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  • How to properly deal with KVO notifications when an managed object turns into a fault?

    - by dontWatchMyProfile
    From the docs: When Core Data turns an object into a fault, key-value observing (KVO) change notifications (see Key-Value Observing Programming Guide) are sent for the object’s properties. If you are observing properties of an object that is turned into a fault and the fault is subsequently realized, you receive change notifications for properties whose values have not in fact changed. So if an object turns into a fault, Core Data does send KVO notifications for changed properties? So I must always check for isFault == NO before beeing happy about the notification?

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  • To PHP Namespace or not to PHP Namespace

    - by David
    ok, im relatively new to php programming and have been plodding along quite unaware that it is possible to actually use namespaces in php as I can in c# etc. Its really ugly though as they have decided to use backslashes - why! Anyway, I am interested in other php programmers views on whether namespaces will catch on in php and whether I should begin to use them now?

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  • scala for yield setting a value

    - by coubeatczech
    Hi, I want to create a list of GridBagPanel.Constraints. I read it in the scala programming book, that there is a cool for-yield construction, but I probably haven't understood the way it works correctly, because my code doesn't compile. Here it is: val d = for { i <- 0 until 4 j <- 0 until 4 } yield { c = new Constraints c.gridx = j c.gridy = i } I want to generate a List[Constraints] and for every constraint set different x,y values so later, when I later add the components, they're going to be in a grid.

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  • Defining the context of a word - Python

    - by RadiantHex
    Hi folks, I think this is an interesting question, at least for me. I have a list of words, let's say: photo, free, search, image, css3, css, tutorials, webdesign, tutorial, google, china, censorship, politics, internet and I have a list of contexts: Programming World news Technology Web Design I need to try and match words with the appropriate context/contexts if possible. Maybe discovering word relationships in some way. Any ideas? Help would be much appreciated!

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  • How to build Lucene / Solr from source code in windows environment in order to add patches

    - by Simon
    I have successfully implemented Apache’s Solr for free text searching a database driven web site build for windows platforms using Visual Studio in c#. I am trying to get a version Solr working with field collapsing (which is not in the release version). There are patches available from apache and discussions on the web of people successfully doing this for the version I am using but my problem is cannot get the build to work. I am a c# coder on windows platforms so java development is new to me. I understand I need to get the correct source code (and revision) from SVN, add the appropriate patches, then build the war file to deploy to my system. I cannot seem to get the source to build and produce the deployment code including jar (and subsequent war) files. My system is: Windows 7 Ultimate for development Visual Studio 2010 for c# / javascript development MyEclipse 8.6 / Eclipse 3.5 for the java build from source Subecplise 1.6x SVN plugin to get the source from apache’s SVN Apache Solr 1.4.1 So far I have: Found the right patches for the function I need: https://issues.apache.org/jira/browse/SOLR-236 Specifically I need to patch: field_collapsing_1.1.0.patch HTTPS //issues.apache.org/jira/secure/attachment/12357681/field_collapsing_1.1.0.patch and SOLR-236-1_4_1.patch HTTPS //issues.apache.org/jira/secure/attachment/12448216/SOLR-236-1_4_1.patch I downloaded the Lucene trunk version from the day before the patch was released (revision 958303 from 28/6/10) via subeclipse into a java package in myeclipse from: HTTPS //svn.apache.org/repos/asf/lucene/dev/trunk (Solr is the web implementation of Lucene and is in the subfolder solr/) I can apply patches to the solr directory once it has downloaded but the parent Lucene project doesn’t build the war files, copy the jar or other files into the bin folder (it stays empty). The build process starts, but doesn’t do anything apart from creating the folders bin and src. I am building the whole Lucene project, which contains Solr. I have tried building the source without patching and the same happens. If I copy out the Solr directory into a new project, it runs the build and copies all the related files, tests, etc but fails with 4,500 errors and does not produce the jar files or war file, which I assume is because it can’t find the Lucene trunk files which it depends on. I have two interrelated problems 1) I can't get the Lucene downloaded trunk to build 2) The jar, war and associated files are not created Can anyone help with what I am missing to build the war file? I have spent 2 days to get this far as the help online is extremely patchy and I can’t find a walk though tutorial on building a java war file from source in a windows environment. Any help will be much appreciated. Simon

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  • What does the operator "<<" mean in C#?

    - by Kurru
    I was doing some basic audio programming in C# using the NAudio package and I came across the following expression and I have no idea what it means, as i've never seen the << operator being used before. So what does << mean? Please give a quick explaination of this expression. short sample = (short)((buffer[index + 1] << 8) | buffer[index + 0]);

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  • how to get out information from datagridview ???

    - by ghost_j1
    hi everyone I am working on program that calculate the GBA for university student in visual c# So i make an datagridview that contain columns for each subject and its mark as later and number but after the user "student" insert his subject i want to let him to press button that get the mark and the number of the cirdit hours of each subject and calculate the GBA for the student and put the result in textbox... does anyone can help me to do it ???

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  • Good Administration Center Templates

    - by Alec Smart
    Hello, This may not be a programming question per se. But I am wondering what template do you use for your sites/webapps admin centers. Am looking primarily at free templates that give a basic structure. I know I can build my own, but I haven't had too much success in something that works for all my webapps/sites. Wondering if there is something nice and comprehensive available. Thank you for your time.

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  • running a parallel port controlling program through php.

    - by prateek
    I have a program that is interacting with hardware via parallel port programming. i had compiled it and using its object file to interact with the hardware (a simple led). when i execute it directly on the shell it serves the purpose of glowing the LED but when i execute it using shell_exec() in php the command is executed but unable to interact with the hardware. i am totally confused.. .

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  • DLL Deployment Strategies

    - by Filip Ekberg
    If you have a modular applicaiton that depends on its modules to be in seperate libraries ( dlls ). What kind of Re-deployment strategy would be good to follow? The application is installed using the Setup Project that is available in Visual Studio. I would like to avoid the copy and paste approach!

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  • What is Covariance and Contravariance

    - by xyz
    Please explain me in simple terms (if possible simple example) the covariance and contravariance in c# .net . I know many are available(even in stackoverflow) but my problem is in which scenario I should use that is not explained in the articles that I am refering to. e.g. Covariance and Contravariance in Delegates (C# Programming Guide) Thanks

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  • What are the equivalent of the following .NET concepts (ASP.NET, IIS, Linq, etc.) in Java world?

    - by Richard77
    Hello, I'm the only one among my people who navigate in .NET water, the rest is in the Java world. So, I'd like to have some common points to talk with them. What are the equivalent concepts in Java for: (by concept, I mean the purpose of such technology) Visual Studio IIS Linq Development server that ships with VS (I don't know the name) NHibernate, Subsonic, ... ASP.NET WebForm (Is there any equivalent in Java with drag and drop) ASP.NET MVC etc.(Please, add some other concepts if they are important to know) Thanks for helping

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  • Best approach for coding ?

    - by ahmed
    What should or how should I decide the best approach for coding as a smart programmer. I have just started programming last year in VB, and I keep on listening this statement. But I never could find by myself to choose the best approach for coding. When I search for a coding example on internet I find different types of approach to achieve the same target. So help me finding the best approach. (asp.net,vb.net)

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  • Scalable Ticketing / Festival Website

    - by Luke Lowrey
    I've noticed major music festivals (at least in Australia) and other events that experience a peak in traffic when tickets go on sale have huge problems keeping their websites running well. I've seen a few different techniques used to try combat this such as short sessions and virtual queues but they dont seem to have much effect. If you were to design a website to sell a lot of tickets in a short amount of time how would you handle scalability? What technologies and programming techniques would you use?

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  • What eletronic scrum/kanban board do you use and recommend for distributed teams?

    - by Derick Bailey
    I have a coworker on a team that is fairly distributed, fairly large (for our company) and wants to take advantage of visual management tools like scrum / kanban boards. Since they are a somewhat distributed team, though, all of the issue management / work management must be done via an electronic tool (we currently use Trac). What issue / work management tools, with a visualization of a scrum / kanban board, do you use for your distributed scrum / kanban teams? would you recommend it, and if so, why? Thanks.

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  • A feature rich JavaScript IDE environment?

    - by jdk
    I'm currently using Visual Studio 2008 to edit .js files with, and it has decent support but I want more... I like the VS syntax highlighting and auto-indentation features but additionally would like advanced features like: contextual info and help, collapsible JavaScript blocks, implicit symbol understanding for searching, refactoring and that kind of thing; also warnings and errors for the js code. Suggestions?

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  • How to create a setup for a web application with Web Platform Installer

    - by Nasser Hajloo
    I have a large Web Application ( ErPwith 11 subsystem) and I want tocreate a setup for itwith Microsoft WebPI. Currently We send our application for customers once a week (for weekly updates). We usefollowing tools in this application, So How to create a setup for out project toconfigure it in client IIS automatically List item .netFramework 3.5 SQL server 2008 Asp.net C# NHibernate Log4net castleProxy SQL Server Reporting Services (RDL) Visual Studio Client Reports (RDLC) Javascript JQuery

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  • Which .NET libraries do you use most ?

    - by Quandary
    Which .NET programming libaries do you use most ? I'm putting together a list, kind of "best of" SourceForge, CodePlex, Google Code, GitHub, etc. SourceForge.NET Nhibernate (database ORM) SharpZipLib (ZIP compression) itextsharp (PDF library) GitHub: JQuery (JavaScript) Google Code: aforge (imaging) Codeplex: Excel Data-Reader Other: bouncycastle.org (Encryption)

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  • How do I remove msysgit's right click menu options?

    - by DevelopingChris
    This isn't the best programming question but lets face it, the server fault guys aren't well versed in git, so I think its more towards this audience. Do I have to write a script to uninstall them? How do I get them to go away, I want to switch to tortoise git, or portablegit in my shell, but I'm left with these annoying menu options.

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  • Error:No SharePoint Site exists at the specified URL while deployong the webpart.

    - by Lalit
    Hi, I have build my custom webpart using the visual studio extensions. I want to deploy it. but getting error: No SharePoint Site exists at the specified URL for the solution I have tried to change the "Start browser with URL" from properties of the project in Debug tab. I gave my site name with port as, http://myserver:500/ but still problem there, when a i say build or deploy. Please guide me.

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  • Entity Framework 4.0: Why Would One Use the Code Generated EntityObjects Over POCO Objects?

    - by senfo
    Aside from faster development time (Visual Studio 2010 beta 2 has no T4 templates for building POCO entity objects that I'm aware of), are there any advantages to using the traditional EntityObject entities that Entity Framework creates, by default? If Microsoft delivers a T4 template for building POCO objects, I'm trying to figure out why anybody would want to use the traditional method.

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