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• How do I force Eclipse to rebuild if files in another project change (any change)?

  - by James Moore

  I've got an Eclipse (Galileo) project (called ProguardBuilder) that runs Proguard over a set of class files in other projects and produces a jar file. I'd like to have the ProguardBuilder project get rebuilt any time any class file in the other projects changes. AutoBuild doesn't do that; presumably it's smart enough to recognize and ignore any changes that don't affect anything externally visible. My problem is that I don't care whether or not the change is visible, since I need to completely rebuild ProguardBuilder any time the class files it depends on change at all. How do I tell Eclipse to do this sort of rebuild?

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• Changing a Container while using Visitor

  - by Florian

  Hi everyone, I implemented the Visitor pattern in C++ using a STL-like iterator for storing the Visitor's current position in the container. Now I would like to change the container while I iterate over it, and I'm especially interested in deleting items from the container, even the one I'm currently visiting. Now obviously this will invalidate the Visitors internal iterator, because it was pointing to exactly this item. Currently, I store a list of all iterators in the container and update them, as soon as anything is added to or removed from the list. So in a way this is similar to the Observer pattern applied to the iterator (as Observer) and the list (as Observable). Alternatively I considered having the visitor() methods return some hint to the Visitor about what happend to the current item and how to proceed iterating, but that doesn't sound like such a good idea either, because the visit() implementation shouldn't really care about finding the next item. So, my question is: What's the best way to keep a visitor working, even when items are added to the container or removed from it. Regards, Florian

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• BigDecimal serialization in GWT

  - by Domchi

  What is your preferred approach to serializing BigDecimal in GWT? Are there any clever workarounds, or do you simply use Double or String? Of all of the GWT pains this is so far the biggest; I'd hate to create two models, one for server and one for GWT, and transform data from one to the other. On the other hand, while I don't care much about using String instead of, say, javax.xml.datatype.Duration, I have to use BigDecimal on the server because of the calculations, which means either two models and conversion, or tons of tiny conversions to BigDecimal for every calculation.

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• Is there any JavaScript Library to intelligently truncate strings?

  - by j0ker

  I need to truncate strings in a side menu to make the fit into a div without a linebreak. The divs have a fixed width. I'm looking for a library to do that for me. If a string is too long to fit into the div, it should be truncated like: <div>This string is too long</div> == <div>This string is...ong</div> As you can see, the string is not only truncated by an ellipsis but the last three letters are also visible. This is meant to increase readability. The truncation should not care about spaces. Does anyone know of a library that includes such functionality? We're mainly using jQuery throughout the project. Thanks in advance!

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• Why can event handlers can only be bound to HttpApplication events during IHttpModule initialization

  - by Venemo

  This is just another "working in dev server, why not working in IIS" type question. So, I created a nice DAL using NHibernate as described here. When creating an ISession, I hook up an event handler to the HttpApplication.EndRequest to take care of cleaning it up. However, I deployed my site to IIS and it says: Event handlers can only be bound to HttpApplication events during IHttpModule initialization. Since when? What for? Why? How can I bypass it?

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• How would you go about tackling this problem?

  - by incrediman

  I have a programming contest coming up in about half a week, and I've been prepping :) I found a bunch of questions from this canadian competition, they're great practice: http://cemc.math.uwaterloo.ca/contests/computing/2009/stage2/day1.pdf I'm looking at problem B ("Dinner"). Any idea where to start? I can't really think of anything besides the naive approach (ie. trying all permutations) which would take too long to be a valid answer. Btw, the language there says c++ and pascal I think, but i don't care what language you use - I mean really all I want is a brief description of how to tackle the problem. Like "use X technique treating each programmer as a Y" or something :)

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• Is there a way to read what NSLog is writing from within the app?

  - by Jared P

  I have already tried stderr = stdout = fopen("/Users/Jared/Desktop/Untitled.txt", "w"); just as a test (obvi not production code) and this works fine for printf and some errors, but fails to redirect NSLog. I would like to be able to read what is being sent to NSLog as a string, and preferably prevent it from actually going into the system logs, although I don't particularly care if it has to. I need it to redirect logging from both my own code and apple's frameworks, which is why I can't just write a function that would append logs to a string. Thanks

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• vlc python bindings - how to receive keyboard input?

  - by itsadok

  I'm trying to use VLC's python bindings to create my own little video player. The demo implementation is quite simple and nice, but it requires all the keyboard commands to be typed into the console from which the script was run. Is there any way I can handle keyboard input also when the video player itself has focus? Specifically, I care about controlling the video while in fullscreen mode. Perhaps there's a way to keep the keyboard focus in the console (or maybe another window) while showing the video? I'm using Windows XP, if that has any relevance.

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• How to inform users that webapplication does not support IE6

  - by Paul Szulc

  I have web application and I do not really care about IE6 users. However I would like to have some kind of feautre that would informe users that they are using IE6 and that their browser is not supported. I was thinking about two possible solutions: pop-out window (probably Javascript) with text informing the user on every page he enters some special page with information, that user would be redirected to whenever he tries to access my application Both solutions will be sufficient, however I would prefer the second one. Probably some magic javascript needs to be involved, can anyone could please provide a solution to this?

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• RockBand-like voice app for PC/OSX / Real time pitch display software

  - by Sai Emrys

  I played Rock Band 2 for the first time a little while ago (at Notacon). One thing I enjoyed about it was getting real-time feedback about my singing. I think it'd be neat to have something like that to run alongside my usual music, so that I can sing to random stuff in my music collection and know when I'm hitting the notes. Is there something like this for PC - ideally for OSX, and ideally that can just operate on arbitrary songs? I don't really care if it's game-like (though that's neat too); I just want it for the singing feedback. And I have no need for pitch correction - ideally what I'd see is just the pitches of the notes in the music and (on the same scale, differently displayed) of the live microphone. I tried to STFW but got no salient hits. :-/ Thanks!

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• Proper reconstitution of Aggregate objects in the Repository?

  - by Jebb

  Assuming that no ORM (e.g. Doctrine) is used inside the Repository, my question is what is the proper way of instantiating the Aggregate objects? Is it instantiating the child objects directly inside the Repository and just assign it to the Aggregate Root through its setters or the Aggregate Root is responsible of constructing its child entities/objects? Example 1: class UserRepository { // Create user domain entity. $user = new User(); $user->setName('Juan'); // Create child object orders entity. $orders = new Orders($orders); $user->setOrders($orders); } Example 2: class UserRepository { // Create user domain entity. $user = new User(); $user->setName('Juan'); // Get orders. $orders = $ordersDao->findByUser(1); $user->setOrders($orders); } whereas in example 2, instantiation of orders are taken care inside the user entity.

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• How to implement a bidirectional "mailbox service" over tcp?

  - by igorgatis

  The idea is to allow to peer processes to exchange messages (packets) over tcp as much asynchronously as possible. The way I'd like it to work is each process to have an outbox and an inbox. The send operation is just a push on the outbox. The receive operation is just a pop on the inbox. Underlying protocol would take care of the communication details. Is there a way to implement such mechanism using a single TCP connection? How would that be implemented using BSD sockets and modern OO Socket APIs (like Java or C# socket API)?

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• Is it good or bad practice to use var everywhere? [closed]

  - by Earlz

  Possible Duplicate: Use of var keyword in C# Hello, I've recently been discovering the awesomeness that is the var keyword in C#. Well, I didn't think about it before but I just wrote lines of code that are along the lines of var con=CreateNewConnection(); Where this would usually be IdbConnection con=CreateNewConnection(); Is this a good use of var? Is it possible to use var too often? Are there any downsides to using it? Also, one more point of consideration: We are not worried about backwards compatability. We just care that it runs on .NET 3.5

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• How "healthy" is the haskell community

  - by Asher

  I came across a post where someone wrote something inaccurate about haskell (won't go into it) and he got flammed for it. Which (pleasantly) surprised me. About 3 years ago I read this joke about haskell: All the haskell programmers in the world can fit into a 747 and if that plane were to crash no one would care... or something along those lines. Which brings me to my question: is haskell "mainstream"? Is it mainly used by hobbiest and academics or someone making some serious money from it (which is the true yardstick of how good a language is - just kidding, geez!)?

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• Help with ActiveX Install? Merge Modules - Windows Vista and Windows 7

  - by Watts

  I'm building an ActiveX control installer in VS2008 which uses both the CRT and MFC merge modules to install. When my control tries to register on Windows 7 it fails. Dependency Walker says I'm missing the mfc90u.dll, msvcr90.dll and msvcp90.dll dependencies when trying to register my control and the install fails. Are the merge modules supposed to take care of this? My output OCX is being registered with the vsdrpCOMSelfReg option. From what I am reading on other forums, this might not be the best method, what should I try at this point? Install works fine on Windows XP.

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• IE7 is not positioning dialog properly on window resize

  - by Ergec

  Like I said, IE7 (and IE6 but I don't really care IE6 that much) doesn't position dialog properly on window resize. When window is re sized, dialog goes down and down. IE8 FF Chrome Safari all work properly and position and re size dialog just fine but IE7 it re sizes the dialog but positions incorrectly. Anybody know some fix about this? $("#mydialog").dialog({ autoOpen: false, bgiframe: true, resizable: false, modal: true, title: "", height: 400, overlay: { backgroundColor: '#000', opacity: 0.5 } }); $(window).resize(function(){ $('#mydialog').dialog("option", "height", $(window).height() - 40); $('#mydialog').dialog('option', 'position', 'center'); }); $("#mydialog").dialog("open");

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• Verify method with Delegate parameter in Moq

  - by Hans Løken

  I have a case where I want to verify that a method that takes a Delegate parameter is called. I don't care about the particular Delegate parameter supplied I just want to make sure that the method is in fact called. The method looks like this: public interface IInvokerProxy{ void Invoke(Delegate method); ... } I would like to do something like this: invokerProxyMock.Verify( proxy => proxy.Invoke( It.IsAny<Delegate>)); Currently it gives me an error Argument '1': cannot convert from 'method group' to 'System.Delegate'. Does anyone know if this is possible?

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• Disabling scoring in Lucene(.NET)

  - by user72185

  Hi, When searching, is there a way to disable scoring for any query? The scenario is that the user refines his query by trying different combinations of words, phrases etc., and needs realtime (well, reasonably fast at least) responses on the number of hits. Search time slows down a lot when there are millions of hits due to scoring, but the user really doesn't care about all these documents. As soon as he sees there are 1M+ hits he will start adding additional words to the query. A "Sort by relevance" option would allow him to do this quickly, while turning scoring back on when the number of hits is reasonable. Is this possible? I'm using Lucene.NET 2.9.2 but AFAIK it is identical to the Java version.

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• Industry Reports on Source Control Tools

  - by Kent Boogaart

  Hi, I'm looking for independent industry reports that compare and contrast the various source control tools out there. In particular, I care about Clearcase vs Sourcesafe vs SVN, but if the report includes other SCM systems that's fine. I need this for a client who wants to get a feel on exactly what they stand to gain switching to SVN (yes, from Clearcase and VSS). In other words, something I can use to sell it to their business. I'm hoping some case studies have been done on developer productivity with these tools and resultant reports made freely available. Thanks, Kent

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• What is the underlying reason for not being able to put arrays of pointers in unsafe structs in C#?

  - by cons

  If one could put an array of pointers to child structs inside unsafe structs in C# like one could in C, constructing complex data structures without the overhead of having one object per node would be a lot easier and less of a time sink, as well as syntactically cleaner and much more readable. Is there a deep architectural reason why fixed arrays inside unsafe structs are only allowed to be composed of "value types" and not pointers? I assume only having explicitly named pointers inside structs must be a deliberate decision to weaken the language, but I can't find any documentation about why this is so, or the reasoning for not allowing pointer arrays inside structs, since I would assume the garbage collector shouldn't care what is going on in structs marked as unsafe. Digital Mars' D handles structs and pointers elegantly in comparison, and I'm missing not being able to rapidly develop succinct data structures; by making references abstract in C# a lot of power seems to have been removed from the language, even though pointers are still there at least in a marketing sense. Maybe I'm wrong to expect languages to become more powerful at representing complex data structures efficiently over time.

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• Creating a process in a non-zero session from a service in windows-2008-server?

  - by Itay Levin

  Hi, I was wondering if there is a simple way for a service to create a process in user session? My service is running as a user(administrator) account and not as a LocalSystem acount, therefore i can't use the WTSQueryUserToken function. i have tried calling OpenProcessToken(GetCurrentProcess,TOKEN_ALL_ACCESS,TokenHandle); but when i use this token to run CreateProcessAsUser(TokenHandle,.....) my process is still running in session 0. how can i resolve this issue? I'm using an Ole automation so i don't really care on which session the process will be running on, as long it is not the session 0 - because the Ole from some reason doesn't create its processes (winword.exe for instance) in session 0, but rather it creates them in other user sessions. Any suggestions will be welcome. Thanks in advance.

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• Dynamically creating controls in MFC (Collection question)

  - by ProgramWriter

  Hello all, I have some custom control inside of which i should create radiobuttons or checkboxes. The count of child controls is available only at runtime (it loads some file from which it gets this count). So i need to create variable number of controls. Which collection i should use for this purpose? Solution 1: simply use std::vector (or CArray) - not suitable because i want use MFC (CButton). Of course i can Attach() and later Detach() handle to window each time i need this window, but it will give big overhead. Solution 2: use std::vector or CArray or CList or... In this case i take care about making 'new' and appropriate 'delete' when control is unneeded. I am forgetful :) MFC handle map contains pointer to CButton and i can't use simple CArray, because it will move my objects each time when his size will grow. ... and the question is: Which collection i should use for containing variable count of MFC control classes?

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• Global Ignores for SVN?

  - by Michael Stum

  Is there a way to setup a global list of Ignores for a SVN Repository or for the SVN Client on the PC? The only reason I'm using tools like Tortoise/Ankh/VisualSVN is because I want to only check in the files I need without all the bin/obj/Resharper stuff. I'm spoiled by .gitignore and .hgignore which I just copy to a repository and then use "git commit -a" without having to care about checking in junk. I know I can manually set it, but that's tedious to do and I think it had to be applied to every new folder that gets created as well. Using SVN under Windows if that matters

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• NullReferenceException when initializing NServiceBus within web application Application_Start method

  - by SteveBering

  I am running the 2.0 RTM of NServiceBus and am getting a NullReferenceException when my MessageModule binds the CurrentSessionContext to my NHibernate sessionfactory. From within my Application_Start, I call the following method: public static void WithWeb(IUnityContainer container) { log4net.Config.XmlConfigurator.Configure(); var childContainer = container.CreateChildContainer(); childContainer.RegisterInstance<ISessionFactory>(NHibernateSession.SessionFactory); var bus = NServiceBus.Configure.WithWeb() .UnityBuilder(childContainer) .Log4Net() .XmlSerializer() .MsmqTransport() .IsTransactional(true) .PurgeOnStartup(false) .UnicastBus() .ImpersonateSender(false) .LoadMessageHandlers() .CreateBus(); var activeBus = bus.Start(); container.RegisterInstance(typeof(IBus), activeBus); } When the bus is started, my message module starts with the following: public void HandleBeginMessage() { try { CurrentSessionContext.Bind(_sessionFactory.OpenSession()); } catch (Exception e) { _log.Error("Error occurred in HandleBeginMessage of NHibernateMessageModule", e); throw; } } In looking at my log, we are logging the following error when the bind method is called: System.NullReferenceException: Object reference not set to an instance of an object. at NHibernate.Context.WebSessionContext.GetMap() at NHibernate.Context.MapBasedSessionContext.set_Session(ISession value) at NHibernate.Context.CurrentSessionContext.Bind(ISession session) Apparently, there is some issue in getting access to the HttpContext. Should this call to configure NServiceBus occur later in the lifecycle than Application_Start? Or is there another workaround that others have used to get handlers working within an Asp.NET Web application? Thanks, Steve

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• How to implement a Counter Cache in Rails?

  - by yuval

  I have a posts controller and a comments controller. Post has many comments, and comments belong to Post. The associate is set up with the counter_cache option turned on as such: #Inside post.rb has_many :comments #Inside comment.rb belongs_to :post, :counter_cache => true I have a comments_count column in my posts table that is defaulted to zero, as such: add_column :posts, :comments_count, :integer, :default => 0 In the create action of my comments controller, I have the following code: def create @posts = Post.find(params[:post_id]) @comment = @post.comments.build(params[:comment]) if @comment.save redirect_to root else render :action => 'new' end end My problem: when @comment.save is called, I get the following error: ArgumentError in CommentsController#create wrong number of arguments (2 for 0) Removing :counter_cache => true from comment.rb completely solves the problem, so I'm assuming that it is the cause of this vague error. What am I missing here? How can I save my comment and still have rails take care of my counter_cache for my post? Thanks!

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