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  • Is it safe to delete the "ipch" folder - Precompiled headers?

    - by Jamie Keeling
    Hello, I was looking through the folder for an application I am working on and noticed the "ipch" folder, for my solution which has two small projects it weighs in at about 90mb+ in size. I have found an article discussing the use for the files and was wondering if they were safe to delete? It's for an assignment hand in and I would like to keep the electronic hand in as small as possible. If I were to delete the folder will the application remain in a safe and stable state? I apologise if this is a simple question, I have only just started using Visual Studio 2010. Thanks! Pre-Compiled Headers

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  • Can I delete EFI System Partition without harming other data on drive?

    - by Andy
    I have three external HDD's in a USB enclosure. After a recent upgrade to Win7, during which these three drives were actually installed inside the PC tower, two of the three drives now have a 200MB EFI partition, and the two drives do not show up as usable drives under either Win7 or Snow Leopard. One of the drives is empty; the other one, however, has a bunch of stuff on it that I want to save if possible. My question is, how can I get back to this data? Can I simply delete the EFI partition, and all will be well? Or do I have to do something trickier? Or am I just hosed?

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  • How to retrieve row count of one-to-many relation while also including original entity?

    - by kaa
    Say I have two entities Foo and Bar where Foo has-many Bar's, class Foo { int ImportantNumber { get; set; } IEnumerable<Bar> Bars { get; set; } } class FooDTO { Foo Foo { get; set; } int BarCount { get; set; } } How can I efficiently sum up the number of Bars per Foo in a DTO using a single query, preferrably only with the Criteria interface. I have tried any number of ways to get the original entity out of a query with ´SetProjection´ but no luck. The current theory is to do something like SELECT Foo.*, BarCounts.counts FROM Foo LEFT JOIN ( SELECT fooId, COUNT(*) as counts FROM Bar GROUP BY fooId ) AS BarCounts ON Foo.id=BarCounts.fooId but with Criterias, and I just can't seem to figure out how.

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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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  • What is the relation between database books by Ullman et al.?

    - by macias
    A First Course in Database Systems by Jeffrey D. Ullman, Jennifer Widom (Amazon links) Database System Implementation by Hector Garcia-Molina, Jeffrey D. Ullman, Jennifer D. Widom Database Systems: The Complete Book by Hector Garcia-Molina, Jeffrey D. Ullman, Jennifer Widom As far as I know the second one is the second "part" of the first one. But what about the third one -- is it just first+second published in one volume? I would like to buy them, but I don't want to get redundant reading. Thank you in advance for clarification.

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  • Is it possible to interrupt or cancel the trash-delete process?

    - by pete
    I am connected to the company server, onsite not remote, which is Windows based. When, in the OS finder, I go to delete a file or directory that resides on the window-based server, the trash progress panel appears as usual. Not infrequently it will just hang there appearing to be active but no progress occurs on the progress bar. So the X is chosen to stop or cancel the process. A new panel appears, and while appearing to be active, again, just hangs there indefinitely. My lack of reputation prevents posting a screen shot - sorry. The question then is this: Is there a way via the Activity Monitor, Terminal, etc. to interrupt this deleting process in the Mac OS? Currently, I have to force shutdown and reboot to eradicate the ever-deleting panel. Finder relaunch does not solve and only eliminates the finder until I force reboot. Any assistance is appreciated. Thanks, Pete iMac, Mac OS X (10.6.8), i7-2.8ghz, 8gb ram

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  • How to run a service as a user who can't delete or update or create a file

    - by neeraj
    Mongodb is a web based console to try out Mongodb. I have created something similar to try out nodejs. In nodejs I am accepting user input and then I am performing eval on that command. Given the power of nodejs , someone from web console can create a file, delete files on the system or could execute 'rm -rf '. I was thinking will it be okay if I run node as a user called node. This user node will not have any privilege to write anything, create anything or update anything. The only access this user will have is read access. Will that work or that is too much of risk. What is a good strategy to handle such a situation?

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  • SQL query: Delete a entry which is not present in a join table?

    - by Mestika
    Hi, I’m going to delete all users which has no subscription but I seem to run into problems each time I try to detect the users. My schemas look like this: Users = {userid, name} Subscriptionoffering = {userid, subscriptionname} Now, what I’m going to do is to delete all users in the user table there has a count of zero in the subscriptionoffering table. Or said in other words: All users which userid is not present in the subscriptionoffering table. I’ve tried with different queries but with no result. I’ve tried to say where user.userid <> subscriptionoffering.userid, but that doesn’t seem to work. Do anyone know how to create the correct query? Thanks Mestika

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  • How do I delete or modify Default User's default printer?

    - by eleven81
    I have some computers that I set up a couple years ago by creating a user account, setting it up the way I wanted, and copying that user's directory over Default User's directory. Pretty simple stuff. One of the things that I did was to add a printer and set it as the default. Straightforward, or so I thought. Things have changed, and that printer has been removed and replaced with a different printer. I deleted the old printer's object and added the new one. Now every time a new user logs in, their profile gets copied from Default User, and they get the old printer as their default. This re-adds the old printer object to the system. Now every user can see the old printer's object again. I want to permanently delete Default User's default printer. How?

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  • How do I delete a child entity from a parent collection with Entity Framework 4?

    - by simonjreid
    I'm using Entity Framework 4 and have a one-to-many relationship between a parent and child entity. I'm trying to delete a child using the parent repository by removing it from the parent's children collection: public virtual void RemoveChild(Child child) { children.Remove(child); } When I try to save the changes I get the following error: A relationship from the 'ParentChild' AssociationSet is in the 'Deleted' state. Given multiplicity constraints, a corresponding 'Child' must also in the 'Deleted' state. Surely I don't have to delete the child entity explicitly using a child repository!

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  • SQL Query to delete oldest rows over a certain row count?

    - by Casey
    I have a table that contains log entries for a program I'm writing. I'm looking for ideas on an SQL query (I'm using SQL Server Express 2005) that will keep the newest X number of records, and delete the rest. I have a datetime column that is a timestamp for the log entry. I figure something like the following would work, but I'm not sure of the performance with the IN clause for larger numbers of records. Performance isn't critical, but I might as well do the best I can the first time. DELETE FROM MyTable WHERE PrimaryKey NOT IN (SELECT TOP 10,000 PrimaryKey FROM MyTable ORDER BY TimeStamp DESC)

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  • How to securely delete files stored on a SSD?

    - by Chris Neuroth
    From a (very long, but definitely worth to read) article on SSDs: When you delete a file in your OS, there is no reaction from either a hard drive or SSD. It isn’t until you overwrite the sector (on a hard drive) or page (on a SSD) that you actually lose the data. File recovery programs use this property to their advantage and that’s how they help you recover deleted files. The key distinction between HDDs and SSDs however is what happens when you overwrite a file. While a HDD can simply write the new data to the same sector, a SSD will allocate a new (or previously used) page for the overwritten data. The page that contains the now invalid data will simply be marked as invalid and at some point it’ll get erased. So, what would be the best way to securely erase files stored on a SSD? Overwriting with random data as we are used to from hard disks (e.g. using the "shred" utility) won't work unless you overwrite the WHOLE drive...

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  • How do I delete a file from depot, but leave local copy in tact?

    - by Gary
    I'm trying to learn Perforce and want to delete a file from the depot(easy to do with p4 delete, p4 submit), but that deletes it from the client machine dir structure as well. I want to keep my local file in my directory intact. The only way I can see to do this would be to move it out of the hierarchy that is under Perforce control before deleting. I was able to get my file back by syncing an earlier version. Maybe I set up my client workspace wrong? Or am I misunderstanding a fundamental concept of source control? The client workspace is /home/user and I did it this way so I could add any file under my home directory without getting an error about the file not being under client's root. FYI - Linux client and server running P4D/LINUX26X86/2009.1/222893 (2009/11/12) Any advice appreciated. Thanks.

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  • Coffeeshop limits Internet connection to 30 minutes -- how does it recognize me if I delete my cooki

    - by Andrew
    I was connected to the Internet in a coffeeshop earlier today, but I was only allowed 30 minutes of access. I tried deleting my cookies after my time was up (though admittedly I didn't delete my Flash cookies -- would that have solved the problem?), but the connection still recognized that I'd already used 30 minutes, so I couldn't connect again. How did the connection recognize me still? The wireless was unprotected (no code or password), it just had a portal you had to pass through upon the initial connection. I'm not terribly familiar with web development or computer networks, so just trying to get a better idea of what's happening (and possibly to know what to do next time I use up my minutes =)).

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  • How to use forfiles (or similar) to delete files older than n days, but always leaving most recent n

    - by Aidan Whitehall
    (Using Windows 2000 and 2003 Server) We use forfiles.exe to delete backup .zip files older than n days, and it works great (command is a bit like below) forfiles -p"C:\Backup" -m"*.zip" -c"cmd /c if @ISDIR==FALSE del \"@PATH\@FILE\"" -d-5 If a .zip file fails to be created, I'd like to ensure that we don't end up with 0 .zip files in the backup after 5 days. Therefore, the command needs to be: "delete anything older than 5 days, but ALWAYS keep the most recent 5 files, EVEN if they themselves are older than 5 days" We can use forfiles.exe or another solution (although anything that is a slick one-liner is ALWAYS preferable to a script file). Thanks!

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  • Symfony 1.4/ Doctrine; n-m relation data cannot be accessed in template (indexSuccess)

    - by chandimak
    I have a database with 3 tables. It's a simple n-m relationship. Student, Course and StudentHasCourse to handle n-m relationship. I post the schema.yml for reference, but it would not be really necessary. Course: connection: doctrine tableName: course columns: id: type: integer(4) fixed: false unsigned: false primary: true autoincrement: false name: type: string(45) fixed: false unsigned: false primary: false notnull: false autoincrement: false relations: StudentHasCourse: local: id foreign: course_id type: many Student: connection: doctrine tableName: student columns: id: type: integer(4) fixed: false unsigned: false primary: true autoincrement: false registration_details: type: string(45) fixed: false unsigned: false primary: false notnull: false autoincrement: false name: type: string(30) fixed: false unsigned: false primary: false notnull: false autoincrement: false relations: StudentHasCourse: local: id foreign: student_id type: many StudentHasCourse: connection: doctrine tableName: student_has_course columns: student_id: type: integer(4) fixed: false unsigned: false primary: true autoincrement: false course_id: type: integer(4) fixed: false unsigned: false primary: true autoincrement: false result: type: string(1) fixed: true unsigned: false primary: false notnull: false autoincrement: false relations: Course: local: course_id foreign: id type: one Student: local: student_id foreign: id type: one Then, I get data from tables in executeIndex() from the following query. $q_info = Doctrine_Query::create() ->select('s.*, shc.*, c.*') ->from('Student s') ->leftJoin('s.StudentHasCourse shc') ->leftJoin('shc.Course c') ->where('c.id = 1'); $this->infos = $q_info->execute(); Then I access data by looping through in indexSuccess.php. But, in indexSuccess I can only access data from the table Student. <?php foreach ($infos as $info): ?> <?php echo $info->getId(); ?> <?php echo $info->getName(); ?> <?php endforeach; ?> I expected, that I could access StudentHasCourse data and Course data like the following. But, it generates an error. <?php echo $info->getStudentHasCourse()->getResult()?> <?php echo $info->getStudentHasCourse()->getCourse()->getName()?> The first statement gives a warning; Warning: call_user_func_array() expects parameter 1 to be a valid callback, class 'Doctrine_Collection' does not have a method 'getCourse' in D:\wamp\bin\php\php5.3.5\PEAR\pear\symfony\escaper\sfOutputEscaperObjectDecorator.class.php on line 64 And the second statement gives the above warning and the following error; Fatal error: Call to a member function getName() on a non-object in D:\wamp\www\sam\test_doc_1\apps\frontend\modules\registration\templates\indexSuccess.php on line 5 When I check the query from the Debug toolbar it appears as following and it gives all data I want. SELECT s.id AS s__id, s.registration_details AS s__registration_details, s.name AS s__name, s2.student_id AS s2__student_id, s2.course_id AS s2__course_id, s2.result AS s2__result, c.id AS c__id, c.name AS c__name FROM student s LEFT JOIN student_has_course s2 ON s.id = s2.student_id LEFT JOIN course c ON s2.course_id = c.id WHERE (c.id = 1) Though the question is short, as all the information mentioned it became so long. It's highly appreciated if someone can help me out to solve this. What I require is to access the data from StudentHasCourse and Course. If those data cannot be accessed by this design and this query, any other methodology is also appreciated.

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  • What is the the relation between programming and mathematics?

    - by Math Grad
    Programmers seem to think that their work is quite mathematical. I understand this when you try to optimize something in performance, find the most efficient alogithm, etc.. But it patently seems false when you look at a billing application for a shop, or a systems software riddled with I/O calls. So what is it exactly? Is computation and associated programming really mathematical? Here I have in mind particularly the words of the philosopher Schopenhauer in mind: That arithmetic is the basest of all mental activities is proved by the fact that it is the only one that can be accomplished by means of a machine. Take, for instance, the reckoning machines that are so commonly used in England at the present time, and solely for the sake of convenience. But all analysis finitorum et infinitorum is fundamentally based on calculation. Therefore we may gauge the “profound sense of the mathematician,” of whom Lichtenberg has made fun, in that he says: “These so-called professors of mathematics have taken advantage of the ingenuousness of other people, have attained the credit of possessing profound sense, which strongly resembles the theologians’ profound sense of their own holiness.” I lifted the above quote from here. It seems that programmers are doing precisely the sort of mechanized base mental activity the grand old man is contemptuous about. So what exactly is the deal? Is programming really the "good" kind of mathematics, or just the baser type, or altogether something else just meant for business not to be confused with a pure discipline?

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  • Create, Delete and Use e-mail accounts within a website! Is it possible?

    - by BitDrink
    Hello! I'm developing an administration panel (in php), for a website (in a shared host), to let the administrator to manage the personal infos of the employees! With this panel should be possible to create or delete an e-mail account for an employee and if the employee logs in the admin panel, he/she should be able to access to his/her e-mail account! I had thought to install Horde WebMail on the website to let the employees use their e-mail accounts ... but how can I pass the login credentials to Horde? And what you suggest to create and delete the e-mails account that can be read by Horde? Any other suggestion is greatly appreciated! Thanks in advance!!! EDIT: Or are there better alternatives to Horde to accomplish, at least, the e-mail account access from within the web site?

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  • How to define an n-m relation in doctrine?

    - by murze
    If got a table "Article" and a table "Tags". Articles can have multiple tags and tags can hang to multiple articles. The class BaseArticle looks like this: abstract class BaseArticle extends Doctrine_Record { public function setTableDefinition() { $this->setTableName('article'); $this->hasColumn('article_id', 'integer', 8, array( 'type' => 'integer', 'length' => 8, 'fixed' => false, 'unsigned' => false, 'primary' => true, 'autoincrement' => true, )); $this->hasColumn('title', 'string', null, array( 'type' => 'string', 'fixed' => false, 'unsigned' => false, 'primary' => false, 'notnull' => false, 'autoincrement' => false, )); $this->hasColumn('text', 'string', null, array( 'type' => 'string', 'fixed' => false, 'unsigned' => false, 'primary' => false, 'notnull' => false, 'autoincrement' => false, $this->hasColumn('url', 'string', 255, array( 'type' => 'string', 'length' => 255, 'fixed' => false, 'unsigned' => false, 'primary' => false, 'notnull' => false, 'autoincrement' => false, )); } public function setUp() { parent::setUp(); $this->hasMany('Tag as Tags', array( 'local' => 'article_id', 'foreign'=>'tag_id', 'refClass'=>'Articletag') ); } } The BaseTag-class like this: abstract class BaseTag extends Doctrine_Record { public function setTableDefinition() { $this->setTableName('tag'); $this->hasColumn('tag_id', 'integer', 4, array( 'type' => 'integer', 'length' => 4, 'fixed' => false, 'unsigned' => false, 'primary' => true, 'autoincrement' => true, )); $this->hasColumn('name', 'string', null, array( 'type' => 'string', 'fixed' => false, 'unsigned' => false, 'primary' => false, 'notnull' => false, 'autoincrement' => false, )); } public function setUp() { parent::setUp(); $this->hasMany('Article as Articles', array( 'local' => 'tag_id', 'foreign'=>'article_id', 'refClass'=>'Articletag') ); } } And the relationship class like this: abstract class BaseArticletag extends Doctrine_Record { public function setTableDefinition() { $this->setTableName('articletag'); $this->hasColumn('article_id', 'integer', 8, array( 'type' => 'integer', 'length' => 8, 'fixed' => false, 'unsigned' => false, 'primary' => true, 'autoincrement' => false, )); $this->hasColumn('tag_id', 'integer', 4, array( 'type' => 'integer', 'length' => 4, 'fixed' => false, 'unsigned' => false, 'primary' => true, 'autoincrement' => false, )); } public function setUp() { parent::setUp(); } } When I try to get a property from the article all goes well by using: $article = Doctrine_Query::create()->from('Article a') ->where('id = ?' , 1) ->fetchOne(); echo $article->title; //gives me the title But when I try this: foreach($article->Tags as $tag) { echo($tag->name) } I get an error: Unknown record property / related component "Tags" on "Article"

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  • I need to create Trigger for delete action which backsup all fields old value in audit table

    - by Parth
    I need to create Trigger for delete action which backsup all fields old value in audit table. I have a table structure for audit table as id, menuid, field, oldvalue, changedone now whenever any of the row is deleted from its mother table(menu) having 21 fields in count, every fields old value should get insert in the audit table with new audit id.. like If I delete a row having fields as: menuid, name, age, address, sex, town now in audit table 6 rows should get inserted seperately for every field given above as: AUdit Table: id=2(audittable id) menuid = menuid field = name oldvalue = joy changedone = (whatever the deleted time was) id=3(audittable id) menuid = menuid field = age oldvalue = 23 changedone = (whatever the deleted time was) an so on..

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  • How can I delete, break, or otherwise convert cross references to simple text in microsoft word 2013

    - by Mr Purple
    Cross referencing figure and table captions is useful while editing a document but can become confude when copying and pasting between large documents. I need to pass my document to a colleague who will collate my document with others and has requested that I remove or delete any cross referencing so that my "correct" cross references do not interfere or get interfered with by any other cross references that may be in my colleagues master collated document. My document will be cut and pasted into the master and no further complicated instructions after that point will be tolerated by my colleague. Is there a simple way to convert my cross references to simple text? I am using microsoft word 2013.

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  • Delete the pendrive contents and also trash in Mac OS X?

    - by Warrior
    I am using a MacBook Pro. I copied some data from my pen drive to my Mac and deleted the content by moving it to trash. After that when I see the info of pen drive it give more value than the original value. If I cleaned the content of the trash only I am able to see the correct value of pen drive and able to copy data. Has Mac been designed like that or is there some other way to delete other than using the "move to trash" option? Thanks.

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