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Articles indexed Tuesday May 4 2010

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  • Get file name before the extension

    - by ryanprayogo
    I have some files in the same directory (in UNIX filesystem) that looks like: a.txt.name b.xml.name c.properties.name a.txt.name2 b.xml.name2 c.properties.name2 How do I get the string before the name or name2 part using some shell command? ie. the a.txt, b.xml, c.properties part?

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  • First, we kill all the patent lawyers

    <b>Computerworld:</b> "Actually, I don't think we should kill all the patent lawyers. Some of my best friends are patent attorneys -- no, really. But I'd happily stick a knife into the American patent system."

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  • First look at Ubuntu 10.04

    <b>Distrowatch:</b> "Quite a few of changes have been poured into 10.04, code named "Lucid Lynx", and I was curious to see what the Ubuntu team had put together. Before trying the new release, I had a chance to pick the brain of Gerry Carr, Head of Platform Marketing at Canonical."

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  • The Appalling Reaction to the Apple iPhone Leak

    <b>ABC News:</b> "The contempt that Apple (and Steve Jobs in particular) holds toward the media -- and its willingness to manipulate the press for its own ends -- should have produced a media backlash. There should be inside-Apple scoops in the press every week as intrepid reporters go over, under and around every arbitrary barrier Apple puts in front of them."

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  • Kubuntu Linux 10.04 LTS Review

    <b>Desktop Linux Reviews:</b> "Alas, I was not nearly as pleased with Kubuntu as I was with Ubuntu. While there have definitely been some improvements in Kubuntu 10.04, it lacks some of the important things that defined Ubuntu 10.04."

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  • Is an open license enough?

    <b>Ernie Leseberg blog:</b> "Does having an open license for a software project, have all the advantages negated if the development process is basically closed to the outside world?"

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  • Shared Folders in VirtualBox on Windows 7

    In my adventures with VirtualBox, my latest victory was in figuring out how to share folders between my host OS (Windows 7) and my virtual OS (Windows Server 2008).  Im familiar with VirtualPC and other such products, which allow you to share local folders with the VM.  When you do, they just show up in Windows Explorer and all is good.  However, after configuring shared folders in VirtualBox like so:   I couldnt see them anywhere within the machine. Where are Shared Folders in a VirtualBox VM? Fortunately a bit of searching yielded this article, which describes the problem nicely.  It turns out that there is a magic word you have to know, and that is the share name for the host OS: \\vboxsrv Once you know this, mapping shared folders is straightforward.  From Windows Explorer, click on the Map network drive option, and then map a drive to \\vboxsrv\YOURSHAREDFOLDER Like so: With that, its easy to share folders between the client and host OS using VirtualBox.  The reason I didnt simply use a standard network share to my host OS machine name is that both guest and host are in a VPN, and the VPN is over the Internet and in a different country, so when I went that route my files were (apparently) traveling from host to guest by way of the remote VPN network, rather than locally.  Using the Shared Folders feature dramatically sped up my ability to transfer files between Host and Guest machines. Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • php crashes when I try to add extensions

    - by Christy
    Hi all, I am trying to install phpmyadmin on my web server with Windows 2008 and iis 7. PHP is running fine and I have several sites that rely on it. When installing phpmyadmin - it has errors at the bottom that crypt and mbstring are not properly installed. When I try to add the php_mcrypt.dll and/or the php_mbstring.dll to the php.ini file (I verified the location and the right file through phpinfo) it crashes. I get a 500 error on all the websites, and I get an error on the server saying FastCGI has failed. Does anyone know how to fix this or why it is happening? Shouldn't I be able to add extenstions? I have the dll files in the extension folder, which is referenced in the php.ini and other extensions (installed previously) are working as expected. Other info: php version 5.2.8, pdo driver for mysql version 5.0.51a Thanks in advance!

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  • Core Data performance deleteObject and save managed object context

    - by Gary
    I am trying to figure out the best way to bulk delete objects inside of my Core Data database. I have some objects with a parent/child relationship. At times I need to "refresh" the parent object by clearing out all of the existing children objects and adding new ones to Core Data. The 'delete all' portion of this operation is where I am running into trouble. I accomplish this by looping through the children and calling deleteObject for each one. I have noticed that after the NSManagedObjectContext:Save call following all of the deleteObject calls is very slow when I am deleting 15,000 objects. How can I speed up this call? Are there things happening during the save operation that I can be aware of and avoid by setting parameters different or setting up my model another way? I've noticed that memory spikes during this operation as well. I really just want to "delete * from". Thanks.

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  • Java IDE - find all INDIRECT usages/references of a function or class?

    - by GreenieMeanie
    In Netbeans or in Eclipse, you can use "Find Usages" or "References" from the right click context menu. If a() calls b(), using the functionality from b() will show you a(). However, what I want is to be able to see some kind of tree or have an option to see all usages of a given/class or method, such that if z() calls a() that using the functionality will show both z() and a(). Any IDE plugins or external tools that can do this?

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  • Fluent NHibernate Self Referencing Many To Many

    - by Jeremy
    I have an entity called Books that can have a list of more books called RelatedBooks. The abbreviated Book entity looks something likes this: public class Book { public virtual long Id { get; private set; } public virtual IList<Book> RelatedBooks { get; set; } } Here is what the mapping looks like for this relationship HasManyToMany(x => x.RelatedBooks) .ParentKeyColumn("BookId") .ChildKeyColumn("RelatedBookId") .Table("RelatedBooks") .Cascade.SaveUpdate(); Here is a sample of the data that is then generated in the RelatedBooks table: BookId RelatedBookId 1 2 1 3 The problem happens when I Try to delete a book. If I delete the book that has an ID of 1, everything works ok and the RelatedBooks table has the two corresponding records removed. However if I try to delete the book with an ID of 3, I get the error "The DELETE statement conflicted with the REFERENCE constraint "FK5B54405174BAB605". The conflict occurred in database "Test", table "dbo.RelatedBooks", column 'RelatedBookId'". Basically what is happening is the Book cannot be deleted because the record in the RelatedBooks table that has a RelatedBookId of 3 is never deleted. How do I get that record to be deleted when I delete a book? EDIT After changing the Cascade from SaveUpdate() to All(), the same problem still exists if I try to delete the Book with an ID of 3. Also with Cascade set to All(), if delete the Book with and ID of 1, then all 3 books (ID's: 1, 2 and 3) are deleted so that won't work either. Looking at the SQL that is executed when the Book.Delete() method is called when I delete the Book with an ID of 3, it looks like the SELECT statement is looking at the wrong column (which I assume means that the SQL DELETE statment would make the same mistake, therefore never removing that record). Here is the SQL for the RelatedBook SELECT relatedboo0_.BookId as BookId3_ , relatedboo0_.RelatedBookId as RelatedB2_3_ , book1_.Id as Id14_0_ FROM RelatedBooks relatedboo0_ left outer join [Book] book1_ on relatedboo0_.RelatedBookId=book1_.Id WHERE relatedboo0_.BookId=3 The WHERE statment should look something like this for thie particular case: WHERE relatedboo0_.RelatedBookId = 3 SOLUTION Here is what I had to do to get it working for all cases Mapping: HasManyToMany(x => x.RelatedBooks) .ParentKeyColumn("BookId") .ChildKeyColumn("RelatedBookId") .Table("RelatedBooks"); Code: var book = currentSession.Get<Book>(bookId); if (book != null) { //Remove all of the Related Books book.RelatedBooks.Clear(); //Get all other books that have this book as a related book var booksWithRelated = currentSession.CreateCriteria<Book>() .CreateAlias("RelatedBooks", "br") .Add(Restrictions.Eq("br.Id", book.Id)) .List<Book>(); //Remove this book as a Related Book for all other Books foreach (var tempBook in booksWithRelated) { tempBook.RelatedBooks.Remove(book); tempBook.Save(); } //Delete the book book.Delete(); }

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