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• Objective-C Social Networking General Question

  - by ludo

  Hi, I've been developing application for Iphone and now I want to try to create appplication like social bookmarking but I didn't really find any help on the net. I will have a create a login/pass, retrieve data and display them. So I want to know what do I have to use to implement all of that for any social bookmarking website. If you have suggestion, idea, tutorial, you are welcome. thanks,

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• error in C# code

  - by user318068

  hi all . I have a problem with my code in C# . if i click in compiler button , I get the following errors 'System.Collections.Generic.LinkedList' does not contain a definition for 'removeFirst' and no extension method 'removeFirst' accepting a first argument of type 'System.Collections.Generic.LinkedList' could be found (are you missing a using directive or an assembly reference?). and 'System.Collections.Generic.LinkedList' does not contain a definition for 'addLast' and no extension method 'addLast' accepting a first argument of type 'System.Collections.Generic.LinkedList' could be found (are you missing a using directive or an assembly reference?) This is part of a simple program using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Hanoi { public class Sol { public LinkedList<int?> t1 = new LinkedList<int?>(); public LinkedList<int?> t2 =new LinkedList<int?>(); public LinkedList<int?> t3 =new LinkedList<int?>(); public int depth; public LinkedList<Sol> neighbors; public Sol(LinkedList<int?> t1, LinkedList<int?> t2, LinkedList<int?> t3) { this.t1 = t1; this.t2 = t2; this.t3 = t3; neighbors = new LinkedList<Sol>(); } public virtual void getneighbors() { Sol temp = this.copy(); Sol neighbor1 = this.copy(); Sol neighbor2 = this.copy(); Sol neighbor3 = this.copy(); Sol neighbor4 = this.copy(); Sol neighbor5 = this.copy(); Sol neighbor6 = this.copy(); if (temp.t1.Count != 0) { if (neighbor1.t2.Count != 0) { if (neighbor1.t1.First.Value < neighbor1.t2.First.Value) { neighbor1.t2.AddFirst(neighbor1.t1.RemoveFirst()); neighbors.AddLast(neighbor1); } } else { neighbor1.t2.AddFirst(neighbor1.t1.RemoveFirst()); neighbors.AddLast(neighbor1); } if (neighbor2.t3.Count != 0) { if (neighbor2.t1.First.Value < neighbor2.t3.First.Value) { neighbor2.t3.AddFirst(neighbor2.t1.RemoveFirst()); neighbors.AddLast(neighbor2); } } else I hope that you find someone to help me

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• Where in an Eclipse workspace is the list of projects stored?

  - by Kris Pruden

  I use eclipse with "external" projects - i.e. projects created from existing source. Poking around in the workspace files, I cannot find any reference to these projects. My question is: how does eclipse keep track of these projects? I'd like to be able to add such a project to the workspace automatically (by generating .project and .classpath files)..

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• How to get the current exception without having passing the variable?

  - by Pierre-Alain Vigeant

  I am looking for a way to retrieve the current exception without having to pass it as a variable. Suppose the following code public void MakeItFail() { try { throw new FailException(); } catch // Yes I'm aware that this shouldn't be done, but I don't want to go through all the code base and change it { ShowMessage("An error occured"); } } public void ShowMessage(string message) { // How can I retrieve the exception here } In the watch window, I can use $exception to get the current exception. Is there is a code equivalent?

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• When are child views added to Layout/ViewGroup from XML

  - by JohnTube

  My question is : I want to know when does a xLayout (or ViewGroup in general) add a child view from XML ? And by "when" I mean at what point of code, in what "pass" of the "traversal" of the UI toolkit ? Which method of xLayout or ViewGroup should I override ? I have done my homework : I have watched the "Writing Custom Views For Android" presented (by Adam Powell and Romain Guy) in the last Google I/O and I have read Adam Powell comments on this Google+ post.

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• Why does LINQ-to-Entites recognize my custom method?

  - by BlueRaja The Green Unicorn

  This works: (from o in Entities.WorkOrderSet select o) .Where(MyCustomMethod); This does not: (from o in Entities.WorkOrderSet select new { WorkOrder = o }) .Where(o => MyCustomMethod(o.WorkOrder); I understand why the second doesn't work - but why in the world does the first work!? Shouldn't I get a "custom method not recognized?" For reference, here is MyCustomMethod public bool MyCustomMethod(WorkOrder workOrder) { return !workOrder.WorkOrderNum.StartsWith("A", StringComparison.CurrentCultureIgnoreCase); }

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• Problem in using j2me polish with netbeans

  - by learn

  I have downloaded and installed the j2me polish successfully and i have tried to create the project but there is a reference problem showing that the specified folder does not contain the java platform but it is successfully working with normal project instead of polish which LWUIT to use?

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• asp.net mvc user control problem foreach loop

  - by mazhar

  Previous post <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl" % <% MvcApplication1.Models.FeaturesRepository _model = new MvcApplication1.Models.FeaturesRepository(); % <% foreach (var md in _model.GetAllFeatures()) { % <%--<% if (md.int_ParentId == 0) { %--% <%= md.vcr_FeaturesName % <%--<% } %--% <% } % It is with reference to the previous post above.Is there something wrong with the foreach loop(The result is correct but it is displaying the series of Add,Add,Add,Add,Add,Add...,which is the last record of the getallfeatures.

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• Dynamic Comparison Operators in PHP

  - by BenTheDesigner

  Hi All Is it possible, in any way, to pass comparison operators as variables to a function? I am looking at producing some convenience functions, for example (and I know this won't work): function isAnd($var, $value, $operator = '==') { if(isset($var) && $var $operator $value) return true; } if(isAnd(1, 1, '===')) echo 'worked'; Thanks in advance.

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• How do I get results from a link query in the order of IDs that I provide?

  - by Keltex

  I'm looking to get query results back from Linq in the order that I pass IDs to the query. So it would look something like this: var IDs = new int [] { 5, 20, 10 } var items = from mytable in db.MyTable where IDs.Contains(mytable.mytableID) orderby // not sure what to do here select mytable; I'm hoping to get items in the order of IDs (5, 20, 10). (Note this is similar to this question, but I would like to do it in Linq instead of SQL)

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• MVC-like Autogenerated Pages for Webforms

  - by CccTrash

  I noticed that MVC lets you pass in LINQ to SQL objects to its views and it will autogenerate Create, Update and View Pages based on the LINQtoSQL object. Is there anything for webforms that lets you do this kind of thing? (In a nice way with validators maybe?)

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• Can Entity Framework model be passed a SQL script to be run against the database

  - by Greg

  Is it possible to pass a SQL script to some method that Entity Framework has to run it against my model? e.g. equivalent of: context.ExecuteStoreCommand(<tsql script path>); Background: I want a way to reset the database during unit tests, and making a call to run the EF generated TSQL script (from Generate Database from Model) seems one way to achieve this.

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• I Can Not Use Session In Page _Load And I Got Bellow Error

  - by LostLord

  hi my dear friends .... why i got this error : (Object reference not set to an instance of an object.) when i put this code in my page_load.: protected void Page_Load(object sender, EventArgs e) { BackEndUtils.OverallLoader(); string Teststr = Session["Co_ID"].ToString(); } ========================================================================== this session is made when user logins to my web site and this session works in other areas... thanks for your attention

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• Spring annotation mvc - request and response

  - by Eqbal

  I am using annotation based mvc and I am trying to get access to request and response objects using this method declaration in my controller. @RequestMapping(method=RequestMethod.GET) public String checkRequest(Model model, HttpServletRequest request, HttpServletResponse response) But I get an error saying GET method not supported. I need the request and response to pass it to another API call.

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• Eclipse plugin using actionset which will prompt a window for selection,how to do??

  - by Rahul

  *In eclipse plugin using actionSet *Here blue icon for some code(using actionset) ,when i click on that it should prompt a window(some popup) which contains two or more link like web links, when i click 1st link it should perform the 1st action and window should disappear so on...Can anyone help me in this how to do that???* See the picture below for reference ..like this with ok button ok should perform the selected action plz help me to do this...??

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• Tomcat session stickiness in session replication

  - by rabbit

  Hi, I am having a 2 instance load balanced and session replicated tomcat 6.0.20 cluster. Should sticky_session be set to true or false for in memory session replication. http://tomcat.apache.org/connectors-doc/reference/workers.html mentions : Set sticky_session to False when Tomcat is using a Session Manager which can persist session data across multiple instances of Tomcat. where as /tomcat-6.0-doc/cluster-howto.html (Cluster Basics) mentions : Make sure that your loadbalancer is configured for sticky session mode.

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• How can I save and read to XML the new C++ style matrix objects in OpenCV?

  - by neuviemeporte

  The old, C style cvMat matrices could be passed to the cvSave() function for easy writing to an XML file. The new C++ style cv::Mat and cv::Mat_ matrices are not accepted by this function. The OpenCV reference has a section on XML persistence, but the three classes (FileStorage, FileNode and FileNodeIterator) lack any description or example and I can't figure out how to use them from the interface. Thanks.

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• passing arguments to custom filter fn in jquery

  - by Praveen Prasad

  1. jQuery.expr[':'].aFilter = function(elem, index, match){ return true; // Return true/false as per need }; $('div.red').filter(':aFilter').doSomething(); i want pass some custom arguments to "jQuery.expr[':'].aFilter" function, is it possible to do it

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• how to use variable name with image tag

  - by drake

  my controller uses code like this: if params[:commit] == "Submit" this used to work fine when I just had buttons. however, now I am using images as buttons like below: <%= image_submit_tag 'butons/Add-08.png', :class => 'image-button-submit' %> How can I pass the commit variable with value Submit along with this image_submit_tag?

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• Jquery post array via ajax

  - by Dan

  I have an array (for checkboxes) that I need to pass alongside the regular form in an ajax post, but can't seem to get this to work: new_data = [a,b,c,d,e]; somedata_assoc = JQuery.param({'choices[]': new_data}); $.ajax({ type: "POST", url: contract_qurl, data: $(div).find("form").serialize()+"&"+somedata_assoc, context: $(this), success: function(data) { $("#results_table").html(data); } });

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• Problem in implementing through IE8 Accelerator

  - by ShiVik

  Hello all I am trying to create an accelerator in Internet Explorer 8. I have got everything working. The only problem I am having is that when I select a keyword to pass to accelerator function, the spaces in the keyword get converted to "+" plus signs. Does anybody know why this is happening? With Regards Vikram

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• ORM vs SQL XML, very simple middle-tier

  - by synergetic

  I know it is rather heated question. But anyway I'd like to hear opinions of those in Stackoverflow. Given that XML support is quite good in SQL Server 2005/2008, and there's no concern about database independency, why one need Linq-to-SQL, Entity Framework, NHibernate and the likes, which are quite complex and awkward in advanced use-cases, if by using POCOs, XmlSerializer, and stored procedures which process XML, one can achieve a lot less complex middle-tier? For reference, see the link: http://weblogs.asp.net/jezell/archive/2007/04/13/who-needs-orm-i-ve-got-sql-2005.aspx

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• floor of double(time_t)

  - by plok

  I cannot understand why this throws undefined reference to `floor'": double curr_time = (double)time(NULL); return floor(curr_time); Hasn't it been casted to double, which is what floor receives?

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• How can I see the parameters in intellisense in a spark file?

  - by kjm

  Hi, I've got spark intellisense working but when I open the parameters () of the method I can not see what is supposed to go in there and several of the methods have overloads so I can't see what options I have. For example !{Html.Hidden()} once I open the () I can not see what parameters I am to pass any ideas?

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• Understanding Haskell's filter

  - by dmindreader

  I understand that Haskell's filter is a high order function (meaning a function that takes another function as a parameter) that goes through a list checking which element fulfills certain boolean condition. I don't quite understand its definition: filter:: (a->Bool)->[a]->[a] filter p [] = [] filter p (x:y) | p x = x:filter p y | otherwise = filter p y I understand that if I pass an empty list to the function, it would just return an empty list, but how do I read the last two lines?

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