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  • memory alignment issues with union

    - by confucius
    Hi all, Is there guarantee, that memory for this object will be properly aligned if we create this object of this type in stack? union my_union { int value; char bytes[4]; }; If we create char bytes[4] in stack and then try to cast it to integer there might be alignment problem. We can avoid that problem by creating it in heap, however, is there such guarantee for union objects? Logically there should be, but I would like to confirm. Thanks.

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  • ASP.NET 1.0 site error after upgrade to VS.NET 2010

    - by Keith
    Help. I installed VS.NET 2010 and now my existing ASP.NET MVC application won't run. I checked that the 1.0 version of System.Web.Mvc is still referenced but when I browse my application, I get an error like this: "Compiler Error Message: CS1579: foreach statement cannot operate on variables of type 'object' because 'object' does not contain a public definition for 'GetEnumerator'". My partial view has this declaration: <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<List<ProductModel" %> //various import statements <div <% foreach (var category in Model.Categories) { % <span<%= category.Name %</span <span<%= category.Market%</span <% } % </div For what it's worth, the source view shows ViewUserControl in red and gives a tool tip reading "Cannot resolve symbol 'ViewUserControl'". My working code didn't change, the only delta is that I upgraded to VS.NET 2010 (which includes MVC 2.0); I'm sure something is not referenced correctly but I cannot figure out what's going on.

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  • Powershell GUI: Adding multiple instances of .tooltipseperate to menu

    - by obious
    So, I'm having a problem whereby for some reason I can only add one instance of a .tooltipseperator to a drop down menu. E.g. I have to create a new .tooltipseperator if I want to add another to a different menu list. I have this: $seperator = new-object System.Windows.Forms.Toolstripseparator $seperator1 = new-object System.Windows.Forms.Toolstripseparator which correlates to this: [Void]$packages_menu_bar.DropDownItems.Add($seperator1) [Void]$packages_menu_bar.DropDownItems.Add($Remove_from_AD) [Void]$process.DropDownItems.Add($Kill_process) [Void]$process.DropDownItems.Add($seperator) My question is this: how can I add the same instance on a .tooltipseperater to different menu items? Some sort of array? Thanks

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  • What is the equivalent to IScriptControl for Web.UI.Page?

    - by Jeff Dege
    We've been using IScriptControl to tie javascript objects to our UserControls and ServerControls, and it's worked fine. The problem is that ASP.NET seems to provide no method to tie a javascript object to a Page. Up to now, we've been putting plain functions in the global namespace, but I am developing a serious allergy to that practice. It'd be easy enough to wrap our functions into a javascript class, and to include the javascript file on the page, but how to instantiate the object, how to reference it from callback events, and how to pass data to it from the code-behind, I haven't figured out. Or rather, the methods we've been using up to now (hidden fields, emitted javascript strings, etc.), really bug me. Anyone have better ideas?

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  • dynamically generated pageview issue

    - by user203127
    hi, I have created dynamic tab function. When i create dynamic tab it will create pageview for that tab. But when i deleted that tab that pageview is not deleting. Can any one help me to fix this. using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using Telerik.WebControls; using Telerik; public partial class Radstrip2 : System.Web.UI.Page { protected System.Web.UI.WebControls.Label PageContent; protected System.Web.UI.WebControls.Repeater BuildingSummary; protected Telerik.WebControls.PageView PageView1; protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { Tab tab = new Tab(); tab.Text = string.Format("New Page {0}", 1); RadTabStrip1.Tabs.Add(tab); PageView pageView = new PageView(); RadMultiPage1.PageViews.Add(pageView); BuildPageViewContents(pageView, RadTabStrip1.Tabs.Count); RadTabStrip1.SelectedIndex = 0; } } private void BuildPageViewContents(PageView pageView, int index) { pageView.ID = "Page " + index.ToString(); pageView.Controls.Add(new LiteralControl(" <B>New page</B>" + (index).ToString())); } protected void Button1_Click(object sender, EventArgs e) { Tab tab = new Tab(); tab.Text = string.Format("New Page {0}", RadTabStrip1.Tabs.Count + 1); RadTabStrip1.Tabs.Add(tab); PageView pageView = new PageView(); pageView.ID = "Page " + pageView.Index.ToString(); RadMultiPage1.PageViews.Add(pageView); BuildPageViewContents(pageView, RadTabStrip1.Tabs.Count); RadTabStrip1.SelectedIndex = RadTabStrip1.SelectedIndex + 1; RadMultiPage1.SelectedIndex = RadTabStrip1.SelectedIndex; } protected void Button2_Click(object sender, EventArgs e) { Tab currentTab = RadTabStrip1.InnerMostSelectedTab; if (currentTab != null) { ITabContainer owner = currentTab.Owner; owner.Tabs.Remove(currentTab); //RadMultiPage1.PageViews.Remove(currentTab.PageView); if (owner.Tabs.Count > 0) { owner.SelectedIndex = 0; } } } protected void RadMultiPage1_PageViewItemCreated1(PageView view, int viewIndex) { BuildPageViewContents(view, viewIndex + 1); } }

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  • How can the javascript plugin architecture in raphael/jquery be done?

    - by TimDog
    I'm looking for a barebones javascript example that demonstrates how the javascript plugin architecture works with large javascript libraries (such as raphael or jquery). In either scenario, you build plugins by ensuring your custom plugin follows this pattern: jQuery.fn.pluginName -- so assume I have a library: myLibrary = (function() { //my fancy javascript code return function() { //my return object }; }); How would fn be incorporated into the above myLibrary object to ensure that he resulting plugin is callable? I instantiate myLibrary like so: var lib = new myLibrary(); And now I have included a reference to my plugin in my page: myLibrary.fn.simplePlugin = function() { //more fancy code } So finally, I can just call: lib.simplePlugin(); Basically, what magic is actually occuring when the .fn is used during the creation of the plugin?

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  • How do I find useful code previously deleted but still stored in source control?

    - by sharptooth
    Whenever someone asks what to do with code that is no longer needed the answer is usually "delete it, restore it from source control if you need it back". Now how do I find that piece of source code in the repository? Let's limit scope to SVN for simplicity - I suspect that using any other source control system will not make much difference in this aspect (correct me if I'm wrong). If I delete that code and commit the changes it will no longer be in the latest revision. How do I find it without exporting each revision and searching thoroughly (which is nearly impossible)?

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  • SQLAlchemy automatically converts str to unicode on commit

    - by Victor Stanciu
    Hello, When inserting an object into a database with SQLAlchemy, all it's properties that correspond to String() columns are automatically transformed from <type 'str'> to <type 'unicode'>. Is there a way to prevent this behavior? Here is the code: from sqlalchemy import create_engine, Table, Column, Integer, String, MetaData from sqlalchemy.orm import mapper, sessionmaker engine = create_engine('sqlite:///:memory:', echo=False) metadata = MetaData() table = Table('projects', metadata, Column('id', Integer, primary_key=True), Column('name', String(50)) ) class Project(object): def __init__(self, name): self.name = name mapper(Project, table) metadata.create_all(engine) session = sessionmaker(bind=engine)() project = Project("Lorem ipsum") print(type(project.name)) session.add(project) session.commit() print(type(project.name)) And here is the output: <type 'str'> <type 'unicode'> I know I should probably just work with unicode, but this would involve digging through some third-party code and I don't have the Python skills for that yet :)

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  • Can I add custom methods/attributes to built-in Python types?

    - by sfjedi
    For example—say I want to add a helloWorld() method to Python's dict type. Can I do this? JavaScript has a prototype object that behaves this way. Maybe it's bad design and I should subclass the dict object, but then it only works on the subclasses and I want it to work on any and all future dictionaries. Here's how it would go down in JavaScript: String.prototype.hello = function() { alert("Hello, " + this + "!"); } "Jed".hello() //alerts "Hello, Jed!" Here's a useful link with more examples— http://www.javascriptkit.com/javatutors/proto3.shtml

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  • Good way to make Authentication and Authorization information available between application layers

    - by DutrowLLC
    I have a web application running on Google App Engine (GAE) for JAVA. I'm authenticating the client at the Servlet layer but would like to make the client information available to my business and data layers without having to pass the client object through the arguments of every single function. I'm considering setting up a "session" type object using ThreadLocal. That way any function can just say something like: CurrentUser.getRoles(); Is this a good way to do this or is there something else that is a more accepted solution? Thanks!

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  • Converting a jQuery plugin to work on all objects, not just the DOM

    - by Jon Winstanley
    I am using the jQuery physics plugin for a pet project I am working on. The plugin enables the moving of DOM objects in realistic ways using velocity, gravity, wind etc. However I want to use the plugin to calculate where objects are to be placed inside a canvas element, not DOM object. How do I change the plugin script to work for ANY object with 'top' and 'left' properties rather than only working with DOM objects found with a jQuery selector? Currently the script functions look like this: jQuery.fn.funname = function() { return this; };

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  • How Manage Big Linq DataContext ?

    - by Rev
    Hi The major problem in .net programs is "How manage memory for best performance". so Microsoft use garbage collector in .net and with that, we don't need to do something for managing memory(or better say we can use GC easily) But when you develop big project(business app), you make too many tables and database for your own project. so if you use Linq-to-sql, we must build DataContext include hundred or more tables. That make problem for program when you create an object from datacontext, that object give big amount of memory. also we cant divide datacontext to datacontexts(cuz relation between tables) so "How manage datacontext and memory"?

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  • getSelection() by Double Click or manual selection is not the same

    - by sanceray3
    Hi all, I allow me to ask a question, because I have a little probleme with an function which returns me the parent of a selection. $('input[type=button].btn_transform').click(function(){ var selectionObj = getSelected();//Function which gives me selection var theParent=selectionObj.anchorNode.parentNode; alert (theParent); }) For example with this sentence : "the cat is <strong>gray</strong>." If I select manually the word "gray" and click on my button, the function returns me [object HTMLSpanElement]. But if I select the same word by double clicking, the function returns me [object HTMLParagraphElement]. Do you know why ? Thanks a lot.

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  • Virtual Function Implementation

    - by Gokul
    Hi, I have kept hearing this statement. Switch..Case is Evil for code maintenance, but it provides better performance(since compiler can inline stuffs etc..). Virtual functions are very good for code maintenance, but they incur a performance penalty of two pointer indirections. Say i have a base class with 2 subclasses(X and Y) and one virtual function, so there will be two virtual tables. The object has a pointer, based on which it will choose a virtual table. So for the compiler, it is more like switch( object's function ptr ) { case 0x....: X->call(); break; case 0x....: Y->call(); }; So why should virtual function cost more, if it can get implemented this way, as the compiler can do the same in-lining and other stuff here. Or explain me, why is it decided not to implement the virtual function execution in this way? Thanks, Gokul.

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  • Why connection in Python's DB-API does not have "begin" operation?

    - by newtover
    Working with cursors in mysql-python I used to call "BEGIN;", "COMMIT;", and "ROLLBACK;" explicitly as follows: try: cursor.execute("BEGIN;") # some statements cursor.execute("COMMIT;") except: cursor.execute("ROLLBACK;") then, I found out that the underlying connection object has the corresponding methods: try: cursor.connection.begin() # some statements cursor.connection.commit() except: cursor.connection.rollback() Inspecting the DB-API PEP I found out that it does not mention the begin() method for the connection object, even for the extensions. Mysql-python, by the way, throws the Deprecation Warning, when you use the method. sqlite3.connection, for example, does not have the methd at all. And the question is why there is no such method in the PEP? Is the statement somehow optional, is it enough to invoke commit() instead?

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  • Please suggest some alternative to Drupal

    - by abovesun
    Drupal propose completely different approach in web development (comparing with RoR like frameworks) and it is extremely good from development speed perspective. For example, it is quite easy to clone 90% of stackoverflow functionality using Drupal. But it has several big drawbacks: it is f''cking slow (100-400 requests per page) db structure very complicated, need at least 2 tables for easy content (entity) type, CCK fields very easy generate tons of new db tables anti-object oriented, rather aspect-oriented bad "view" layer implementation, no strange forward layouts and so on. After all this items I can say I like Drupal, but I would like something same, but more elegant and more object oriented. Probably something like http://drupy.net/ - drupal emulation on the top of django. P.S. I wrote this question not for new holy word flame, just write if you know alternative that uses something similar approach.

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  • C#/.NET: Closing another process outside the main window

    - by eibhrum
    Hi, I just wanna ask your opinion/suggestion on how to 'terminate' a running application/process is C# Right now, I do have the following codes: Process myProcess; private void btnOpen_Click(object sender, RoutedEventArgs e) { DirectoryInfo di = new DirectoryInfo(System.Environment.GetFolderPath(Environment.SpecialFolder.Programs)); myProcess = Process.Start(di + @"\Wosk\Wosk.appref-ms"); // opening a file coming for Startup Menu } private void btnClose_Click(object sender, RoutedEventArgs e) { myProcess.Kill(); // not working - Cannot process request because the process has exited } I also tried myProcess.Close(); but nothing's happening.

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  • django search and filter in Google App Engine

    - by alexarsh
    Hi, I'm trying to add filter and search to my site. It's exactly the same code as in another working django project. The difference is that this time I do it with app engine. my views: http://slexy.org/view/s21GMw2sh1 I have 2 problems: 1.) I get error: "'Query' object has no attribute 'all'" on line 59 in views. As I understand it's something to do with the fact that GAE queryset is different from django queryset. How can I fix that? 2.) If I have 'search' in my request.GET I also fall on line 54 in my views. This is because I can't search by Q object in GAE, I guess. How can I fix that? Thanks, Alex A.

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  • ptrace'ing of parent process

    - by osgx
    Hello Can child process use the ptrace system call to trace its parent? Os is linux 2.6 Thanks. upd1: I want to trace process1 from "itself". It is impossible, so I do fork and try to do ptrace(process1_pid, PTRACE_ATTACH) from child process. But I can't, there is a strange error, like kernel prohibits child from tracing their parent processes UPD2: such tracing can be prohibited by security policies. Which polices do this? Where is the checking code in the kernel? UPD3: on my embedded linux I have no errors with PEEKDATA, but not with GETREGS: child: getregs parent: -1 errno is 1, strerror is Operation not permitted errno = EPERM

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  • How to get Combobox.SelectedItem Return string value of what is selected instead of Service Reference Class?

    - by Rohit Acharya
    I currently have the following code for a button. The message box shows SilverlightApplication2.ServiceReference2.Employee instead of the text string selected by the user. The combobox items are being populated by a WCF service. As a result I am unable to pass it to the Async call. How do I get the string of what user selected? private void btnAdd_Click(object sender, RoutedEventArgs e) { object selectedItem = comobo1.SelectedItem.ToString(); MessageBox.Show(selectedItem.ToString()); var proxy = new Service1Client(); proxy.GetAllEmployeesCompleted += proxy_GetAllEmployeesCompleted; proxy.GetAllEmployeesAsync(selectedItem.ToString()); }

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  • I am deploying a Silverlight APPlication that calls a WCF Service

    - by Rico
    It Runs It Loads but when it calls the service I get An exception occurred during the operation, making the result invalid. Check InnerException for exception details. at System.ComponentModel.AsyncCompletedEventArgs.RaiseExceptionIfNecessary() at SalesSimplicityPO_SL.POSvc.GetPurchaseOrdersCompletedEventArgs.get_Result() at SalesSimplicityPO_SL.About.mySvc_GetPurchaseOrdersCompleted(Object sender, GetPurchaseOrdersCompletedEventArgs e) at SalesSimplicityPO_SL.POSvc.POSvcClient.OnGetPurchaseOrdersCompleted(Object state) What is the problem does anyone know? I load and call my web service like.. BasicHttpBinding binding = new BasicHttpBinding(); EndpointAddress address = new EndpointAddress(new Uri("http://localhost/POSystem/POSvc.svc")); POSvc.POSvcClient mySvc = new POSvc.POSvcClient(binding, address); mySvc.InsertPOCompleted += new EventHandler<SalesSimplicityPO_SL.POSvc.InsertPOCompletedEventArgs>(mySvc_InsertPOCompleted); mySvc.InsertPOAsync(InitialsTextBox.Text.ToString(), DescTextBox.Text.ToString(), ClientTextBox.Text.ToString()); Works great in debug.... What am i Doing to get this error?

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  • How to get parent item in Treeview

    - by Anu
    Hi,To get the child items as string i used the following code private void treeview1_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e) { if (treeview1.SelectedItem != null) { Animal bar = (Animal)treeview1.SelectedItem; string str = bar.Name; int boxty = bar.BoxType; int boxno = bar.BoxNo; } } It works fine .But when i click on parent(instead of + sign),it goes to this code and shows error.Ofcourse im casting SelectedItem to my List-Animal. But i dont want this.I have to check,whether the clciked item is parent,if it is so then i will skip this coding.Only when i click the child items it will go to this coding. How can i do that?How can i identify the selected item is parent.

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  • Do a database query on Textbox onblur event

    - by user279521
    I am using asp.net 3.5 with C#. I need to do a database lookup when a user enters ProductID in txtProductID. I guess doing javascript is out of the question since this will have to be server side call. I wrote this code in the page_load event of the webpage: protected void Page_Load(object sender, EventArgs e) { txtProductID.Attributes.Add("onblur", "LookupProduct()"); } protected void LookupUser() { //Lookup Product information on onBlur event; } I get an error message: Microsoft JScript runtime error: Object expected How can I resolve this ?

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