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• Still Confused About Identifying vs. Non-Identifying Relationships

  - by Jason

  So, I've been reading up on identifying vs. non-identifying relationships in my database design, and a number of the answers on SO seem contradicting to me. Here are the two questions I am looking at: What's the Difference Between Identifying and Non-Identifying Relationships Trouble Deciding on Identifying or Non-Identifying Relationship Looking at the top answers from each question, I appear to get two different ideas of what an identifying relationship is. The first question's response says that an identifying relationship "describes a situation in which the existence of a row in the child table depends on a row in the parent table." An example of this that is given is, "An author can write many books (1-to-n relationship), but a book cannot exist without an author." That makes sense to me. However, when I read the response to question two, I get confused as it says, "if a child identifies its parent, it is an identifying relationship." The answer then goes on to give examples such as SSN (is identifying of a Person), but an address is not (because many people can live at an address). To me, this sounds more like a case of the decision between primary key and non-primary key. My own gut feeling (and additional research on other sites) points to the first question and its response being correct. However, I wanted to verify before I continued forward as I don't want to learn something wrong as I am working to understand database design. Thanks in advance.

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• Static Vs Non-Static Method Performance C#

  - by dotnetguts

  Hello All, I have few global methods declared in public class in my asp.net web application. I have habbit of declaring all global methods in public class in following format public static string MethodName(parameters) { } I want to know how it would impact on performance point of view? 1) Which one is Better? Static Method or Non-Static Method? 2) Reason why it is better? Following link shows Non-Static methods are good because, static methods are using locks to be Thread-safe. The always do internally a Monitor.Enter() and Monitor.exit() to ensure Thread-safety. http://bytes.com/topic/c-sharp/answers/231701-static-vs-non-static-function-performance And Following link shows Static Methods are good static methods are normally faster to invoke on the call stack than instance methods. There are several reasons for this in the C# programming language. Instance methods actually use the 'this' instance pointer as the first parameter, so an instance method will always have that overhead. Instance methods are also implemented with the callvirt instruction in the intermediate language, which imposes a slight overhead. Please note that changing your methods to static methods is unlikely to help much on ambitious performance goals, but it can help a tiny bit and possibly lead to further reductions. http://dotnetperls.com/static-method I am little confuse which one to use? Thanks

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• SQLAlchemy, one to many vs many to one

  - by sadvaw

  Dear Everyone, I have the following data: CREATE TABLE `groups` ( `bookID` INT NOT NULL, `groupID` INT NOT NULL, PRIMARY KEY(`bookID`), KEY( `groupID`) ); and a book table which basically has books( bookID, name, ... ), but WITHOUT groupID. There is no way for me to determine what the groupID is at the time of the insert for books. I want to do this in sqlalchemy. Hence I tried mapping Book to the books joined with groups on book.bookID=groups.bookID. I made the following: tb_groups = Table( 'groups', metadata, Column('bookID', Integer, ForeignKey('books.bookID'), primary_key=True ), Column('groupID', Integer), ) tb_books = Table( 'books', metadata, Column('bookID', Integer, primary_key=True), tb_joinedBookGroup = sql.join( tb_books, tb_groups, \ tb_books.c.bookID == tb_groups.c.bookID) and defined the following mapper: mapper( Group, tb_groups, properties={ 'books': relation(Book, backref='group') }) mapper( Book, tb_joinedBookGroup ) ... However, when I execute this piece of code, I realized that each book object has a field groups, which is a list, and each group object has books field which is a singular assigment. I think my definition here must have been causing sqlalchemy to be confused about the many-to-one vs one-to-many relationship. Can someone help me sort this out? My desired goal is g.books = [b, b, b, .. ] book.group = g, where g is an instance of group, and b is an instance of book

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• VS ASP.NET 500 Server Error

  - by rlb.usa

  Hey guys, I'm having a super weird problem with my VS 2008 solution. We had this hand-coded ASP.NET compiled web app on our old IIS6/Win2003 server, working great, moved it to our new IIS7/Win2008 server, still working great, but when I try to compile the application and publish it again to our new Win2008 server, I get server 500 errors. It's ASP.NET 2.0 with AJAX extensions and AJAX control toolkit. I'm not too great with server issues, or even sure if it is a server issue but here are some more symptoms... ? I know the website works (it only differs by some minor code fixes) and can use it's code on a development machine, there are no errors, and it publishes fine. Publishing (using the DLL files), and even not publishing and trying to use the code-behind files on our new server, both no success. The old website does work on the new server just fine. If I put a simple hello world html page in the website's virtual directory, with the old code, it works fine, but with the new code, that html page gets the 500 error. And in fact, oddly, I can add all the files to the website, only when I add the web.config, do I get the 500 error. The web.config has not changed. Tried stopping and restarting IIS What's the problem, here? Any ideas, what else can I do to troubleshoot the problem?

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• How to secure connection strings in VS?

  - by salvationishere

  I see several others have posted this question, however, none of the solutions I've tried have fixed this yet. I have a 32-bit XP running VS 2008 and I am trying to encrypt my connection string in my web.config file. But I am getting the error: The configuration section '...' was not found. Failed! The command I give it: C:\Program Files\Microsoft Visual Studio 9.0\VCAspnet_regiis.exe -pe "system.we b/AdventureWorksConnectionString2" -app "/Documents and Settings/Admin/My Docume nts/Visual Studio 2008/Projects/AddFileToSQL2" Also, how does -app map virtual directory? In other words the path above is the directory right below c:. Is this the correct path to use? And AddFileToSQL2 is the name of my project, although it is part of the AddFileToSQL solution. I have this folder web shared with all of the permissions. And the relevant part of my web.config file: <add name="AdventureWorksConnectionString2" connectionString="Data Source=SIDEKICK;Initial Catalog=AdventureWorks;Persist Security Info=true; User ID=AdventureWorks;Password=sqlMagic" providerName="System.Data.SqlClient" />

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• Confused about std::runtime_error vs. std::logic_error

  - by David Gladfelter

  I recently saw that the boost program_options library throws a logic_error if the command-line input was un-parsable. That challenged my assumptions about logic_error vs. runtime_error. I assumed that logic errors (logic_error and its derived classes) were problems that resulted from internal failures to adhere to program invariants, often in the form of illegal arguments to internal API's. In that sense they are largely equivalent to ASSERT's, but meant to be used in released code (unlike ASSERT's which are not usually compiled into released code.) They are useful in situations where it is infeasible to integrate separate software components in debug/test builds or the consequences of a failure are such that it is important to give runtime feedback about the invalid invariant condition to the user. Similarly, I thought that runtime_errors resulted exclusively from runtime conditions outside of the control of the programmer: I/O errors, invalid user input, etc. However, program_options is obviously heavily (primarily?) used as a means of parsing end-user input, so under my mental model it certainly should throw a runtime_error in the case of bad input. Where am I going wrong? Do you agree with the boost model of exception typing?

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• Setting Icon for wpf application (VS 08)

  - by baron

  Hi everyone, Before going much further i'll mention I have tried solutions in following: http://stackoverflow.com/questions/320677/how-do-i-set-the-icon-for-my-application-in-visual-studio-2008 http://stackoverflow.com/questions/198848/set-application-icon-from-resources-in-vs-05 I am trying to set an icon for my application. AFAIK, I need potentially 3 images? 1 image is the actual image in explorer when clicking on the .exe (thumbnail for the exe) 1 image (tiny) in the top left corner (16 x 16? Not entirely sure) 1 image in the start menu dock, to the left of the app (maybe 32x32? again not sure) So thats fine. Now I have selected an Icon. How do I use it in one of above situations? I have tried adding it in resources, nothing seems to happen. Following that first SO solution, "First go to Resource View (from menu: View -- Other Window -- Resource View). Then in Resource View navigate through resources, if any. If there is already a resource of Icon type, added by Visual Studio, then open and edit it. Otherwise right-click and select Add Resource, and then add a new icon." The resource view is empty, and I cannot right click in this view. If I right click on the solution properties resources I can add the icon image, but it doesn't show in either of the locations listed above. (or anywhere that I can see) What am I doing wrong?

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• C++, overloading std::swap, compiler error, VS 2010

  - by Ian

  I would like to overload std::swap in my template class. In the following code (simplified) #ifndef Point2D_H #define Point2D_H template <class T> class Point2D { protected: T x; T y; public: Point2D () : x ( 0 ), y ( 0 ) {} Point2D( const T &x_, const T &y_ ) : x ( x_ ), y ( y_ ) {} .... public: void swap ( Point2D <T> &p ); }; template <class T> inline void swap ( Point2D <T> &p1, Point2D <T> &p2 ) { p1.swap ( p2 ); } namespace std { template <class T> inline void swap ( Point2D <T> &p1, Point2D <T> &p2 ) { p1.swap ( p2 ); } } template <class T> void Point2D <T>::swap ( Point2D <T> &p ) { using (std::swap); swap ( x, p.x ); swap ( y, p.y ); } #endif there is a compiler error (only in VS 2010): error C2668: 'std::swap' : ambiguous call to overloaded I do not know why, std::swap should be overoaded... Using g ++ code works perfectly. Without templates (i.e. Point2D is not a template class) this code also works.. Thanks for your help.

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• what happens when you stop VS debugger?

  - by mare

  If I have a line like this ContentRepository.Update(existing); that goes into datastore repository to update some object and I have a try..catch block in this Update function like this: string file = XmlProvider.DataStorePhysicalPath + o.GetType().Name + Path.DirectorySeparatorChar + o.Slug + ".xml"; DataContractSerializer dcs = new DataContractSerializer(typeof (BaseContentObject)); using ( XmlDictionaryWriter myWriter = XmlDictionaryWriter.CreateTextWriter(new FileStream(file, FileMode.Truncate, FileAccess.Write), Encoding.UTF8)) { try { dcs.WriteObject(myWriter, o); myWriter.Close(); } catch (Exception) { // if anything goes wrong, delete the created file if (File.Exists(file)) File.Delete(file); if(myWriter.WriteState!=WriteState.Closed) myWriter.Close(); } } then why would Visual Studio go on with calling Update() if I click "Stop" in debugging session on the above line? For instance, I came to that line by going line by line pressing F10 and now I'm on that line which is colored yellow and I press Stop. Apparently what happens is, VS goes to execute the Update() method and somehow figures out something gone wrong and goes into "catch" and deletes the file, which is wrong, because I want my catch to work when there is a true exception not when I debug a program and force to stop it.

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• for loop vs std::for_each with lambda

  - by Andrey

  Let's consider a template function written in C++11 which iterates over a container. Please exclude from consideration the range loop syntax because it is not yet supported by the compiler I'm working with. template <typename Container> void DoSomething(const Container& i_container) { // Option #1 for (auto it = std::begin(i_container); it != std::end(i_container); ++it) { // do something with *it } // Option #2 std::for_each(std::begin(i_container), std::end(i_container), [] (typename Container::const_reference element) { // do something with element }); } What are pros/cons of for loop vs std::for_each in terms of: a) performance? (I don't expect any difference) b) readability and maintainability? Here I see many disadvantages of for_each. It wouldn't accept a c-style array while the loop would. The declaration of the lambda formal parameter is so verbose, not possible to use auto there. It is not possible to break out of for_each. In pre- C++11 days arguments against for were a need of specifying the type for the iterator (doesn't hold any more) and an easy possibility of mistyping the loop condition (I've never done such mistake in 10 years). As a conclusion, my thoughts about for_each contradict the common opinion. What am I missing here?

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• Nokia sort sa carte « Here Maps » sur iOS et prévoit un SDK pour une version Android début 2013

  Nokia sort son application « Here Maps » pour iOS Et prévoit un SDK pour une version Android début 2013 Au cas où certains l'auraient oublié, la guerre des « Maps » ne se passe pas qu'entre Google et Apple. Un des acteurs majeurs du secteur s'appelle Nokia. Et depuis aujourd'hui, Nokia a lancé son application gratuite sur l'AppStore. « Here Maps » pour iOS propose la géolocalisation, la vue satellite, la possibilité d'enregistrer des extraits de cartes pour une consultation hors-ligne, le trafic en temps réel, le partage de points d'intérêts (je signale une chose intéressante sur la carte et les personnes avec qui je la partage la voient) sans oublier la navigation et le gu...

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• Nokia sort sa carte « Here Maps » pour iOS et prévoit un SDK pour une version Android début 2013

  Nokia sort son application « Here Maps » pour iOS Et prévoit un SDK pour une version Android début 2013 Au cas où certains l'auraient oublié, la guerre des « Maps » ne se passe pas qu'entre Google et Apple. Un des acteurs majeurs du secteur s'appelle Nokia. Et depuis aujourd'hui, Nokia a lancé son application gratuite sur l'AppStore. « Here Maps » pour iOS propose la géolocalisation, la vue satellite, la possibilité d'enregistrer des extraits de cartes pour une consultation hors-ligne, le trafic en temps réel, le partage de points d'intérêts (je signale une chose intéressante sur la carte et les personnes avec qui je la partage la voient) sans oublier la navigation et le gu...

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• Windows Azure : Microsoft met à jour son kit de prise en main de la plateforme avec de nouvelles démos de SQL Azure et du SDK 1.6

  Microsoft met à jour son kit de prise en main de Windows Azure Avec de nouvelles démos de SQL Azure et du SDK 1.6 Windows Azure, la plateforme hébergée de Microsoft dédiée aux développeurs, ne cesse d'évoluer. Elle s'ouvre à d'autres technologies que .NET (Java, Ruby, PHP, Python). Sa tarification baisse (plus de frais pour uploader les données). Et ses outils comme SQL Azure s'automatisent de plus en plus et vise à se simplifier le plus possible. « Ce n'est pas du développement sur le Cloud mais pour le Cloud », expliquait à Developpez.com Julien L...

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• RIM met à jour son SDK pour BlackBerry pour mettre fin à l'exode des développeurs vers Android : suf

  Mise à jour du 07/04/10 RIM met à jour ses outils pour BlackBerry Et tente de mettre fin à l'exode des développeurs vers Android et iPhone OS Research in Motion, la société qui gère l'OS et les outils de développement pour les BlackBerry, vient de sortir un nouveau plug-in BlackBerry Java pour Eclipse ? le 1.1, qui permet de simuler le fonctionnement d'une appli sur les différents types de modèles de marque, la version 2.0 du BlackBerry Web plug-in (pour Eclipse et Visual Studio) et un nouveau SDK (BlackBerry Java software development kit) ? qui inclue pas moins de 20.000 APIs (calendrier, contacts, caméra, etc.). Le but est claire, rendre la...

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• Capteur de mouvements d'Intel : l'inscription au concours repoussée au 2 juillet, téléchargez le SDK et soumettez vos idées d'applications

  Capteur de mouvements d'Intel : l'incription au concours de développement repoussée au 2 juillet Téléchargez le SDK et soumettez vos idées d'applicationsAu cas où vous ne le sauriez pas, Intel s'est lancé il y a peu dans les Natural Interfaces (ou NUI) avec un capteur de mouvement/caméra ? vous avez dit Kinect ? ? baptisé sobrement « Gesture Camera ». Cet appareil a été conçu en collaboration avec le constructeur Creative et dévoilé au CES 2013 de Las Vegas. Pour l'occasion, Intel a également décidé d'organiser un grand concours de programmation autour de ce concept de « développement ...

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• Tizen 2.0 disponible avec son SDK, Samsung pourrait bientôt lancer un smartphone sous l'OS mobile open source fondé sur Linux

  Tizen 2.0 disponible avec son SDK Samsung pourrait bientôt lancer un smartphone sous l'OS open source fondé sur Linux Tizen 2.0, le système d'exploitation mobile open source fondé sur Linux est désormais disponible en version alpha avec son kit de développement. Tizen est né à la suite de l'abandon de MeeGo par Nokia. Il est soutenu par les développeurs de MeeGo d'Intel, Samsung et la fondation Linux. L'OS est destiné à une large gamme de dispositifs dont les smartphones, tablettes, netbooks, SmartTV et les systèmes de divertissement embarqués des véhicules. Cette étape importante du développement de Tizen montre un OS dont le code se rapproche d'une version qui pourra bientôt êtr...

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• AdMob arrive sur Windows Phone 7 avec un SDK, la plateforme publicitaire de Google adopte le HTML5 sur iOS et Android

  AdMob arrive sur Windows Phone 7 La plateforme publicitaire de Google adopte le HTML5 sur iOS et Android Google vient de lancer un nouveau Kit de Développement pour Windows Phone 7 en rapport avec AdMob, son réseau publicitaire sur mobile. Il annonce par la même occasion de nouvelles fonctionnalités pour les autres plateformes. Similaire aux autres kits de développements pour iOS, Android et webOS, le nouveau SDK offre aux développeurs Windows Phone 7 la possibilité de contrôler le type (textes ou bannières), l'apparence, la taille et le comportement des clics publicitaires intégrés à leurs applications (ouverture d'une page web, accès direct à l'App Marketplace, etc.).

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• Google Drive : une version pour iOS s'attaque à iCloud, un nouveau SDK et un mode hors-ligne pour Chrome sont disponibles

  Google Drive : une version pour iOS s'attaque à iCloud Un nouveau SDK et un mode hors-ligne pour Chrome sont disponibles Tout comme Chrome (disponible pour iOS) et tout comme les Google Maps (accessible hors-ligne sur Android), Google Drive ? le service de stockage qui chapeaute à présent Google Docs ? est disponible offline et sur les terminaux mobiles d'Apple. Hors-ligne. Ce qui signifie que l'utilisateur peut « créer et éditer des documents ou laisser un commentaire. Tous les changements seront automatiquement synchronisés dès que vous vous r...

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• Lancement de Windows Phone 8 : encore quelques nouveautés, les premiers modèles disponibles ce week-end et le SDK dès ce soir

  Lancement de Windows Phone 8 : Microsoft vise grand public et professionnels Les premiers modèles disponibles ce week-end, le SDK dès ce soir Microsoft en avait déjà beaucoup dit sur Windows Phone 8. Mais il lui en restait encore (un peu) à dévoiler. En France, sur la scène du Palais de Tokyo, c'est Marc Jalabert, le directeur de la division grand public et opérateurs de Microsoft France, qui a commencé par confirmer en guise de préambule que la galerie du nouvel OS avait bien dépassé les 120.000 applications. Une information jusqu'ici officieuse. Puis quelques minutes plus tard, c'est Joe Belfiore qui a de...

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• Une beta 4 et un SDK pour iPhone OS 4 : de nouveaux wallpapers et une application "Maps" plus précis

  Mise à jour iPhone OS 4 bêta 4 et SDK Apple a mis en ligne hier soir une nouvelle bêta de l'iPhone OS 4 (bêta 4). Cette version devrait se rapprocher de la version finale qui doit être présentée lors de la WWDC qui aura lieu le 7 juin. Peu d'information sur cette mise à jour de la part d'Apple, mais certains développeurs annoncent déjà les quelques nouveautés :Le support du mode modem pour les clients de chez AT&T. De nouveaux wallpapers. Amélioration de l'application "Maps" qui serait plus précise. La création un dossier "Utilitaires" créer par défaut avec les applications "Horloges", "Calculatrices"...

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• Une mise à jour de Kinect pour Windows et son SDK prévue pour octobre, support de .NET 4.5, Windows 8 et nouveaux outils au menu

  Microsoft annonce une mise à jour de Kinect pour Windows et de son SDK pour octobre support de .NET 4.5, Windows 8 et nouveaux outils au menu Le capteur de mouvements et de reconnaissance vocale Kinect pour Windows ainsi que son kit de développement recevront une mise à jour le mois prochain. L'équipe de Microsoft responsable du produit vient de livrer dans un billet de blog quelques-unes de ses intentions concernant celui-ci pour la fin d'année. La déclinaison pour PC Windows de la technologie sera dotée de nouvelles fonctionnalités qui vont offrir « une puissance supplémentaire pour les développeurs Windows et les entreprises ». La prochaine version du logiciel d'e...

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• La mise à jour du SDK Kinect pour Windows disponible : support de Windows 8, Visual Studio 2012 et ajout de nouvelles caractéristiques

  Microsoft annonce une mise à jour de Kinect pour Windows et de son SDK pour octobre support de .NET 4.5, Windows 8 et nouveaux outils au menu Le capteur de mouvements et de reconnaissance vocale Kinect pour Windows ainsi que son kit de développement recevront une mise à jour le mois prochain. L'équipe de Microsoft responsable du produit vient de livrer dans un billet de blog quelques-unes de ses intentions concernant celui-ci pour la fin d'année. La déclinaison pour PC Windows de la technologie sera dotée de nouvelles fonctionnalités qui vont offrir « une puissance supplémentaire pour les développeurs Windows et les entreprises ». La prochaine version du logiciel d'e...

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• Qt vs .NET - plz no n00bs who don't know wtf they're talking about [closed]

  - by Pirate for Profit

  Man in all these Qt vs. .NET discussions 90% these people don't know WTF they're talking about. Trying to get a real comparison chart going before we embark on a major fucking project. And yes I'm drunk, and yes I use cocaine. Event Handling In Qt the event handling system you just emit signals when something cool happens and then catch them in slots, for instance emit valueChanged(int percent, bool something); and void MyCatcherObj::valueChanged(int p, bool ok){} blocking them and disconnecting them when needed, doing it across threads... once you get the hang of it, it just seems a lot more natural and intuitive than the way the .NET event handling is set up (you know, object sender, CustomEventArgs e). And I'm not just talking about syntax, because in the end the .NET delegate crap is the bomb. I'm also talking about in more than just reflection (because, yes, .NET obviously has much stronger reflection capabilities). I'm talking about in the way the system feels to a human being. Qt wins hands down i m o. Basically, the footprints make more sense and you can visualize the project easier without the clunky event handling system. I wish I could it explain it better. The only thing is, I do love some of the ease of C# compared to C++ and .NET's assembly architecture. That is a big bonus for modular projects, which are a PITA to do in C++. Database Ease of Doing Crap Also what about datasets and database manipulations. I think .net wins here but I'm not sure. Threading/Conccurency How do you guys think of the threading? In .NET, all I've ever done is make like a list of master worker threads with locks. I like QConcurrentFramework, you don't worry about locks or anything, and with the ease of the signal slot system across threads it's nice to get notified about the progress of things. Memory Usage Also what do you think of the overall memory usage comparison. Is the .NET garbage collector pretty on the ball and quick compared to the instantaneous nature of native memory management? Or does it just let programs leak up a storm and lag the computer then clean it up when it's about to really lag? However, I am a n00b who doesn't know what I'm talking about, please school me on the subject.

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• QT vs. Net - REAL comparisons for R.A.D. projects

  - by Pirate for Profit

  Man in all these Qt vs. .NET discussions 90% these people argue about the dumbest crap. Trying to get a real comparison chart here, because I know a little about both frameworks but I don't know everything. I believe Qt and .NET both have strengths and weaknesses. This is to make a comparison that highlights these so people can make more informed decisions before embarking on a project, in the spirit of R.A.D. Event Handling In Qt the event handling system is very simple. You just emit signals when something cool happens and then catch them in slots. ie. // run some calculations, then emit valueChanged(30, false, 20.2); and then catching it, any object can make a slot to recieve that message easily void MyObj::valueChanged(int percent, bool ok, float timeRemaining). It's easy to "block" an event or "disconnect" when needed, and works seamlessly across threads... once you get the hang of it, it just seems a lot more natural and intuitive than the way the .NET event handling is set up (you know, void valueChanged(object sender, CustomEventArgs e). And I'm not just talking about syntax, because in the end the .NET anonymous delegates are the bomb. I'm also talking about in more than just reflection (because, yes, .NET obviously has much stronger reflection capabilities). I'm talking about in the way the system feels to a human being. Qt wins hands down for the simplest yet still flexible event handling system ever i m o. Plugins and such I do love some of the ease of C# compared to C++, as well as .NET's assembly architecture, even though it leads to a bunch of .dll's (there's ways to combine everything into a single exe though). That is a big bonus for modular projects, which are a PITA to import stuff in C++ as far as RAD is concerned. Database Ease of Doing Crap Also what about datasets and database manipulations. I think .net wins here but I'm not sure. Threading/Conccurency How do you guys think of the threading? In .NET, all I've ever done is make like a list of master worker threads with locks. I like QConcurrentFramework, you don't worry about locks or anything, and with the ease of the signal slot system across threads it's nice to get notified about the progress of things. QConcurrent is the simplest threading mechanism I've ever played with. Memory Usage Also what do you think of the overall memory usage comparison. Is the .NET garbage collector pretty on the ball and quick compared to the instantaneous nature of native memory management? Or does it just let programs leak up a storm and lag the computer then clean it up when it's about to really lag? Doesn't the just-in-time compiler make native code that is pretty good, like and that only happens the first time the program is run? However, I am a n00b who doesn't know what I'm talking about, please school me on the subject.

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• stats::reorder vs Hmisc::reorder

  - by learnr

  I am trying to get around the strange overlap of stats::reorder vs Hmisc::reorder. Without Hmisc loaded I get the result I want, i.e. an unordered factor: > with(InsectSprays, reorder(spray, count, median)) [1] A A A A A A A A A A A A B B B B B B B B B B B B C C C C C C C C C C C C D D [39] D D D D D D D D D D E E E E E E E E E E E E F F F F F F F F F F F F attr(,"scores") A B C D E F 14.0 16.5 1.5 5.0 3.0 15.0 Levels: C E D A F B Now after loading Hmisc the result is an ordered factor: > library(Hmisc) Loading required package: survival Loading required package: splines Attaching package: 'Hmisc' The following object(s) are masked from 'package:survival': untangle.specials The following object(s) are masked from 'package:base': format.pval, round.POSIXt, trunc.POSIXt, units > with(InsectSprays, reorder(spray, count, median)) [1] A A A A A A A A A A A A B B B B B B B B B B B B C C C C C C C C C C C C D D [39] D D D D D D D D D D E E E E E E E E E E E E F F F F F F F F F F F F Levels: C < E < D < A < F < B In calling stats::reorder directly, I now for some reason get an ordered factor. > with(InsectSprays, stats::reorder(spray, count, median)) [1] A A A A A A A A A A A A B B B B B B B B B B B B C C C C C C C C C C C C D D [39] D D D D D D D D D D E E E E E E E E E E E E F F F F F F F F F F F F Levels: C < E < D < A < F < B Specifying, that I would need an unordered factor results in an error suggesting that stats::reorder is not used? > with(InsectSprays, stats::reorder(spray, count, median, order = FALSE)) Error in FUN(X[[1L]], ...) : unused argument(s) (order = FALSE) So the question really is how do I get an unordered factor with Hmisc loaded?

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