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  • Why does my program occasionally segfault when out of memory rather than throwing std::bad_alloc?

    - by Bradford Larsen
    I have a program that implements several heuristic search algorithms and several domains, designed to experimentally evaluate the various algorithms. The program is written in C++, built using the GNU toolchain, and run on a 64-bit Ubuntu system. When I run my experiments, I use bash's ulimit command to limit the amount of virtual memory the process can use, so that my test system does not start swapping. Certain algorithm/test instance combinations hit the memory limit I have defined. Most of the time, the program throws an std::bad_alloc exception, which is printed by the default handler, at which point the program terminates. Occasionally, rather than this happening, the program simply segfaults. Why does my program occasionally segfault when out of memory, rather than reporting an unhandled std::bad_alloc and terminating?

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  • Why does this textbox binding example work in WPF but not in Silverlight?

    - by Edward Tanguay
    Why is it in the following silverlight application that when I: change the default text in the first textbox move the cursor to the second text box (i.e. take focus off first textbox) click the button that inside the button handler, it still has the old value "default text"? What do I have to do to get the binding to work in Silverlight? The same code works fine in WPF. XAML: <UserControl x:Class="TestUpdate123.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480"> <StackPanel Margin="10" HorizontalAlignment="Left"> <TextBox Text="{Binding InputText}" Height="200" Width="600" Margin="0 0 0 10"/> <StackPanel HorizontalAlignment="Left"> <Button Content="Convert" Click="Button_Convert_Click" Margin="0 0 0 10"/> </StackPanel> <TextBox Height="200" Width="600" Margin="0 0 0 10"/> <TextBlock Text="{Binding OutputText}"/> </StackPanel> </UserControl> Code Behind: using System.Windows; using System.Windows.Controls; using System.ComponentModel; namespace TestUpdate123 { public partial class MainPage : UserControl, INotifyPropertyChanged { #region ViewModelProperty: InputText private string _inputText; public string InputText { get { return _inputText; } set { _inputText = value; OnPropertyChanged("InputText"); } } #endregion #region ViewModelProperty: OutputText private string _outputText; public string OutputText { get { return _outputText; } set { _outputText = value; OnPropertyChanged("OutputText"); } } #endregion public MainPage() { InitializeComponent(); DataContext = this; InputText = "default text"; } private void Button_Convert_Click(object sender, RoutedEventArgs e) { OutputText = InputText; } #region INotifiedProperty Block public event PropertyChangedEventHandler PropertyChanged; protected void OnPropertyChanged(string propertyName) { PropertyChangedEventHandler handler = PropertyChanged; if (handler != null) { handler(this, new PropertyChangedEventArgs(propertyName)); } } #endregion } }

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  • What combination of project-management software will meet my just-started project's needs?

    - by taz
    Hello all, I have a got couple of software projects that I want to run with my friends(max 10 persons) privately(at least for now). But I'm kind of lost between software management systems. I am not even sure about the definitions of my needs. Dear all, what is the definition/name of the system/software that meets my needs listed below? Continuous Integration? And please suggest me a good ALL-IN-ONE instance of it: project roadmap/planning project resource(people) allocation project issue&bug tracking project mailing list project forum project wiki source control server source control client repository change notifier client build system(like scons) nightly build automation IDE integration(VS) Note: I tried Redmine and liked it, but found it kind of slow. All-in-one kind ones will be the most appreciated but if your suggestion includes more than 3 softwares, please suggest me the ones that work together painlessly. thanks in advance..

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  • Java: charAt convert to int?

    - by sling
    Hi, I would like to key in my nirc number eg.S1234567I and then put 1234567 individualy as a integer as indiv1 as charAt(1), indiv2 as charAt(2), indiv as charAt(3), etc. However, when I do as the codes below, I cant seem to get even the first the number out? Any idea? Scanner console = new Scanner(System.in); System.out.println("Enter your NRIC number: "); String nric = console.nextLine(); int indiv1 = nric.charAt(1); System.out.println(indiv1);

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  • Bypass using Alter Access Mappings for to Open Web from SPItemEventProperties

    - by Greg Ogle
    In the following code, // class overrides SPItemEventreceiver public override void ItemAdding(SPItemEventProperties properties) { using (var site = new SPSite(properties.SiteId)) //SiteId is integer { ... } } The following exception is thrown: System.IO.FileNotFoundException: The Web application at http://URL could not be found. Verify that you have typed the URL correctly. If the URL should be serving existing content, the system administrator may need to add a new request URL mapping to the intended application. One way to work around this is to hard-code (or configure) the URL specified in Alternate Access Mappings. Putting the correct URL in Alternate Access Mappings is ultimately the correct solution, but if possible, I need a work-around that doesn't require configuration.

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  • Get ANSI-colored output from external command

    - by German Rumm
    I am writing a small script for watchr that runs my PHP unit tests. Current script runs tests using system() and displays them colored. I am trying to add libnotify functionality, but for that I need to parse the output and match against regexp, so that notification will either display green or red. system() doesn't return output, %x does return, but puts p doesn't display colors, which I need to quickly see which test failed. One option would be to run tests twice - once for display in terminal window, and second time for checking which notification to show, but I would rather avoid it.

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  • How to get repository for core-plot

    - by Omar
    I am not able to get the repository for core-plot. What I am doing is that I am typing this in the terminal: hg clone https://core-plot.googlecode.com/hg/ core-plot and this is what I get: Traceback (most recent call last): File "/usr/local/bin/hg", line 25, in mercurial.util.set_binary(fp) File "/Library/Python/2.5/site-packages/mercurial/demandimport.py", line 75, in __getattribute__ self._load() File "/Library/Python/2.5/site-packages/mercurial/demandimport.py", line 47, in _load mod = _origimport(head, globals, locals) File "/Library/Python/2.5/site-packages/mercurial/util.py", line 93, in _encoding = locale.getlocale()[1] File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/locale.py", line 460, in getlocale return _parse_localename(localename) File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/locale.py", line 373, in _parse_localename raise ValueError, 'unknown locale: %s' % localename ValueError: unknown locale: UTF-8 I can't seem to get it to install. Please give me guidance on how to install the repository.

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  • Find selected WPF Listbox entries

    - by wonea
    I've been trying iterate through the selected items of a listbox in WPF, with the following code; try { for (int i = 0; i < mylistbox.SelectedItems.Count; i++) { ListItem li = (ListItem)mylistbox.SelectedItems[i]; string listitemcontents_str = li.ToString(); } } catch(Exception e) { // Error appears here string error = e.ToString(); } However I receive an invalid cast exception; System.InvalidCastException: Unable to cast object of type 'mylist' to type 'System.Windows.Documents.ListItem'. Is there a way around this?

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  • Linux based MS Office thumbnail generation

    - by El Yobo
    I've been taken on board to work on a PHP based web application. One part of the application generates thumbnail images for MS Office documents on demand, and it uses MS Office + the VeryPDF docprint utility to do this. Because of this one requirement, the system is running on Windows Server 2003 + IIS. I would prefer to have the system running on a Linux server, rather than MS, as I have far more experience in administering Linux systems than Windows and we have no other in-house technical staff. Does anyone know a way to handle the document conversion using native Linux software? I would love something PHP native, but am willing to look outside that if necessary. Thanks for your suggestions.

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  • CSS: set font weight depending on fallback font

    - by mikez302
    I am trying to set the font-weight for an element based on the font that gets chosen. For example, I may be trying to do something like this: h1 { font-family: Arial Narrow, Impact, sans-serif; font-weight: ?; } Let's say I want the font-weight to be "bold" if the user has Arial Narrow installed on their system, but "normal" if the browser has to use Impact, and maybe "bold" if the user's system has neither of those fonts. Is this possible? If so, how would I go about doing this?

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  • Android - cant read TXT files from SDcard on real mashine?

    - by JustMe
    Hello! When I run the code bellow in the virtual android (1.5) it works well, TextSwitcher shows first 80 chars from each txt file from /sdcard/documents/ , but when I run it on my Samsung Galaxy i7500 (1.6) there are no contents in TextSwitcher, however in LogCat there are FileNames of txt files. My Code: public void getTxtFiles(){ //Scan /sdcard/documents and put .txt files in array File TxtFiles[] String path = Environment.getExternalStorageDirectory().toString()+"/documents/"; String files; File folder = new File(path); if(folder.exists()==false){if (!folder.mkdirs()) { Log.e("TAG", "Create dir in sdcard failed"); return; }} else{ File listOfFiles[] = folder.listFiles(); for (int i = 0; i < listOfFiles.length; i++) { if (listOfFiles[i].isFile()) { files = listOfFiles[i].getName(); if (files.endsWith(".txt") || files.endsWith(".TXT")) { if((files.length()-1)>i){resizeArray(TxtFiles, files.length()+10);} TxtFiles[i]=listOfFiles[i]; System.out.println(TxtFiles[i]); } } }} } private void updateCounter(int Pozicija) { if(Pozicija<0){Toast.makeText(getApplicationContext(), R.string.LastTxt, 5).show(); mCounter++;} else if(TxtFiles[mCounter]!=null){ TextToShow = getContents(TxtFiles[mCounter]); if(TextToShow.length()>80)TextToShow=TextToShow.substring(0, 80); mSwitcher.setText(TextToShow); System.out.println(Pozicija); } else mCounter--; } static public String getContents(File aFile) { //...checks on aFile are elided StringBuilder contents = new StringBuilder(); try { //use buffering, reading one line at a time //FileReader always assumes default encoding is OK! BufferedReader input = new BufferedReader(new FileReader(aFile)); try { String line = null; //not declared within while loop /* * readLine is a bit quirky : * it returns the content of a line MINUS the newline. * it returns null only for the END of the stream. * it returns an empty String if two newlines appear in a row. */ while (( line = input.readLine()) != null){ contents.append(line); contents.append(System.getProperty("line.separator")); } } finally { input.close(); } } catch (IOException ex){ ex.printStackTrace(); } return contents.toString(); } And I am able to write contents of those files though LogCat! Any ideas?

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  • why java application not working after applying "web look and feel" theme?

    - by Vasu
    I have developed "Employee Management System" java project .For improving the ui appearance i have integrated "web look and feel" into my application.Theme is applied correctly. But here the problem arises: At first i have runned the java application without connecting to oracle data base,application have runned and worked perfectly. But when i connected the application to oracle database and runned again the application is taking more time to open and getting strucked. Code: For applying theme try { WebLookAndFeel.install(); }catch(Exception ex){ ex.printStackTrace(); } Code for Connecting DataBase: if (con == null) { File sd = new File(""); File in = new File(sd.getAbsolutePath() + File.separator + "conf.properties"); File dir = new File(sd.getAbsolutePath() + File.separator + "conf.properties"); if (!dir.exists()) { // dir.mkdir(); dir.createNewFile(); Properties pro = new Properties(); pro.load(new FileInputStream(in)); pro.setProperty("driverclass", "oracle.jdbc.driver.OracleDriver"); pro.setProperty("url", "jdbc:oracle:thin:@192.168.1.1:1521:main"); pro.setProperty("username", "gb16"); pro.setProperty("passwd", "gb16"); try { FileOutputStream out = new FileOutputStream(in); pro.store(out, "Human Management System initialization properties"); out.flush(); out.close();} catch(Exception e) { e.printStackTrace(); } } else { // System.out.println("Already exists "); } Properties pro = new Properties(); pro.load(new FileInputStream(in)); Class.forName(pro.getProperty("driverclass")); con = DriverManager.getConnection(pro.getProperty("url"), pro.getProperty("username"), pro.getProperty("passwd")); st = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE); st = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE); } else { return con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE); } without the theme the application with connected to database working correctly. Please help me in solving this issue. Thanks in advance..

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  • Preventing Spoofing with Paypal

    - by wcpro
    I have a scenario where i need to have a user checkout through PayPal and then once we receive the payment then we create a membership record in our membership site. The PayPal requires a "return" field when you submit the form button that will take the user back to our page once the order has been successfully processed. On that page is where we actually track the sale and fire a chunk of javascript to track the sale. So my question is this, how can i make sure that the return page comes from PayPal and is not spoofed by a user in the system. I know there is a way to use the notify_url to have PayPal post back to our system, but in this case i have to run a chunk of javascript. Is there an easy way to do this, or would i have to write some looping/timeout function that checks to see if the notify post has come through? Im using .net to do the posting to paypal

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  • Output on namespaced xpath

    - by user347928
    Hi there, I have the following code and have had some trouble with a specific field and it's output. The namespace is connected but doesn't seem to be outputting on the required field. Any info on this would be great. import org.w3c.dom.Document; import org.xml.sax.SAXException; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.ParserConfigurationException; import javax.xml.xpath.XPathFactory; import javax.xml.xpath.XPath; import javax.xml.xpath.XPathExpressionException; import java.io.ByteArrayInputStream; import java.io.IOException; public class test { public static void main(String args[]) { String xmlStr = "<aws:UrlInfoResponse xmlns:aws=\"http://alexa.amazonaws.com/doc/2005-10-05/\">\n" + " <aws:Response xmlns:aws=\"http://awis.amazonaws.com/doc/2005-07-11\">\n" + " <aws:OperationRequest>\n" + " <aws:RequestId>blah</aws:RequestId>\n" + " </aws:OperationRequest>\n" + " <aws:UrlInfoResult>\n" + " <aws:Alexa>\n" + " <aws:TrafficData>\n" + " <aws:DataUrl type=\"canonical\">harvard.edu/</aws:DataUrl>\n" + " <aws:Rank>1635</aws:Rank>\n" + " </aws:TrafficData>\n" + " </aws:Alexa>\n" + " </aws:UrlInfoResult>\n" + " <aws:ResponseStatus xmlns:aws=\"http://alexa.amazonaws.com/doc/2005-10-05/\">\n" + " <aws:StatusCode>Success</aws:StatusCode>\n" + " </aws:ResponseStatus>\n" + " </aws:Response>\n" + "</aws:UrlInfoResponse>"; DocumentBuilderFactory xmlFact = DocumentBuilderFactory.newInstance(); xmlFact.setNamespaceAware(true); DocumentBuilder builder = null; try { builder = xmlFact.newDocumentBuilder(); } catch (ParserConfigurationException e) { e.printStackTrace(); } Document doc = null; try { doc = builder.parse( new ByteArrayInputStream( xmlStr.getBytes())); } catch (SAXException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } System.out.println(doc.getDocumentElement().getNamespaceURI()); System.out.println(xmlFact.isNamespaceAware()); String xpathStr = "//aws:OperationRequest"; XPathFactory xpathFact = XPathFactory.newInstance(); XPath xpath = xpathFact.newXPath(); String result = null; try { result = xpath.evaluate(xpathStr, doc); } catch (XPathExpressionException e) { e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates. } System.out.println("XPath result is \"" + result + "\""); } } Thanks Tony

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  • Eclipse Java code Format

    - by Jayesh
    I am not that much aware of Eclipse Shortcuts. I copied code from some link and I pasted in Eclipse Indigo but it is coming like "public String doLogin() throws ApplicationException{ long executionStartTime = System.cu... }" I want to format it in java style like public String doLogin() throws ApplicationException{ long executionStartTime = System.cu... } I google it and found few shortcuts like, "Shift + Tab" , "Ctrl + I", "Ctrl + Shift + F". but is not giving me the behavior I want. is there I need to add custom formatter or I am expecting more.

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  • Implementation of APIs on diferent platforms

    - by b-gen-jack-o-neill
    OK, this is basicly just about any non-default OS API running on all different OS. But for my example let´s consider platform Windows, API SDL (Simple DirectMedia Layer). Actually this question came to my mind when I was reading about SDL. Originally, I thought that on Windows (and basicly any other OS) you must use OS API to make certain actions, like wrtiting to screen, creating window and so on, becouse that API knows what kernel calls and system subroutines calls it has to do. But when I read about SDL, I surprised me, becouse, you cannot make computer to do anything more than OS can, since you cannot acess HW directly, only thru OS API, from Console allocation to DirectX. So, my question actually is, how does this not-default-OS APIs work? Do they use (wrap) original system API (like MFC wraps win32 api)? Or, do they actually have direct acess to Windows kernel? Or is there any third, way in between? Thanks.

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  • Getting data from a ListView into an array

    - by Joe
    I have a ListView control on my form set up like this in details mode: What I would like to do, is get all the values of the data cells when the user presses the Delete booking button. So using the above example, my array would be filled with this data: values(0) = "asd" values(1) = "BS1" values(2) = "asd" values(3) = "21/04/2010" values(4) = "2" This is my code so far: Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim items As ListView.SelectedListViewItemCollection = _ Me.ManageList.SelectedItems Dim item As ListViewItem Dim values(0 To 4) As String Dim i As Integer = 0 For Each item In items values(i) = item.SubItems(i).Text i = i + 1 Next End Sub But only values(0) gets filled with the first data cell of the selection (in this case "asd") and the rest of the array entries are blank. I have confirmed this with a breakpoint and checked the array entries myself. I'm REALLY lost on this, and have been trying for about an hour now. Any help would be appreciated, thanks :) Also please note that there can only be one row selection at once. Thanks.

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  • postgres SQL - pg_class question

    - by Sachin Chourasiya
    PostgreSQL stores statistics about tables in the system table called pg_class. The query planner accesses this table for every query. These statistics may only be updated using the analyze command. If the analyze command is not run often, the statistics in this table may not be accurate and the query planner may make poor decisions which can degrade system performance. Another strategy is for the query planner to generate these statistics for each query (including selects, inserts, updates, and deletes). This approach would allow the query planner to have the most up-to-date statistics possible. Why postgres always rely on pg_class instead?

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  • Need help helping in converting jquery, ajax, json and asp.net

    - by Haja Mohaideen
    I am tying out this tutorial, http://www.ezzylearning.com/tutorial.aspx?tid=5869127. It works perfectly. What I am now trying to do is to host the aspx contents as html file. This html file is hosted on my wampserver which is on my laptop. The asp.net code hosted on my test server. When I try to access, I get the following error, Resource interpreted as Script but transferred with MIME type text/html: "http://201.x.x.x/testAjax/Default.aspx/AddProductToCart?callback=jQuery17103264484549872577_1346923699990&{%20pID:%20%226765%22,%20qty:%20%22100%22,%20lblType:%20%2220%22%20}&_=1346923704482". jquery.min.js:4 Uncaught SyntaxError: Unexpected token < I am not sure how to solve this problem. index.html code $(function () { $('#btnAddToCart').click(function () { var result = $.ajax({ type: "POST", url: "http://202.161.45.124/testAjax/Default.aspx/AddProductToCart", crossDomain: true, data: '{ pID: "6765", qty: "100", lblType: "20" }', contentType: "application/json; charset=utf-8", dataType: "jsonp", success: succeeded, failure: function (msg) { alert(msg); }, error: function (xhr, err) { alert(err); } }); }); }); function succeeded(msg) { alert(msg.d); } function btnAddToCart_onclick() { } </script> </head> <body> <form name="form1" method="post"> <div> <input type="button" id="btnAddToCart" onclick="return btnAddToCart_onclick()" value="Button" /> </div> </form> aspx.vb Imports System.Web.Services Imports System.Web.Script.Services <ScriptService()> Public Class WebForm1 Inherits Page Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Session("test") = "" End Sub <WebMethod()> <ScriptMethod(UseHttpGet:=False, ResponseFormat:=ResponseFormat.Json)> Public Shared Function AddProductToCart(pID As String, qty As String, lblType As String) As String Dim selectedProduct As String = String.Format("+ {0} - {1} - {2}", pID, qty, lblType) HttpContext.Current.Session("test") += selectedProduct Return HttpContext.Current.Session("test").ToString() End Function End Class

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  • Compiling a class using Java code using process

    - by Noona
    I have this piece of code that compiles a class called tspClassName, when I compile using this code: Process compileProc = null; try { compileProc = Runtime.getRuntime().exec("javac -classpath ." + File.separator + "src" + File.separator + File.separator + "generated." + tspClassName + ".java -d ." + File.separator + "bin"); // catch exception if (compileProc.exitValue() != 0) { System.out.println("Compile exit status: " + compileProc.exitValue()); System.err.println("Compile error:" + compileProc.getErrorStream()); it outputs this: "Compile exit status: 2 Compile error:java.io.FileInputStream@17182c1" The class tspClassName.java compiles without errors otherwise, so I am guessing it has to do with the path,and in my eclipse project, the tspClassName.java resides in package homework4.generated inside src, is there something wrong with the path that I use in the code? thanks

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  • ASP.NET Controls Not Recognized

    - by Liam
    I just installed the release version of Visual Studio 2010, and it looks like there's something wrong with the standard ASP.NET server controls. When I create a basic server control, such as a TextBox, the editor underlines it in green and says (I also get no intellisense for ASP.NET controls): Element 'TextBox' is not a known element. This can occur if there is a compilation error in the Web site, or the Web.config file is missing. The web site builds fine, and the Web.config file is not missing: <?xml version="1.0"?> <configuration> <system.web> <compilation debug="false" targetFramework="4.0" /> </system.web> </configuration> The controls work just fine in the code-behind, and they function correctly when I run the site. Is there some configuration problem here?

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  • Getting a ReturnValue from cmd.Parameters in c#?

    - by mark smith
    Hi, I have just finished converted a vb.net app to c# and one of the lines is to get @ReturnValue from the parameter. I ended up having to CAST a lot of things.. Is there not a easier way here is what i have int rc = ((System.Data.SqlTypes.SqlInt32)(((System.Data.SqlClient.SqlParameter)(cmd.Parameters["@ReturnValue"])).SqlValue)).Value; In vb.net it was as simple as doing this Dim rc As Integer = Convert.ToInt32(cmd.Parameters("@ReturnValue").Value) Alot easier :-) But the problem with C# is the property Value isn't available unless I Cast to SqlParameter and i also need to cast to Sqltypes.SqlInt32 - i can't just do a standard Convert.ToInt32

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