash? something along the lines of: #!/bin/bash # audio device device=/dev/audio-line-in # below this threshold audio will not be recorded. noise_threshold=10 # folder where recordings are stored storage_folder=~/recordings # run indefenitly, until Ctrl-C is pressed while true; do # noise_level() represents a function to determine # the noise level from device if noise_level( $device ) > $noise_threshold; then # stream from device to file, can be encoded to mp3 later. cat $device > $storage_folder/`date`.raw fi; done;

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  • Best ASP.NET Background Service Implementation

    - by Jason N. Gaylord
    What's the best implementation for more than one background service in an ASP.NET application? Timer Callback Timer timer = new Timer(new TimerCallback(MyWorkCallback), HttpContext, 5000, 5000); Thread or ThreadPool Thread thread = new Thread(Work); thread.IsBackground = true; thread.Start(); BackgroundWorker BackgroundWorker worker = new BackgroundWorker(); worker.DoWork += new DoWorkEventHandler(DoMyWork); worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(DoMyWork_Completed); worker.RunWorkerAsync(); Caching like http://www.codeproject.com/KB/aspnet/ASPNETService.aspx (located in Jeff Atwood's post here) I need to run multiple background "services" at a given time. One service may run every 5 minutes where another may be once a day. It will never be more than 10 services running at a time.

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