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• class vs structure c#

  - by Enriquev

  I'm doing course 3354 (Implementing System Types and Interfaces in the .NET Framework 2.0) and it is said that for simple classes, with members variables and functions, it is better to use a struct than a class because of overhead. I have never heard of such a thing, what is the validity of this claim?

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• Drop shadows to the div using images

  - by Shivanand

  I am working on a div which should show a drop shadow at the bottom and right. Here is the link to the html page. I dont know why the classes are not getting applied to the div. Your help is highly appreciated. Tooltip.html Here is the image mock-up which shows the Drop shadow affect Image-mockup

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• Fluent NHibernate: How to map an entire class as ReadOnly?

  - by Rafael E. Belliard

  I have a few classes that read from very delicate tables, which is why I want them to be used by NHibernate as "ReadOnly". Establishing .ReadOnly() on each field map is really sloppy, and I'm not sure I trust it. How do I setup a class to be entirely readonly, as I can easily do with traditional XML mappings? Thanks.

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• How can I use the HSL colorspace in Java?

  - by Eric

  I've had a look at the ColorSpace class, and found the constant TYPE_HLS (which presumably is just HSL in a different order). Can I use this constant to create a Color from hue, saturation, and luminosity? If not, are there any Java classes for this, or do I need to write my own?

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• How to run test suit with Spring TestContext ?

  - by lisak

  Hey, I can't figure out, how to set up following scenario with Sprint TestContext with either JUnit4 or testNG: @BeforeTestSuit - oneTimeSetUp @BeforeClass @Before - setUp @Test - testEmptyCollection @After - tearDown @Before - setUp @Test - testEmptyCollection @After - tearDown @AfterClass @BeforeClass @Before - setUp @Test - testOneItemCollection @After - tearDown @Before - setUp @Test - testEmptyCollection @After - tearDown @AfterClass @AfterTestSuit - oneTimeTearDown Could please anybody help me out here ? My architecture is a parent class with @RunWith(SpringJUnit4ClassRunner.class) that is extended with particular test classes.

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• Java method get the inheriting type

  - by DrDro

  I have several classes that extend C and I would need a method that accepts any argument of type C. But in this method I would like to know if I'm dealing with A or B. * public A extends C public B extends C public void goForIt(C c)() If I cast how can I retrieve the type in a clean way (I just read using getClass or instanceof is often not the best way). PS: Fell free to edit an explicit title. *Sorry but I can't type closing braces

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• What is the difference between type and type.__new__ in python?

  - by Jason Baker

  I was writing a metaclass and accidentally did it like this: class MetaCls(type): def __new__(cls, name, bases, dict): return type(name, bases, dict) ...instead of like this: class MetaCls(type): def __new__(cls, name, bases, dict): return type.__new__(cls, name, bases, dict) What exactly is the difference between these two metaclasses? And more specifically, what caused the first one to not work properly (some classes weren't called into by the metaclass)?

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• Binding Jar Library

  - by Juliano

  I'm trying to bind a jar library (jCIFS) on MFA, but i'm stuck on some errors, like this one: 'Jcifs.Util.MD4' does not implement inherited abstract member 'Java.Security.MessageDigestSpi.EngineDigest() After some research, i found some topics about this, telling to edit the metadata to change the permissions of the classes, like this: <attr path="/api/package[@name='java.security']/class[@name='MessageDigestSpi']/method[@name='engineDigest']" name="visibility">public</attr> But the error didn't change, and a still won't get what this error means. Anyone ? Thanks.

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• Ruby Rails _without_ ActiveRecord

  - by devlearn

  Hello, I'm looking for any pointers on how to write a rails web app without ActiveRecord. A doc or an example of a (not too complex) web app using storage backends other than a relational database would be greatly appreciated. It's not clear on what should be implemented in the model classes in order to make the rails app work without the ActiveRecord layer. Thanks,

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• Generating db schema from c# class

  - by Niran

  Hi, Is there any other method than nHibernate by wich we can generate db schema from class definition? My classes arn't that complex etc (few one-to-many relations). However I would like to just be able to save my objects in db and recreate schema if needed. I am stuck with .NET 2.0. I am not that particular about performance for this project, I am just lazy to create tables and write save/load code and deel with nHibernate xml. Thanks

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• ASP.NET MVC 2: Linq to SQL entity w/ ForeignKey relationship and Default ModelBinder strangeness

  - by Simon

  Once again I'm having trouble with Linq to Sql and the MVC Model Binder. I have Linq to Sql generated classes, to illustrate them they look similar to this: public class Client { public int ClientID { get; set; } public string Name { get; set; } } public class Site { public int SiteID { get; set; } public string Name { get; set; } } public class User { public int UserID { get; set; } public string Name { get; set; } public int? ClientID { get; set; } public EntityRef<Client> Client { get; set; } public int? SiteID { get; set; } public EntityRef<Site> Site { get; set; } } The 'User' has a relationship with the 'Client' and 'Site . The User class has nullable ClientIDs and SiteIDs because the admin users are not bound to a Client or Site. Now I have a view where a user can edit a 'User' object, the view has fields for all the 'User' properties. When the form is submitted, the appropiate 'Save' action is called in my UserController: public ActionResult Save(User user, FormCollection form) { //form['SiteID'] == 1 //user.SiteID == 1 //form['ClientID'] == 1 //user.ClientID == null } The problem here is that the ClientID is never set, it is always null, even though the value is in the FormCollection. To figure out whats going wrong I set breakpoints for the ClientID and SiteID getters and setters in the Linq to Sql designer generated classes. I noticed the following: SiteID is being set, then ClientID is being set, but then the Client EntityRef property is being set with a null value which in turn is setting the ClientID to null too! I don't know why and what is trying to set the Client property, because the Site property setter is never beeing called, only the Client setter is being called. Manually setting the ClientID from the FormCollection like this: user.ClientID = int.Parse(form["ClientID"].ToString()); throws a 'ForeignKeyReferenceAlreadyHasValueException', because it was already set to null before. The only workaround I have found is to extend the generated partial User class with a custom method: Client = default(EntityRef<Client>) but this is not a satisfying solution. I don't think it should work like this? Please enlighten me someone. So far Linq to Sql is driving me crazy! Best regards

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• How to set offset in GORM when using createCriteria?

  - by firnnauriel

  I'm just wondering if it's possible for 'createCriteria' to specify the paginateParams (i.e. offset) similar to dynamic finder (findAll, etc.) Note that this code is not working since 'offset' is not documented in http://www.grails.org/doc/1.2.1/ref/Domain%20Classes/createCriteria.html def c = SnbrItemActDistance.createCriteria() def results = c.list { eq('iid', newsId) ge('distance', cap) maxResults(count) offset(offset) order('distance', 'desc') }

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• importing class and its function from another file

  - by user343934

  Hi everyone, I am having little problem with importing classes in python. My work flow goes like this index.py class Template: def header(): def body(): def form(): def footer(): display.py I want to call function header(), body() and footer () in my display.py page. Will anyone make me clear about this issue in python. Thanks for your concern.

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• How do I change content of ComboFieldEditor?

  - by fastcodejava

  I want to change the values on one ComboFieldEditor depending on another ComboFieldEditor in an eclipse plugin. E.g. if the user changes the package, different classes need to be populated in the second ComboFieldEditor. The ComboFieldEditor class does not seem to to have a way to change the items on the fly.

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• Can you start an outside process with Silverlight?

  - by Crackerjack

  The System.Diagnostics assembly is part of the Silverlight CLR framework, but it only includes classes related to debugging, the Process class is not available. Is there any other way to start an outside process from a Silverlight application?

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• In Selenium, how do I turn off logging?

  - by someguy

  I am using the following method: set_browser_log_level 'off' but my log level continues to include INFOs. I am trying to suppress both logging and the "Last 4 commands" display for when my test enters a login password. http://release.seleniumhq.org/selenium-remote-control/0.9.2/doc/ruby/classes/Selenium/SeleniumDriver.html#M000128

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• Struts 2 session values

  - by Newbie

  I need to pass some field values from one jsp to another jsp using Struts2 and action classes. Can any one suggest me the best way to do it. How to pass values using SessionAware interface?

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• How can I load a property lazily in JDO (on Google App Engine)?

  - by luciano

  I have this code in one of my @PersistenceCapable classes: @Persistent private Blob data; The Blob can be quite big, so I'd like to load it lazily since most of the times I don't need it. How can I annotate that property to avoid immediate loading? I could create another class that contains the Blob alone and then use a lazy one-to-one, but I'd like to solve this with annotations.

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• Base class with abstract subclasses in C# ?

  - by Nick Brooks

  public abstract class Request { public class Parameters { //Threre are no members here //But there should be in inherited classes } public Request() { parameters = new Parameters(); } public Parameters parameters; } Two questions: How do I make it so I can add stuff to the constructor but the original constructor will still be executed? How do I make it so the subclasses can add members to the Parameters class?

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• Why should GoTos be bad?

  - by lisn

  I'm using gotos and a lot of them. C++, PHP or COBOL - I use them on nearly all occasions where everybody else would use functions or even classes. Yet my code is Clear Maintainable Bug-free Fast So why does everybody I meet tell me about how bad gotos are? Are there any facts that show that they are "bad"?

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• where can I bring com.ms.* packeges to build

  - by Bassel Alkhateeb

  I'm trying to build mS-java compatible applet and I have references to classes in com.ms.*. But I can't find the required libraries.

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• ZendSession giving fatal error when trying to include...

  - by Ronedog

  I'm getting an error when trying to include Session.php for the ZendFramework. Here's how I include it: $ZEND_LIBRARY_PATH = "path_to_zend_library_folder"; set_include_path( get_include_path() . PATH_SEPARATOR . $ZEND_LIBRARY_PATH); include_once '../classes/zend/library/zend/Session.php'; $account_info = new Zend_Session_Namespace('account'); The file gets included ok, but I get this error: Cannot redeclare class Zend_Session How can I get this to work?

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• Thread Management Object

  - by Gusdor

  I feel rather foolish as this is just a short question. I was reading about a bunch of thread management helper classes in .net, specifically one that aids the storage of threads to help a service manager object automatically invoke delegates onto the subscribing thread. I'm pretty sure it had something to do with creating dispatchers. Totally forgotten the name, can't find it :( Anyone know what I'm talking about?

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• Linq2SQL InfoMessage

  - by Paul Oakham

  Hi, is it possible to access the InfoMessage event handler in a Linq2SQL data context? All of our code uses these messages to display useful information to the end user and since moving to Linq2SQL I cannot figure out how to show these messages. I have checked the connection object of the data context as well as the classes properties with no luck so I'm wondering if it is possible. Thanks in advance.

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• Find out why Xcode has decided to link to a particular library

  - by andygeers

  I'm using the Unity 3D engine to build an iPhone app, and when I go to generate my Xcode project for compilation, it includes a few fairly large libraries: Mono.Security.dll.s, System.dll.s, System.Core.dll.s, etc. I don't know if this question is really an Xcode question or a Unity question, but I'm trying to figure out why each of those libraries is being linked - which functions / classes are being referenced - ideally so that I can rewrite my code to remove as many of the dependencies as possible. Does anybody know a way to find this information out?

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