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  • breaking out of for loop when running a function inside a for loop

    - by andrewj
    I'm embarrassed that I'm asking this question, but here I go: Suppose you have the following function foo. When I'm running a for loop, I'd like it to skip the remainder of foo when foo initially returns the value of 0. However, break doesn't work when it's inside a function. As it's currently written, I get an error message, no loop to break from, jumping to top level. Any suggestions? foo <- function(x) { y <- x-2 if (y==0) {break} # how do I tell the for loop to skip this z <- y + 100 z } for (i in 1:3) { print(foo(i)) }

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  • application: didFinishLaunchingWithOptions doesn't execute, but RootViewController: viewDidLoad does

    - by BeachRunnerJoe
    I'm playing around with the iPad SplitView template and it was working fine before I started swapping out view objects in my RootViewController. When it was working fine, the application:didFinishLaunchingWithOptions method would be called and would setup my persistant store objects, then the RootViewController:viewDidLoad method would be called to populate my rootView with data from my store. I opened up IB and started swapping out view objects in my RootView and now the application:didFinishLaunchingWithOptions method never gets called, but the RootViewController:viewDidLoad method still does. Obviously, the app crashes because the viewDidLoad method depends on the successful execution of the didFinishLauchingWIthOptions method to setup the persistent store objects. Does anyone have any thoughts on what is causing this or how I can go about investigating what's causing this? I'm obviously new to iPhone OS development, so I apologize if this questions is absurd in any way. Thanks so much in advance for your help!

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  • Quick way to get an NSDictionary from an XML NSData representation?

    - by dontWatchMyProfile
    I've loaded an XML file as NSData into memory and parse over the elements using NSXMLParser. Although it works, it's a very ugly and hard to maintain code since there are about 150 different elements to parse. I know there are nice third-party solutions, but I want to keep it with the iPhone SDK for purpose of practice and fun. So I thought: Why not convert that XML file into an NSDictionary? Having this, I could use fast enumeration to go over the elements. Or is it just the same amount of ugly code needed to parse and process an XML right away with NSXMLParser? Would I build up an NSDictionary for every found node in the XML and create a huge one, containing the whole structure and data? Or is there an even simpler way?

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  • Floating DIV's alignment problem.

    - by Rodrigo
    I have a fluid layout with DIV's of different heights and widths, and I'd like them to be aligned by lines, kind of like when you do a search on istockphoto, except aligned to the top: image here--http://i207.photobucket.com/albums/bb121/jpbanks/Capturadepantalla2010-06-02alas1902.png I tried floating all the DIV's to the left, but they are not aligned correctly into lines: image here--http://i207.photobucket.com/albums/bb121/jpbanks/Capturadepantalla2010-06-02alas1900.png See how "Prueba" doesn't go all the way to the left? I thought of the jQuery plugin Masonry but what I want is obviously different. Any solution using either CSS or jQuery would be fine. Any ideas?

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  • How to quickly determine whether a file is an image file using iPhone/iPad SDK

    - by Josh Bleecher Snyder
    If I have a (potentially largish) file on disk, and I want to determine quickly whether UIImage will be able to load it. I don't necessarily trust the file extension to be reliable; I need to look at the actual data. I can (of course) load it into a UIImage, but that's relatively slow and rather memory intensive. I'd rather just peek at the first chunk of the file and make a decision. What's the fastest, most efficient way to go about this that is still fairly reliable? (Ideally, it'd be an Apple-provided API, but I didn't turn one up in my searches.) A 99.9% solution is good enough; I'm willing to have false positives in rare cases, such as when an image file has been truncated.

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  • Upload multiple Images and Ping an address to upload them

    - by azz0r
    Hello! I am trying to allow administrators to upload 20-30 images in one go. I have tried jquery uploadify, SWFUpload and other various jquery scripts. However I have had many issues doing this. Uploadify worked fine, however it stopped working and after a day of debugging I couldn't figure out why (and by god, I tried to figure out why) So I have decided to try a java applet, however they all seem to cost quite abit of money. All I need is something to select some images, then each image upload pings and address where I can resize them in PHP, and done. Does anyone know a freeware solution thats easy to use?

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  • QT's QGraphicsview clickable icon on screen

    - by goodwince
    I'm working on a project with QT and am trying to draw icons from a database. I have auxiliary information in the table that I would like to display if the user chooses to see it (i.e. the x,y of the icon and some other options from database). I am debating on would it be better to go through and just redraw all the icons with this information added, or do some sort of looping through the icons and setting some value to true to display the information. Thanks in advance.

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  • HTML: How to create a DIV with only vertical scroll-bar to show long paragraphs on a webpage?

    - by Awan
    I want to show terms and condition note on my website. I dont want to use text field and also dont want to use my whole page. I just want to display my text in selected area and want to use only vertical scroll-bar to go down and read all text. Currently I am using this code: <div style="width:10;height:10;overflow:scroll" > text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text </div> It is not fixing the width and height and spread until the all text appears. Second it is showing horizontal scroll-bar and I don't want to show it. Any Idea ? Thanks

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  • Passing parameter to SOAP Web Service Requests Using Visual Studio Team System 2008

    - by Nicholas
    How can I pass in the current datetime parameter to a SOAP request? I know you can pass in parameters by adding a datasource to the web test project and reference it like this {{DataSource.TableName.FieldName}}. But I want to pass in current datetime parameter as a dynamic value (something like DateTime.Now). How do I go about doing this? Below is sample SOAP request that I put into String Body: <soap:body> <MyQuery xmlns="http://something.com"> <req> <QueryType>{{DataSource.Table.QueryType}}</QueryType> <Name>{{DataSource.Table.Name}}</Name> <RequestDateTime>{{insert DateTime.Now here}}</RequestDatetime> </req> </MyQuery> </soap:body> P.S. Running web test by adding Web Service Request in Visual Studio Team System 2008

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  • Is is possible to enable persistent cookies and disable session cookies?

    - by Sem Dendoncker
    Hello, We have an application that uses a persistent cookie to store the language of the user and a session cookie for authentication. Now our site starts with a number of tests such as: javascript, cookies, flash plugin, sound and popup and only if all tests succeed you can go to the logon page. After logging in you can see the application. Now one of our clients has a serieus problem, she passes all the tests but upon logging in she goes to the default page and get's redirected tot the logon page again. (form authentication). Now I was wondering how this is possible. It's allmost like a persistent cookie is enabled (otherweise she's not able to skip the language page) and a session cookie isn't. I hope this explains it a bit. Cheers, M.

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  • OTP or S/KEY - Conversion of Hex string into 6 readable words

    - by Garbit
    As seen in RFC2289 (S/KEY), there is a list of words that must be used when converting the hexadecimal string into a readable format. How would i go about doing so? The RFC mentions: The one-time password is therefore converted to, and accepted as, a sequence of six short (1 to 4 letter) English words. Each word is chosen from a dictionary of 2048 words; at 11 bits per word, all one-time passwords may be encoded. Read more: http://www.faqs.org/rfcs/rfc1760.html#ixzz0fu7QvXfe Does this mean converting a hex into decimal and then using that as an index for an array of words. The other thing it could be is using a text encoding e.g. 1111 might equal dog in UTF-8 encoding thanks in advance for your help!

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  • Cocoa Application with Menubar but no Dock Icon / switch menu

    - by Frank R.
    Hi, This is yet one more of those "how to switch from running with a dock icon to running without one" questions with a twist.. I don't want the dock icon but I do want a menu bar when the application is at the front. Is that possible? Running an application with LSUIElement set to 1 in the plist will launch the application without a dock icon, not showing up in the command-tab switch list and without a menu. You can switch from that mode to the "normal" mode with all three switched on via SetSystemModeUI from 10.2 onwards and via NSApplication setApplicationActivationPolicy since 10.6, but crucially there is no way back to the previous mode (go figure). So one way around this would be to launch with LSUIElement = 1 and then activate the menu bar when the application gets the focus and deactivate it on the application losing the focus.. alas I can't find a way of doing that. Can anybody help? Best regards, Frank

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  • Find largest rectangle containing all zero's in an N X N binary matrix

    - by Rajendra
    Given an N X N binary matrix (containing only 0's or 1's). How can we go about finding largest rectangle containing all 0's? Example: I 0 0 0 0 1 0 0 0 1 0 0 1 II->0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 <--IV 0 0 1 0 0 0 IV is a 6 X 6 binary matrix, return value in this case will be Cell 1: (2, 1) and Cell 2: (4, 4). Resulting sub-matrix can be square or rectangle. Return value can be size of the largest sub-matrix of all 0's also, for example, here 3 X 4.

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  • Vista/7 UAC: how to lower process privileges

    - by Sergey
    Hi all, Is it possible for a process to lower itself from elevated UAC permission back to standard user? If not can the elevated process launch its copy with standard user token and then kill itself? Any code examples (C# preferred)? Details: Problem: - user installs my product (written in C#) - the installer elevates its UAC permission to admin - at the end the installer launches my exe - the exe inherits elevated permissions from admin - the exe mounts network drives which become invisible in Windows Explorer (that runs with regular permissions) Options I considered: 1) break installer into outer exe and inner exe, that runs with elevated permission. The install consists of 1000+ lines of NSIS code and I don't know anything about NSIS 2) mounting drives with lower permissions. If I do it Win Explorer can see the drives but my exe cannot 3) setting EnableLinkedConnection registry option to 1. This is a no-go because it requires PC reboot during the installation. Please help! Sergey

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  • jQuery, insertBefore, validation, Placement of error message

    - by Steve
    I am using insertBefore under errorplacement to add validation messages, each one below each other as I want the order of the messages to go from top to bottom. I am using a hidden input at the very bottom of a parent element in order to supply an element for the insertBefore argument. Is there a way to insert from the bottom without using the dummy hidden element? If I use absolute positioning, there is a possibility for white space, for example 3 stacked messages, the middle one missing since there is no collapsing with absolute positioning.

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  • Resources for rails widget creation

    - by Kenji Crosland
    My rails app is about to go live and I'm trying to figure out how to create a widget based on data on the site. My Javascript is not too hot--limited to the O'reilly head first book on JS. I can read simple Javascript okay but when it comes to writing it I'm a little lost. That said, I hope to roll out a widget, maybe a wordpress plugin too soon after my app is launched. Does anyone know of any rails plugins, javascript templates, tutorials or books that can get me going? I did ask a similar question before here: But my limited knowledge of JS kept me from implementing the suggested answer properly.

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  • Using constructor to load data in subsonic3?

    - by Dennis
    I'm getting an error while trying to load an record through the constructor. The constructor is: public Document(Expression<Func<Document,bool>> expression); and i try to load a single item in like this var x = new Document(f=>f.publicationnumber=="xxx"); publicationnumber isn't a key but tried making an it an unique key and still no go.. Am i totally wrong regarding the use of the constructor? and can someone please tell me how to use that constructor? The error i'm getting is: Test method TestProject1.UnitTest1.ParseFileNameTwoProductSingleLanguage threw exception: System.NullReferenceException: with the following stacktrace: SubSonic.Query.SqlQuery.Where[T](Expression1` expression) Load`[T]`(T item, Expression1expression) db.Document..ctor(Expression``1 expression) in C:\@Projects\DocumentsSearchAndAdmin\DocumentsSearchAndAdmin\Generated\ActiveRecord.cs: line 5613 rest removed for simplicity Regards Dennis

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  • tolua++: Adding lua functions to a C++ class that has been exported to Lua

    - by skyeagle
    I am using tolua++ to export some C++ classes to Lua. My understanding that each class is 'implemented' on the lua side, as a lua table. I am wondering if it is possible therefore, to add new (Lua) methods to the C++ object table so that I can achieve the effect of adding new methods to the C++ class. Assume that I am exporting the class Foobar. Methods of Foobar will be accessisble in Lua as follows: Foobar:method1() Foobar:method2() ... etc. I would like to be able to add new methods (newmethod1, and newmethod2) to the Foobar table "object" I have the following questions: Is it possible to 'extend' the functionality of an exported C++ object in the manner I described above? How would one go about add new functions to the Foobar table? (I am relatively new to Lua)

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  • pros and cons with server management gui tools to manage linux web servers

    - by ajsie
    i have stumbled upon these GUI tools that could help you manage your linux server through a web interface. ebox, webmin, ispconfig, zivios, ispcp, plesk, cpanel etc. i wonder what the pros and cons are with these solutions. a lot of people is saying that they are not as good as using pure command line (ssh) to manage your server. but i think thats yet another "linux are for advanced users" talk. i agree that some things may only be done with the command line by editing directly in the configuration files. but i don't really want to do that every time and for everything. its like not having phpmyadmin for managing mysql. it would be a pain in the ass right? so if one wants to throw up a web server serving a php site oneself developed and wants all the usual stuff up and running (mysql, phpmyadmin, svn, webdav etc) is these tools the right way to go?

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  • Isapi Rewrite : Remove filename from URL

    - by namtax
    Hi there Im am trying to use the isapi rewrite tool on my web domain to write some basic rules, but am getting a bit confused. My base url is http://forevr-dev.co.uk/musicexplained/index.cfm and every page on the site follows from this base url. For example http://forevr-dev.co.uk/musicexplained/index.cfm/artist/blondie would be the artist page for blondie.. What I am looking for, is a rewrite rule, that would remove the index.cfm from the url, instead leaving http://forevr-dev.co.uk/musicexplained/artist/blondie. I have put the httpd.ini file in my musicexplained folder, under the root of my forevr-dev.co.uk domain, and I am using the following code below, which I used from the coldbox coldfusion framework application examples. RewriteEngine On RepeatLimit 0 RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.cfm/%{REQUEST_URI} [QSA,L] However, when I now go to the new pretty url, I am recieving an error message saying that the page cannot be found, alongside a 404 message. Any ideas? Thanks

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  • Sporadic name resolution failure happening on web service call

    - by ansleygal
    One of our wcf service applications calls a seperate third party web service to submit information. We are getting the following error every so often, but not all the time: System.Net.WebException: The remote name could not be resolved: 'ws.examplesite.net' at System.Net.HttpWebRequest.GetRequestStream() at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) The wierd thing is that after the error happens, we can hit "Submit" again a second later and it will go through just fine. We have checked and double checked with our network guys and they have confirmed that DNS is correct, and they have done multiple nslookups in a row to confirm. This is happening in all environments (dev, test and prod). We use the third party test and prod urls, and it is happening when we point to both. Does anyone have any other trouble shooting techniques for this or any reason this would happen? Much thanks, ~Ansley

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  • Why does my .NET Windows service not start automatically sometimes?

    - by Tomek
    Hi all, I have modified a working Windows service that had always been starting beforehand. After adding the System.Management reference it now sometimes will not start automatically. I get the following error: Service cannot be started. System.Runtime.InteropServices.COMException (0x80010002): Call was canceled by the message filter. (Exception from HRESULT: 0x80010002 (RPC_E_CALL_CANCELED)) I found another post here on SO with someone having the same issue. http://stackoverflow.com/questions/998883/why-wont-my-net-windows-service-start-automatically-after-a-reboot However, the proposed solution was to have the service start after the services it depends on have started. However, when I go to the Dependencies tab for my service, I see: Should I just use the workaround method of putting the thread to sleep, or is there a more proper way of getting this service to start correctly? Is this happening because .NET has not started before my service starts? Thanks, Tomek

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  • How to change stack size for a .NET program?

    - by carter-boater
    I have a program that does recursive calls for 2 billion times and the stack overflow. I make changes, and then it still need 40K resursive calls. So I need probably serveral MB stack memory. I heard the stack size is default to 1MB. I tried search online. Some one said to go properties -linker .........in visual studio, but I cannot find it. Does anybody knows how to increase it? Also I am wondering if I can set it somewhere in my C# program? P.S. I am using 32-bit winXP and 64bit win7.

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  • Converting cv::Mat to IplImage*

    - by amr
    The documentation on this seems incredibly spotty. I've basically got an empty array of IplImage*s (IplImage** imageArray) and I'm calling a function to import an array of cv::Mats - I want to convert my cv::Mat into an IplImage* so I can copy it into the array. Currently I'm trying this: while(loop over cv::Mat array) { IplImage* xyz = &(IplImage(array[i])); cvCopy(iplimagearray[i], xyz); } Which generates a segfault. Also trying: while(loop over cv::Mat array) { IplImage* xyz; xyz = &array[i]; cvCopy(iplimagearray[i], xyz); } Which gives me a compile time error of: error: cannot convert ‘cv::Mat*’ to ‘IplImage*’ in assignment Stuck as to how I can go further and would appreciate some advice :)

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  • Generating Entity Keys

    - by David Veeneman
    I have run into my first dissapointment with Entity Framework 4. It turns out that SQL CE, when used with EF4, does not support autogenerated primary keys. I get a System.Data.UpdateException from OnjectContext.SaveChanges() with this message: Server-generated keys and server-generated values are not supported by SQL Server Compact. So, now I have to manually generate keys for my entities. Assuming I want to use auto-incremented integer keys, what is the best way to go about generating and keeping track of the keys when using Entity Framework? Thanks for your help.

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