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• Design question: Should the client both create the session and the socket?

  - by the_drow

  I have three classes: Client Session Socket Both Session & Socket depeand on the Client to create both objects. A Session depeands on a Socket and no sockets are created without a session. Should the Client have a function that creates a Session pubically and a Socket privately? Doesn't it violate the law of demeter?

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• Ways to integrate OfBiz and 3rd party webapp

  - by archer

  Thought about RESTAPI, but seems OfBiz does not support it out of the box. Hate accessing domain objects directly (although may be enough for our needs, however, would intercept on Service/ECA level). Any ideas?

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• Linq, how to delete items in the middle of a query return?

  - by 5YrsLaterDBA

  I got a list of objects in the following query. How to delete items in the middle, saying I want to delete item in 2, 5, and 7 position? thanks var archivedPwds = from archivedPwd in db.PasswordArchive where archivedPwd.UserId == userId orderby archivedPwd.DateChanged select archivedPwd;

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• is there a performance different between passing something into viewdata compared to a view model

  - by ooo

  in asp.net mvc , if i shove a dictionary or an array of objects in ViewData and read that in my view compared to creating a view model class that has that same data structure, is there a performance difference or other consideration or should i expect the same response time?

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• Best reporting tool for .NET

  - by Marco Parenzan

  I have convinced a company to change Crystal Reports. But then? What to use? Telerik? I want: designer bind an object model, not a denormalized view execute from batch, generate report in batch export to word or many other formats reporting site Uh, my backend is Progress Software, so ODBC driver. Or NHibernate objects...

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• Alternatives of Datatable

  - by mavera

  In my web application, I have a dynamic query that returns huge data to datatable, and this query is often recalled with different parameters. So database is exhausted. I want to get all record with no parameters to an object, and perform queries (may be with linq) on this object. So database will not be exthausted. Which objects can be used instead of datatable?

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• .Net Hashtable - Contains vs ContainsKey

  - by Midhat

  I just notices the HashTable objects have a Contains and CotainsKey method, with same description. So are they just synonyms or is there som edifference behind the scenes

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• Will the memory rise if I loads a same URL for 1000 times in Adobe AIR?

  - by Yinan

  Hi, Here is the case: I have created a test application which simply loops to load a same url for 1000 times by using HTMLLoader class from Adobe AIR. What I found is that the memory of this app keeps rising. So is this expected? I mean it's the same URL although it get loaded for 1000 times. Does the AVM create 1000 objects behind the scene?

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• The type of the argument object [type] is not primitive.

  - by Abstract

  I'm trying to create a simple Guestbook web service using ASP.NET WebServices. When trying to serialize a list of objects, I get the following exception: System.InvalidOperationException: The type of the argument object 'GuestBookService.GuestBookEntry' is not primitive. How can I fix this error?

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• Which is the best data-warehousing tool to learn in the present market?

  - by uma

  I am graduating soon in electrical engineering. I would like to learn a data-warehousing tool. Which of the following would you suggest I learn to help me advance my career, bearing in mind I don't have a computer science degree? business objects; informatica; hyperion; datastage cognos

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• Saving MP3 playlist to file

  - by Northernen

  Hello. I am making my own crude MP3 player, and I now have a JList with which I have populated a number of files in the form of MP3 objects (displayed on frame using DefaultListModel). I would now like to have the oppurtunity to save this JList to a file on disk. How would I go about doing this? I'm very new with programming and Java, so help is greatly appreciated.

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• If I never ever use HashSet, should I still implement GetHashCode?

  - by Dimitri C.

  I never need to store objects in a hash table. The reason is twofold: coming up with a good hash function is difficult and error prone. an AVL tree is almost always fast enough, and it merely requires a strict order predicate, which is much easier to implement. The Equals() operation on the other hand is a very frequently used function. Therefore I wonder whether it is necessary to implement GetHashCode (which I never need) when implementing the Equals function (which I often need)?

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• How do you access the main obj from obj.foo.bar in javascript?

  - by bschaeffer

  Objects in javascript throw me for a loop! In this set up... var obj = { someVar: "my awesome variable", foo: { bar: function(){ alert(this.someVar); } } }; How would I get obj.foo.bar to correctly alert the value of someVar?

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• Grails many to many using a third 'join' class

  - by andy mccullough

  I read that a m:m relationship often means there is a third class that isn't yet required. So I have m:m on User and Project, and I created a third domain class, ProjectMembership The three domains are as follows (minimized for illustration purposes): User class User { String name static hasMany = [projectMemberships : ProjectMembership] } Project Membership class ProjectMembership { static constraints = { } static belongsTo = [user:User, project:Project] } Project: class Project { String name static hasMany = [projectMemberships : ProjectMembership] static constraints = { } } If I have the ID of the user, how can I get a list of Project objects that they are assigned to?

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• Java GC: top object classes promoted (by size)?

  - by Java Geek

  Hello! Please let me know what is the best way to determine composition of young generation memory promoted to old generation, after each young GC event? Ideally I would like to know class names which are responsible say, for 80% of heap in each "young gen - old gen" promotion chunk; Example: I have 600M young gen, each tenure promotes 6M; I want to know which objects compose this 6M. Thank you.

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• How can I move an object left and right with silverlight?

  - by Craig

  I currently have two buttons that say left and right, and I want them to move a square object left and right respectively. What its currently doing when i press left is moving the square to the left, and if I press left again, it resets from the center and goes left. I want it so that when I press left, from where ever it is currently to go left and right. I know the principle is something like get current objects position and add the canvas coordinates respectively but how do I do this?

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• Formset Messages

  - by Dave

  I want to be able to send a message using the new messages framework. Something along the lines of : ... if formset.is_valid return HttpResponseRedirect( some page ) messages.add_message(request,messages.INFO, '%i objects added') %formset.number_of_forms But two questions: Im not sure if i should put the messages before or after the render to response Is there a method akin to number_of_forms

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• Interpreter typing in C

  - by typus

  I'm developing an interpreter and I have some questions to it. I recently saw a small C interpreter that used a very simple struct like the below for all its objects/values in the language: struct Object { ubyte type; ubyte value; }; This struct can hold strings, integers, bools and lists (I think) used in the language the interpreter is working with. How can you get this Object struct to hold all these types?

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• Strategy for wiring up events?

  - by Jeffrey Cameron

  I'm using Ninject (1.5 ... soon to be 2) and I'm curious how other people use Ninject or other IoC containers to help wire up events to objects? It seems to me in my code that I'm doing it herky-jerky all over the place and would love some advice on how to clean it up a bit. What are people doing out there to manage this?

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• change sprite image cocos2d

  - by iPhone Fun

  hi friends, I want to change the sprite image while my application is running. I've taken 5 different sprite objects with different images. but when I use [self removeChild:Name of sprite cleanup:YES]; It is not removing the sprite. So is there any other way to perform such task?? Any help?? Thanks in advance.

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• return list from view to controller via viewmodel

  - by user232076

  I have a controller that takes in a viewmodel and submitbutton public ActionResult AddLocation(AddLocationViewModel viewModel, string submitButton) My view is bound to the viewmodel. The viewmodel contains a list objects used to create an html table with checkboxes. Is there a way to access the selected "rows" through the viewmodel in my controller? So that I can iterate through and get the selected items? Thanks LDD

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• How to handle null response for json object

  - by user1494754

  I get a JSON response as { "edges": [], "nodes": [] } how to check if the objects has null values and handle the case?? JSONObject jobj = new JSONObject(line); JSONArray jArray = jobj.getJSONArray("edges"); if(jArray.length()!=0) { for(int i=0;i<jArray.length();i++){ JSONObject json_data = jArray.getJSONObject(i); x.add((float) json_data.getInt("x")); y.add((float) json_data.getInt("y")); end This retrurns me : org.json.JSONException: end of input at character 0 of

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• Persisting and applying Linq Query to collection

  - by MattiasK

  I have a scenario where I would want a plugin to construct a LINQ (to objects) query, send it across an appdomain and then apply and run it against a collection of my choosing Is it possible, how? If not, perhaps I could send a whole method (interface) across the appdomain and run it against the data on the appside? The main thing is that I want the data to reside in the CurrentDomain and the logic for operating on it in the plugin so I don't have to send the data across the boundary...

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• A cross-platform application WPF, ASP.NET, Silverlight, WP7, XAML

  - by J. Lennon

  Considering the fact that all applications will interact with the web project (which will use the cloud or web services).. Is there any way to share my class models between applications? If yes, what is the best way to do it? About sending / receiving data from the Webservice, serialize and deserialize, how can I do this in a simple way without having to manually populate the objects? Any information about this applications would be really helpful!

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• Is null a class in java?

  - by Somerandomeguy

  According to, http://www.freshvanilla.org:8080/display/www/Java+Interview+Questions Under, Which class is the superclass of every class? null seems to be the answer. I found that new Object().getClass().getSuperClass() verifies the answer as correct. But can null be considered a class? I see all primitive data types are represented as Class objects from java[dot]sun.com/j2se/1.4.2/docs/api/java/lang/Class.html

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