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  • Seattle Code Camp 2010

    - by Liam McLennan
    Seattle Code Camp was a two-day intensive software development conference. Ostensibly a technology agnostic event the reality is that code camp continues to focus on Microsoft technologies. Notable exceptions were talks on Ruby and iPhone development. If you were not able to attend you can view all of the sessions online. Code Camp was a good opportunity to catch up with my friends from last weekend’s Alt.NET conference and also to participate in some great sessions.

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  • What guidelines do you suggest for using Objective-C Properties?

    - by adarsha
    Objective-C 2.0 introduced properties. While I personally think properties are nice addition to the language, I have seen a trend of making every instance variable as a property. Apple sample codes are no exceptions to this. I believe this is against the spirit of OOP, and since it exposes a lot more implementation details of a class to the client than they need to know. What guidelines do you suggest for the proper usage properties in Objective C?

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  • CryptographicException: The handle is invalid.

    - by Wil Peck
    More than once I have come across the issue where we have had a problem using an X509Cert from the certificate store.  Everything is configured properly in the certificate store but when we attempt to create the signature we end up with a cryptographic exception for no apparent reason. See CryptographicException: The handle is invalid post by Benoit Martin explains the problem and shows how this issue can be resolved. Technorati Tags: Exceptions,Help,Cryptography

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  • Google Python Class Day 2 Part 3

    Google Python Class Day 2 Part 3 Google Python Class Day 2 Part 3: Utilities: urls and HTTP, Exceptions. By Nick Parlante. Support materials and exercises: code.google.com From: GoogleDevelopers Views: 29 1 ratings Time: 25:51 More in Science & Technology

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  • Refresh resources in Windows Phone 7 app

    - by Eugene
    I have a Windows Phone app that relies on an XML data file that comes packaged with the app. In the next version of my app, the XML file will be updated, how do I update the data file once per app update? I thought I could change the file name in the isolated storage, but that would leave trash behind. I could also check for exceptions when I load the XML file, but are there any other, more elegant ways?

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  • Oracle Magazine, July/August 2008

    Oracle Magazine July/August features articles on business intelligence, Linux, green technology, Oracle OpenWorld, Oracle Advanced Compression, Oracle Total Recall, managing files, using database advisors, Linux kernel, page template consistency, handling exceptions, client result cache, and much more.

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  • Efficient inline templates and C++

    - by Darryl Gove
    I've talked before about calling inline templates from C++, I've also talked about calling inline templates efficiently. This time I want to talk about efficiently calling inline templates from C++. The obvious starting point is that I need to declare the inline templates as being extern "C": extern "C" { int mytemplate(int); } This enables us to call it, but the call may not be very efficient because the compiler will treat it as a function call, and may produce suboptimal code based on that premise. So we need to add the no_side_effect pragma: extern "C" { int mytemplate(int); #pragma no_side_effect(mytemplate) } However, this may still not produce optimal code. We've discussed how the no_side_effect pragma cannot be combined with exceptions, well we know that the code cannot produce exceptions, but the compiler doesn't know that. If we tell the compiler that information it may be able to produce even better code. We can do this by adding the "throw()" keyword to the template declaration: extern "C" { int mytemplate(int) throw(); #pragma no_side_effect(mytemplate) } The following is an example of how these changes might improve performance. We can take our previous example code and migrate it to C++, adding the use of a try...catch construct: #include <iostream extern "C" { int lzd(int); #pragma no_side_effect(lzd) } int a; int c=0; class myclass { int routine(); }; int myclass::routine() { try { for(a=0; a<1000; a++) { c=lzd(c); } } catch(...) { std::cout << "Something happened" << std::endl; } return 0; } Compiling this produces a slightly suboptimal code sequence in the hot loop: $ CC -O -xtarget=T4 -S t.cpp t.il ... /* 0x0014 23 */ lzd %o0,%o0 /* 0x0018 21 */ add %l6,1,%l6 /* 0x001c */ cmp %l6,1000 /* 0x0020 */ bl,pt %icc,.L77000033 /* 0x0024 23 */ st %o0,[%l7] There's a store in the delay slot of the branch, so we're repeatedly storing data back to memory. If we change the function declaration to include "throw()", we get better code: $ CC -O -xtarget=T4 -S t.cpp t.il ... /* 0x0014 21 */ add %i1,1,%i1 /* 0x0018 23 */ lzd %o0,%o0 /* 0x001c 21 */ cmp %i1,999 /* 0x0020 */ ble,pt %icc,.L77000019 /* 0x0024 */ nop The store has gone, but the code is still suboptimal - there's a nop in the delay slot rather than useful work. However, it's good enough for this example. The point I'm making is that the compiler produces the better code with both the "throw()" and the no side effect pragma.

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  • What is the best place to go to ask questions about Aptana RadRails environment and setup problems?

    - by larson4
    I am having some issues using RadRails and the RadRails support site is not getting me any answers (I've had questions up for days with no response which StackOverflow has conditioned me to find unacceptable!). Primarily I have questions about things like exceptions thrown when running the project or mismatches between instructions and reality. Can I ask these questions on Programmers.stackexchange? Or Stackoverflow? Or can anyone recommend an active RadRails forumn somewhere?

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  • Less than 50 Lines of Code to Create a Java Palette in NetBeans

    - by Geertjan
    Want to drag and drop Java code snippets into the palette, in the same way as can be done for HTML files? If so, create a new module and add a class with the content below and you're done. You'll be able to select a piece of Java code, drag it into the palette (Ctrl-Shift-8 to open it), where you'll be able to set a name, tooltip, and icons for the snippet, and then you'll be able to drag it out of the palette into any Java files you like. The palette content is persisted across restarts of the IDE. package org.netbeans.modules.javasourcefilepalette; import java.io.IOException; import javax.swing.Action; import org.netbeans.api.editor.mimelookup.MimeRegistration; import org.netbeans.spi.palette.DragAndDropHandler; import org.netbeans.spi.palette.PaletteActions; import org.netbeans.spi.palette.PaletteController; import org.netbeans.spi.palette.PaletteFactory; import org.openide.util.Exceptions; import org.openide.util.Lookup; import org.openide.util.datatransfer.ExTransferable; public class JavaSourceFileLayerPaletteFactory { private static PaletteController palette = null; @MimeRegistration(mimeType = "text/x-java", service = PaletteController.class) public static PaletteController createPalette() { try { if (null == palette) { return PaletteFactory.createPalette( //Folder: "JavaPalette", //Palette Actions: new PaletteActions() { @Override public Action[] getImportActions() {return null;} @Override public Action[] getCustomPaletteActions() {return null;} @Override public Action[] getCustomCategoryActions(Lookup lkp) {return null;} @Override public Action[] getCustomItemActions(Lookup lkp) {return null;} @Override public Action getPreferredAction(Lookup lkp) {return null;} }, //Palette Filter: null, //Drag and Drop Handler: new DragAndDropHandler(true) { @Override public void customize(ExTransferable et, Lookup lkp) {} }); } } catch (IOException ex) { Exceptions.printStackTrace(ex); } return null; } } In my layer file, I have this content: <folder name="JavaPalette"> <folder name="Snippets"/> </folder> That's all. Run the module. Open a Java source file and the palette will automatically open. Drag some code into the palette and a dialog will pop up asking for some details like display name and icons. Then the snippet will be in the palette and you'll be able to drag and drop it anywhere you like. Use the Palette Manager, which is automatically integrated, to add new categories and show/hide palette items. Related blog entry, for which the above is a big simplification: Drag/Drop Snippets into Palette .

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  • Keep getting SocketExceptions (6 replies)

    I am using the System.Net.Sockets.NetworkStream to read data from a network connection I keep getting exceptions #### Exception System.Net.Sockets.SocketException E FAIL (11) #### #### Microsoft.SPOT.Net.SocketNative::recv [IP: 0000] #### #### System.Net.Sockets.Socket::Receive [IP: 0018] #### #### System.Net.Sockets.NetworkStream::Read [IP: 005e] #### #### MFToolkit.Net.Web.HttpRequest::Read [IP:...

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  • How to configure dbus to allow ssh-user to suspend server?

    - by Produnis
    I try to suspend my server using dbus and UPower. The server runs Ubuntu LucidLynx 64bit. While everything works fine if I am sitting directly at the machine, it won't work via ssh. If I connect to the server via ssh and try to suspend the machine using dbus and upower, it gives back dbus.exceptions.DBusException: org.freedesktop.UPower.GeneralError: not authorized Could anyone please tell me how to configure dbus in order to allow ssh-users to suspend the machine?

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  • Stock Analysis and Moving Average with PowerPivot

    - by Marco Russo (SQLBI)
    One week ago Alberto Ferrari wrote a post about how to do working days calculation in PowerPivot . You might think this is necessary only for accounting department or something like that… but in reality the same techniques are really useful to implement calculations that might be useful when you want to implement some stock analysis using PowerPivot and Excel! As you might know, in PowerPivot it is important having a Dates table containing all the days, without exceptions. But when you manage stock...(read more)

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  • Viewing the NetBeans Central Registry

    - by Geertjan
    For some fun, create a TopComponent and then add this bit of code, with thanks to Toni Epple: add(new BeanTreeView(), BorderLayout.CENTER); try { myExplorerManager.setRootContext(DataObject.find(FileUtil.getConfigRoot()).getNodeDelegate()); } catch (DataObjectNotFoundException ex) { Exceptions.printStackTrace(ex); } Run the application and you'll see the NetBeans Central Registry a.k.a. System FileSystem) of the application you're running.

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  • Gui not showing when accessing AudioSource.Volume

    - by Lautaro
    I have A GuiManager class A SoundManager with 2 AudioSources SfxPlayer is created in the inspector on the same object as SoundManager MusicPlayer is created programatically within the SoundManager If i from anywhere in the GuiManager access the volume of MusicPlayer then all the Gui dissapears. Nothing is shown, not even the start menu. I dont get any errors or exceptions. I dont have any Try Catch statements. Anyone knows whats up?

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  • Software Architecture Analysis Method (SAAM)

    Software Architecture Analysis Method (SAAM) is a methodology used to determine how specific application quality attributes were achieved and how possible changes in the future will affect quality attributes based on hypothetical cases studies. Common quality attributes that can be utilized by this methodology include modifiability, robustness, portability, and extensibility. Quality Attribute: Application Modifiability The Modifiability quality attribute refers to how easy it changing the system in the future will be. This to me is a very open-ended attribute because a business could decide to transform a Point of Sale (POS) system in to a Lead Tracking system overnight. (Yes, this did actually happen to me) In order for SAAM to be properly applied for checking this attribute specific hypothetical case studies need to be created and review for the modifiability attribute due to the fact that various scenarios would return various results based on the amount of changes. In the case of the POS change out a payment gateway or adding an additional payment would have scored very high in comparison to changing the system over to a lead management system. I personally would evaluate this quality attribute based on the S.O.I.L.D Principles of software design. I have found from my experience the use of S.O.I.L.D in software design allows for the adoption of changes within a system. Quality Attribute: Application Robustness The Robustness quality attribute refers to how an application handles the unexpected. The unexpected can be defined but is not limited to anything not anticipated in the originating design of the system. For example: Bad Data, Limited to no network connectivity, invalid permissions, or any unexpected application exceptions. I would personally evaluate this quality attribute based on how the system handled the exceptions. Robustness Considerations Did the system stop or did it handle the unexpected error? Did the system log the unexpected error for future debugging? What message did the user receive about the error? Quality Attribute: Application Portability The Portability quality attribute refers to the ease of porting an application to run in a new operating system or device. For example, It is much easier to alter an ASP.net website to be accessible by a PC, Mac, IPhone, Android Phone, Mini PC, or Table in comparison to desktop application written in VB.net because a lot more work would be involved to get the desktop app to the point where it would be viable to port the application over to the various environments and devices. I would personally evaluate this quality attribute based on each new environment for which the hypothetical case study identifies. I would pay particular attention to the following items. Portability Considerations Hardware Dependencies Operating System Dependencies Data Source Dependencies Network Dependencies and Availabilities  Quality Attribute: Application Extensibility The Extensibility quality attribute refers to the ease of adding new features to an existing application without impacting existing functionality. I would personally evaluate this quality attribute based on each new environment for the following Extensibility  Considerations Hard coded Variables versus Configurable variables Application Documentation (External Documents and Codebase Documentation.) The use of Solid Design Principles

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  • Strict C++ guidelines [on hold]

    - by Banex
    Some time ago I ran across an answer here on Programmers that linked a Wikipedia page about some strict guidelines for C++. The only thing I remember is that it didn't allow exceptions and was in general very strict, and that it was used in many workplaces where most C++ features are not considered useful, or are not available (embedded systems, etc). I'd like to know the name of those guidelines, as I searched the whole internet without finding it.

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  • Hierachies....from the Top Down

    - by Joe G
    I've been struggling with how to write on the topic of the importance of hierarchy design.  It's not so much that hierarchies haven't always been important, it's more of that with Fusion, the timing of when the hierarchies are designed should take a higher priority.    I will attempt to explain..... When I was implementing applications, back in the day, we had the list of detailed account values to enter with the obvious parent accounts. Then, after the setup was complete and things were functioning, the reporting phase started.  Users explained the elements that they want on the reports, what totals should be included, and how things should be compared.  Frequently, there was at least one calculation that became a nightmare either because it was based on very specific things that didn't relate to anything else or because it was "hardcoded" so that when something changed, someone need to "fix" the report. With Fusion, the process changes slightly.  You still want to enter all of the detailed accounts, but before you start adding parent values, you should investigate the reporting requirements from the top-down.  It's better to build hierarchies based on the reporting requirements than it is to build reports based on random hierarchies. Build reports based on hierarchies that resemble the reports themselves, and maintain the hierarchies without rework of the reports. For example, if you look at an income statement, you may have line items for Material Costs, Employee Costs, Travel & Entertainment, and Total Operating Expenses.  In your hierarchy, you have detail values that roll up to Material Costs, Employee Costs, and Travel & Entertainment which roll up to Total Operating Expenses. Balances are stored automatically in the cube for each of these.  When you define the report, you pick each of these members - no calculations required.  If a new detail value is added, you simply add it to the hierarchy, and there is no need to modify the report. I realize that there are always exceptions that require special handling, but I am confident that you will end up with much fewer exceptions if you make reporting a priority and design your hierarchies from the top-down.

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  • Should back end processes be included in use cases in requirements document?

    - by bizso09
    We're writing a requirements document for our client and need to include the use cases of the system. We're following this template: ID Description Actors Precondition Basic Steps Alternate Steps Exceptions Business validations/Rules Postconditions In the Basic Steps section, should we include steps that the system performs in the back end or should we only include steps that the user directly interacts with? Example: Basic Steps for Search 1: User goes to search page User enters term User presses search System matches search term with database entries System displays results vs Basic Steps for Search 2: User goes to search page User enters term User presses search System displays results

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  • how to install oracle 10g xe on ubuntu 11.04

    - by ses
    I have read from here how to install oracle 10g xe in ubuntu 10.x but not in 11.04 (64 bit). But with 11.04 it does not work anymore because of dependency exceptions. So, how to install oracle 10g xe in ubuntu 11.04? I even found some variant how to fix it from here but in my case it does not work - the same exception take place: oracle-xe-universal:i386 depends on libc6 (= 2.3.2); however: Package libc6:i386 is not installed.

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  • JGridView

    - by Geertjan
    JGrid was announced last week so I wanted to integrate it into a NetBeans Platform app. I.e., I'd like to use Nodes instead of the DefaultListModel that is supported natively, so that I can integrate with the Properties Window, for example: Here's how: import de.jgrid.JGrid; import java.beans.PropertyVetoException; import javax.swing.DefaultListModel; import javax.swing.JScrollPane; import javax.swing.event.ListSelectionEvent; import javax.swing.event.ListSelectionListener; import org.book.domain.Book; import org.openide.explorer.ExplorerManager; import org.openide.nodes.Node; import org.openide.util.Exceptions; public class JGridView extends JScrollPane { @Override public void addNotify() { super.addNotify(); final ExplorerManager em = ExplorerManager.find(this); if (em != null) { final JGrid grid = new JGrid(); Node root = em.getRootContext(); final Node[] nodes = root.getChildren().getNodes(); final Book[] books = new Book[nodes.length]; for (int i = 0; i < nodes.length; i++) { Node node = nodes[i]; books[i] = node.getLookup().lookup(Book.class); } grid.getCellRendererManager().setDefaultRenderer(new OpenLibraryGridRenderer()); grid.setModel(new DefaultListModel() { @Override public int getSize() { return books.length; } @Override public Object getElementAt(int i) { return books[i]; } }); grid.setUI(new BookshelfUI()); grid.getSelectionModel().addListSelectionListener(new ListSelectionListener() { @Override public void valueChanged(ListSelectionEvent e) { //Somehow compare the selected item //with the list of books and find a matching book: int selectedIndex = grid.getSelectedIndex(); for (int i = 0; i < nodes.length; i++) { String nodeName = books[i].getTitel(); if (String.valueOf(selectedIndex).equals(nodeName)) { try { em.setSelectedNodes(new Node[]{nodes[i]}); } catch (PropertyVetoException ex) { Exceptions.printStackTrace(ex); } } } } }); setViewportView(grid); } } } Above, you see references to OpenLibraryGridRenderer and BookshelfUI, both of which are part of the "JGrid-Bookshelf" sample in the JGrid download. The above is specific for Book objects, i.e., that's one of the samples that comes with the JGrid download. I need to make the above more general, so that any kind of object can be handled without requiring changes to the JGridView. Once you have the above, it's easy to integrate it into a TopComponent, just like any other NetBeans explorer view.

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  • More about E-Business Suite Certifications

    - by Sadia2
    E-Business Suite certifications contained in My Oracle Support are modeled at the suite-level only. All products packaged within the Rapid Install release bundle follow the certification for that E-Business Suite release. Platform-specific certification exceptions are documented in the Installation and Upgrade Notes for each platform, available as links from the following Oracle Applications Documentation Resources notes: Oracle Applications Documentation Resources, Release 12 (Doc ID 394692.1) Oracle Applications Documentation Resources, Release 12.1 (Doc ID 790942.1)

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  • Keep getting SocketExceptions (6 replies)

    I am using the System.Net.Sockets.NetworkStream to read data from a network connection I keep getting exceptions #### Exception System.Net.Sockets.SocketException E FAIL (11) #### #### Microsoft.SPOT.Net.SocketNative::recv [IP: 0000] #### #### System.Net.Sockets.Socket::Receive [IP: 0018] #### #### System.Net.Sockets.NetworkStream::Read [IP: 005e] #### #### MFToolkit.Net.Web.HttpRequest::Read [IP:...

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  • Coded UI Test Method failed inconsistently

    - by Sunitha M
    The following exception failing my UI automation test. Message: Test method CodedUITestMethod1 throw exception: The playback failed to find the control with the given search properties. Additional Details: TechnologyName: 'UIA' ControlType: 'MenuItem' Name: 'MyViewModel' ---> system.runtime.interopservices.comexception error hresult e_fail has been returned from a call to a COM component please any one give me a solution for these type of exceptions.

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  • Parallel Tasks in .NET 3.0

    Provide a mechanism to execute a list of tasks in parallel on multiple threads and communicate back to the calling thread useful state such as exceptions, timeouts and successful task completion.

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