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  • Java regex basic usage problem

    - by Ernelli
    The following code works: String str= "test with foo hoo"; Pattern pattern = Pattern.compile("foo"); Matcher matcher = pattern.matcher(str); if(matcher.find()) { ... } But this example does not: if(Pattern.matches("foo", str)) { ... } And neither this version: if(str.matches("foo")) { ... } In the real code, str is a chunk of text with multiple lines if that is treated differently by the matcher, also in the real code, replace will be used to replace a string of text. Anyway, it is strange that it works in the first version but not the other two versions.

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  • Better data stream reading in Haskell

    - by Tim Perry
    I am trying to parse an input stream where the first line tells me how many lines of data there are. I'm ending up with the following code, and it works, but I think there is a better way. Is there? main = do numCases <- getLine proc $ read numCases proc :: Integer -> IO () proc numCases | numCases == 0 = return () | otherwise = do str <- getLine putStrLn $ findNextPalin str proc (numCases - 1) Note: The code solves the Sphere problem https://www.spoj.pl/problems/PALIN/ but I didn't think posting the rest of the code would impact the discussion of what to do here.

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  • Handling ID's with db4o and ASP.NET MVC2

    - by Craig McGuff
    So, i'm looking at the TekPub sample for ASP.NET MVC2 (http://mvcstarter.codeplex.com/) using DB4o and there are a bunch of templates to create controllers etc, the generated code looks like: public ActionResult Details(int id) { var item = _session.Single<Account>(x=>x.ID == id); return View(item); } Now, my understanding is that using DB4o or a simliar object database that ID's are not required, so how/what exactly do I pass to enable this kind of templated code to function? UPDATE: Both answers were useful, I have modifed the templates to use GUID as the ID. I will add any relevant code/notes here once I see how it works out.

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  • Prototype Ajax.Updater Response OK, but not showing up in FF. working in Safari!

    - by koko
    Hi, I've got a quite strange problem here. I'm calling some simple code via Ajax.Updater: new Ajax.Updater('load','http://myurl.com/demo.pl?key=demokey&param1=xyz&param2=abc',{ method:'get', onComplete:function(transport){ alert(transport.responseText) } }); which gets some code like this: <img id="2009_04_15_1239786246" src='../pv/100/2009_04_15_1239786246-01.jpg' border="1"> <img id="2009_04_15_1239786066" src='../pv/100/2009_04_15_1239786066-01.jpg' border="1"> ... and so on This code shows up in my firebug console as my server response, so everything should be fine. No errors here at all. Works fine in Safari. Firefox, according to Firebug, knows there is a response, but it won't show a thing in my div 'load' and the alert(transport.responseText) is also empty. I have no idea what could be the problem here.

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  • Beagleboard: How do I send/receive data to/from the DSP?

    - by snakile
    I have a beagleboard with TMS320C64x+ DSP. I'm working on an image processing beagleboard application. Here's how it's going to work: The ARM reads an image from a file and put the image in a 2D array. The arm sends the matrix to the DSP. The DSP receives the matrix. The DSP performs the image processing algorithm on the received matrix (the algorithm code uses about 5MB of dynamically allocated memory). The DSP sends the processed image (matrix) to the ARM. The arm received the matrix. The arm saved the processed image to a file. I'v already written the code for steps 1,3,5. What is the easiest way to do steps 3+4 (sending the data)? Code examples are welcome.

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  • Powershell: error handling with try and catch

    - by resolver101
    I'm writing a script and want to control the errors. However im having trouble finding information on error handling using the try, catch. I want to catch the specific error (shown below) and then perform some actions and resume the code. What code is needed for this? This is the code i am running and im entering in a invalid username when prompted. Get-WMIObject Win32_Service -ComputerName localhost -Credential (Get-Credential) Get-WmiObject : User credentials cannot be used for local connections At C:\Users\alex.kelly\AppData\Local\Temp\a3f819b4-4321-4743-acb5-0183dff88462.ps1:2 char:16 + Get-WMIObject <<<< Win32_Service -ComputerName localhost -Credential (Get-Credential) + CategoryInfo : InvalidOperation: (:) [Get-WmiObject], ManagementException + FullyQualifiedErrorId : GetWMIManagementException,Microsoft.PowerShell.Commands.GetWmiObjectCommand

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  • How to get a list of unchecked checkboxes when submitting a form?

    - by SzamDev
    Hi I have this code for example : $b = ""; while ($row = mysql_fetch_array($rows)) { if ($row['enabled'] == 1) { $b = "checked"; } else { $b = "": } echo "<\input name='nam[$row[id]]' type='checkbox' value='$row[id]' $b /"; } When I execute this code, I will get a list of checkboxes, some of them are checked and others are not. I can use this code to get a list of checked checkboxes. if (isset($_POST['sub'])) { //check if form has been submitted or not $nam = $_POST['nam']; if (!empty($nam)) { foreach($nam as $k=>$val){ // proccess operation with checked checkboxes } } I need to know how I can get list of unckecked checkboxes after submitting the form. Thanks in advance.

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  • Shoes and Gems and how to get them working.

    - by Pselus
    I have seen this question asked all over the internet and answered in many different ways. None of them seem to be working for me. I am trying to get Gems to work in Shoes (specifically the gem Mechanize). Whenever I use the code: Shoes.setup do gem 'mechanize' end require 'mechanize' It gives me the popup that says it is installing native extensions and sits at that screen for 30 minutes and longer (I've only ever waited as long as 30 minutes). I have seen people say that you should be putting the .gem files in ~/.shoes/+gem/gem (on OS X) but that hasn't worked for me. Neither has putting the source code for the gem there. On another odd note, both the gems RedCloth and Nokogiri come with Shoes...but using the above code for them gets me No such file to load errors for both of them. Anyone have any expertise in this area and can help me out?

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  • Change color of a table cell using javascript using dropdown menu

    - by Mike Burzycki
    I'd like to use some javascript code to change the background color of a single cell within a table. I have some code below which allows me to change the page background color. This is similar in concept to what I would like to do, but I would really like to be able to change just one cell...not the whole page. I have thought about making the rest of the cell borders and background colors white, leaving the cell I want to manipulate transparent, but I think this probably a brute force method that will cause me trouble down the road. Does anyone have any advice to do this with javascript? The page background color changing code is here: <form name="bgcolorForm">Try it now: <select onChange="if(this.selectedIndex!=0) document.bgColor=this.options[this.selectedIndex].value"> <option value="choose">set background color <option value="FFFFCC">light yellow <option value="CCFFFF">light blue <option value="CCFFCC">light green <option value="CCCCCC">gray <option value="FFFFFF">white </select></form> Thanks for the help, Mike

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  • Writing the output of IEnumerable<XElement> to a XML File

    - by Googler
    HI folks , This is my code to read two xml files and merge their elemnts. I want to write the output to an xml file. This is my code. IEnumerable<XElement> list0 = doc.Descendants(node1).Concat(doc2.Descendants(node2)); foreach (XElement el in list0) Console.WriteLine(el); Instead of writing to the console i need to write it to a xml file. Output is also in the xml format.How to achieve this. Can anyone pls give me a code or method to achiev this.

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  • Overcoming C limitations for large projects

    - by Francisco Garcia
    One aspect where C shows its age is the encapsulation of code. Many modern languages has classes, namespaces, packages... a much more convenient to organize code than just a simple "include". Since C is still the main language for many huge projects. How do you to overcome its limitations? I suppose that one main factor should be lots of discipline. I would like to know what you do to handle large quantity of C code, which authors or books you can recommend.

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  • Why is NavigationHandler.handleNavigation() not forwarding to view ID?

    - by Erik Hermansen
    Inside of a phase listener class that runs during the "RESTORE_VIEW" phase, I have some code like this: public void afterPhase(PhaseEvent event) { FacesContext fc = event.getFacesContext(); NavigationHandler nh = fc.getApplication().getNavigationHandler(); nh.handleNavigation(fc, null, "/a/specific/path/to/a/resource.jspx"); } Navigation to the new URL doesn't work here. The request made will just receive a response from the original JSPX that was navigated to. Code like this works fine: public void afterPhase(PhaseEvent event) { FacesContext fc = event.getFacesContext(); NavigationHandler nh = fc.getApplication().getNavigationHandler(); nh.handleNavigation(fc, null, "OUTCOME_DEFINED_IN_FACES_CONFIG_XML"); } Also the first snippet will work with an IceFaces Faces provider, but not Sun JSF 1.2 which is what I need to use. Is there something I can do to fix the code so it is possible to forward to specific URLs?

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  • Endianness manipulation - is there a C library for this?

    - by Malvineous
    Hi all, With the sort of programs I write (working with raw file data) I often need functions to convert between big and little endian. Usually I write these myself (which is covered by many other posts here) but I'm not that keen on doing this for a number of reasons - the main one being lack of testing. I don't really want to spend ages testing my code in a big endian emulator, and often just omit the code for big endian machines altogether. I also would rather make use of faster functions provided by various compilers, while still keeping my programs cross-platform. The only things I can find are socket calls like htons() but they require different #include files on each platform, and some GPL code like this, however that particular file, while comprehensive, seems to miss out on some of the high performance functions provided by some compilers. So, does anyone know of a library (ideally just a .h file) that is well tested and provides a standard set of functions for dealing with endianness across many compilers and platforms?

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  • Extending existing Class in Symfony

    - by Dar Hamid
    I am new to symfony. I have created a registration form using the code: $user = new Register(); $form = $this->createForm(new RegisterType(), $user); In the RegisterType class i have 5 fields (for example).I store the values in database when the user registers with the system. Now I display the EDIT page using following code: $user = $em->getRepository('MysiteUserBundle:Register')->find($id); $form = $this->createForm(new RegisterType(), $user); The problem with the EDIT code however is that it displays me all of the fields mentioned in RegisterType class.Is it possible to display only some fields. If yes how can this be achieved. Any help will be appreciated

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  • QT clicked signal dosnt work on QStandardItemModel with tree view

    - by user63898
    Hello i have this code in QT and all i want to to catch the clicked event when some one clicking in one of the treeview rows without success here is my code: (parant is the qMmainwindow) m_model = new QStandardItemModel(0, 5, parent); // then later in the code i have proxyModel = new QSortFilterProxyModel; proxyModel->setDynamicSortFilter(true); setSourceModel(createMailModel(parent)); ui.treeView->setModel(proxyModel); ui.treeView->setSortingEnabled(true); ui.treeView->sortByColumn(4, Qt::DescendingOrder); // and my signal/slot looks like this but its not working //and im not getting eny clicked event fired connect(ui.treeView,SIGNAL(Clicked(const QModelIndex& ) ), this,SLOT( treeViewSelectedRow(const QModelIndex& ) ) ); also how can i debug QT signal/slots so i can see some debug massages printing when something is wrong ?

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  • fatal error F1002

    - by Ghazooo
    Hi , I have a Fortran 77 program code , I am using fortran power station on XP . I wrote this program because I am studying Master's degree in Mechanics , It is a very long Finite element method code. when I press the compile order it shows me the following message : "fatal error F1002: compiler is out of heap space in pass 2" I googled the problem , and found the following solutions : http://www.microsofttranslator.com/BV.aspx?ref=CSSKB&from=en&to=ar&a=http://support.microsoft.com/kb/112345/en-us?fr=1 But to be honest , I did not understand the solution !!! I think my code is good and clear . Does any one have any suggestions to solve this problem ?? please consider me as a very simple programmer. I will really appreciate that . Thanks in Advance Ghazooo

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  • Getting strange response on calling verifyReceipt to verify an in-app

    - by lostInTransit
    Hi I am making a call to verifyReceipt to validate an in-app purchase but am getting a very strange response (the response is b) The same code worked till some time back. But I stopped the app debugging while the trans was being verified at one point. From there on, the only response I get is b. I checked the code and it has nothing wrong. As I said, the same code worked till I stopped this trans mid-way. Any idea what could be wrong? Thanks.

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  • Twitter + OAuth Problem -- Cancel Button

    - by Adam Storr
    Hi everyone, I'm implementing OAuth to post on Twitter... which works perfectly. My issue is for those who entered the Twitter login area by accident and want to press the "Cancel" button. Unfortunately, the "Cancel" button is dismissed but then immediately reappears. Here is the code for the "Cancel" button: - (void)cancel:(id)sender { if ([_delegate respondsToSelector: @selector(OAuthTwitterControllerCanceled:)]) [_delegate OAuthTwitterControllerCanceled: self]; [self performSelector: @selector(dismissModalViewControllerAnimated:) withObject: (id) kCFBooleanTrue afterDelay: 0.0]; } I think what I need to do is put the right code in the viewDidDisappear area... the problem is I don't know what code to put in. Any help would be great! Thanks so much!

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  • What are the virtues of using XML comments in .NET?

    - by Michal Czardybon
    I can't understand the virtues of using XML comments. I know they can be converted into nice documentation external to the code, but the same can be achieved with the much more concise DOxygen syntax. In my opinion the XML comments are wrong, because: They obfuscate the comments and the code in general. (They are more difficult to read by humans). Less code can be viewed on a single screen, because "summary" and "/summary" take additional lines. They suggest that all method parameters have to be commented, whereas 90% of them are obvious and SHOULD be left not commented. The only problem I have with this is that my point of view seems to be in minority. Why?

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  • Cross Theaded Calls - Many controls Heavy GUI Application after .net 1.1 2.0 upgrade- best way ??

    - by keepsmilinyaar
    I have recently upgraded a .net1.1 solution to .net2.0. AS this is a very heavy GUI appilcation with loads of controls and many multithreaded operations that update the GUI. While these operations worked seamlessly in .net1.1 it is throwing up Cross Threaded Illegal operations after the upgrade. Considering the fact that tehre are numerous grids, buttons and status labels that need to be updated via these multi threaded operations, I decided to code for checking the InvokeRequired solution, however doing that for every control would probably not be the best way to go about it. I was wondering if you could suggest a better way of how I can go about it or propose any OOPS based class structure that I could code around to make the code look better. Please do let me know if my question is unclear. Thanks in advance

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  • Why do I get a "Day too big" error from Perl?

    - by azp74
    I have been helping someone debug some code where the error message was "Day too big". I know that this springs from localtime and the Y2038 bug (most google results appear to be people dealing with cookies expiring well into the future). We appear to have 'fixed' the problem by using time to get the current date. However, given that none of our original dates should have hit the 2038 issue I'm sceptical that we've actually fixed the problem ... Are there other instances that anyone knows of where one would hit "day too big"? OS is Solaris. Sample code - the actual code is quite large and the person I'm working with hasn't actually isolated the offending part (which is why I'm worried the 'fix' is not actually a fix). If I can put together something concise which reproduces the issue I will post!

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  • FORTRAN function returning an array causes a segfault (calling from C++)

    - by Dane Larsen
    Basically, here's my problem. I'm calling someone else's FORTRAN functions from my C++ code, and it's giving me headaches. Some code: function c_error_message() character(len = 255) :: c_error_message errmsg(1:9) = 'ERROR MSG' return end That's the FORTRAN function. My first question is: Is there anything in there that would cause a segfault? If not, then second: What does that return? A pointer? I'm trying to call it with the following C statement: char *e = c_error_message_(); That causes a segfault. c_error_message(); That too causes a segfault. I declared c_error_message_() earlier on with the following code: extern"C" { char* c_error_message_(); } Would declaring a function with a different return type than the actual return type cause a segfault? I'm at a loss. Thanks for any replies.

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  • summer experiment: GWT & python for a trading game- arch question

    - by sadhu_
    Hi, As a summer learning experiment, I'm thinking of coding up a web front end for a trading game i wrote in python, that generates share prices and random snippets of text. I am sort of struggling with how this should work on the back-end though. I'd rather have my GWT client page interact with the python share price generator, than to try and re-code it in java. I suppose i could use an sqlite db, and then use jdbc to pick up the prices, but i was wondering if there is a better way, for me to be able to poll some python script either from my client page, or from the serverside java code ? I found this python wrapper, but i'm not sure how i could use it though: http://code.google.com/apis/visualization/documentation/dev/gviz_api_lib.html Thanks.

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  • Winsock failed to connect to local ip address

    - by JKS
    I have used the following code in a form that acts like a server, WskServer(0).Close LocalIP = WskServer(0).LocalIP WskServer(0).LocalPort = DEFAULT_TCP_PORT WskServer(0).Protocol = sckTCPProtocol txtStatus.Text = "Starting server" Call WskServer(0).Bind(DEFAULT_TCP_PORT, LocalIP) WskServer(0).Listen when i execute above code,i received the following error "Address is not available from the local machine" . If i changed the line Call WskServer(0).Bind(DEFAULT_TCP_PORT, LocalIP) to Call WskServer(0).Bind(DEFAULT_TCP_PORT, "127.0.0.1") this is working What's wrong with the code?, can anybody give the fix Update I just removed the line Call WskServer(0).Bind(DEFAULT_TCP_PORT, LocalIP) now server working properly. this way is correct or not

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  • Use delegate for Projection in Linq to SQL

    - by Redeemed1
    I have code something like this in an IRepository implementation in Linq to Sql: var newlist = from h in list where h.StringProp1 == "1" select new MyBusinessBO{ firstProp = h.StringProp1, secondProp = h.StringProp2 }; The projection into MyBusinessBO is not difificult but when the Business Object has many properties the projection code becomes very lengthy. Also, as the projection can occur in several places in the Repository we break the DRY principle. Is there any way to abstract out the projection or replace it with a delegate? I.e. replace the code firstProp = h.StringProp1, secondProp = h.StringProp2 with something reusable?

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