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• ASP.NET MVC TDD with LINQ and SQL database

  - by dean nolan

  I am trying to start a new MVC project with tests and I thought the best way to go would have 2 databases. 1 for testing against and 1 for when I run the app and use it (also test really as it's not production yet). For the test database I was thinking of putting create table scripts and fill data scripts within the test setup method and then deleting all this in the tear down method. I am going to be using Linq to SQL though and I don't think that will allow me to do this? Will I have to just go the ADO route if I want to do it this way? Or should I just use a mock object and store data as an array or something?. Any tips on best practices? How did Jeff go about doing this for StackOveflow?

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• jquery, Regexp, make dynamic url

  - by Alexander Corotchi

  Hi , I need a regexp help, because for me it will take a lot of time , for you some minutes:) I have youtube a URL : http://www.youtube.com/watch?v=9_Hd8hXhg7o&feature=youtube_gdata I can't add this in embed object , for embed I have to change in this URL : http://www.youtube.com/v/9_Hd8hXhg7o&hl=en_US&fs=1& It means, that I want to add the youtube cod in some variable, something like this var url = after regexp "9_Hd8hXhg7o"; "http://www.youtube.com/v/" + url +"&hl=en_US&fs=1&"; thanks !

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• Help a Python newbie with a Django model inheritance problem

  - by Joshmaker

  I'm working on my first real Django project after years of PHP programming, and I am running into a problem with my models. First, I noticed that I was copying and pasting code between the models, and being a diligent OO programmer I decided to make a parent class that the other models could inherit from: class Common(model.Model): self.name = models.CharField(max_length=255) date_created = models.DateTimeField(auto_now_add=True) date_modified = models.DateTimeField(auto_now=True) def __unicode__(self): return self.name class Meta: abstract=True So far so good. Now all my other models extend "Common" and have names and dates like I want. However, I have a class for "Categories" were the name has to be unique. I assume there should be a relatively simple way for me to access the name attribute from Common and make it unique. However, the different methods I have tried to use have all failed. For example: class Category(Common): def __init__(self, *args, **kwargs): self.name.unique=True Spits up the error "Caught an exception while rendering: 'Category' object has no attribute 'name' Can someone point me in the right direction?

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• How to keep my functions (objects/methods) 'lean and mean'

  - by Michel

  Hi, in all (Agile) articles i read about this: keep your code and functions small and easy to test. How should i do this with the 'controller' or 'coordinator' class? In my situation, i have to import data. In the end i have one object who coordinates this, and i was wondering if there is a way of keeping the coordinator lean(er) and mean(er). My coordinator now does the followling (pseudocode) //Write to the log that the import has started Log.StartImport() //Get the data in Excel sheet format result = new Downloader().GetExcelFile() //Log this step Log.LogStep(result ) //convert the data to intern objects result = new Converter().Convertdata(result); //Log this step Log.LogStep(result ) //write the data result = Repository.SaveData(result); //Log this step Log.LogStep(result ) Imho, this is one of those 'know all' classes or at least one being 'not lean and mean'? Or, am i taking this lean and mean thing to far and is it impossible to program an import without some kind of 'fat' importer/coordinator? Michel

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• Pop-up Window was moved but its image still left behind.

  - by andrew

  Hi, I'm using VS 2005 and .NET framework 2.0 SP2 to build an application with a datagridview in it. I'm using Microsoft Word 11.0 Object Library to do the spelling checker on one of the field in datagridview. When it detected a spelling and grammar window would pop-up open on top of the datagridview. The problem I got was when I moved the pop-up window to the new location, there's still an image of the pop-up window left behind the previous location. The more I moved the more of those copied image would be created on screen. How I can overcome this problem? Thanks in advance, Andrew

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• Verification GetHashCode and Equals

  - by nettguy

  Does the following code show the correct implementation of overriding GetHashCode ? public class Person { public string fName{get;set;} public string lName { get; set; } public int age { get; set; } public override bool Equals(object obj) { Person p = obj as Person; if (p == null) return false; return ( p.GetType()==this.GetType() && p.fName==this.fName &&p.lName==this.lName && p.age==this.age ); } //I took the below code from Marc Gravell's post,I am not sure whether i have implemented it properly public override int GetHashCode() { unchecked { int hash = 13; hash = (hash * 7) + fName.GetHashCode(); hash = (hash * 7) + lName.GetHashCode(); hash = (hash * 7) + age.GetHashCode(); return hash; } } }

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• Applescript access to last.fm app via application icon in menu bar

  - by Mark

  Hi, I want to create an Applescript to drive the last.fm player app. I'm trying to do this via last.fm application icon in the menu bar rather than using the main application menus, as this approach (I think) won't cause last.fm to switch to the foreground. The overall plan is to bind my script to a quicksilver trigger so I can stop|start|skip|love|ban|tag tracks from the keyboard. My problem is I can't find what UI element to bind the applescript to. I've used UI Browser to scan through the UI object model but it draws a blank with the last.fm icon in the menu bar. Any thoughts appreciated.

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• How can I make mock-0.6 return a sequence of values?

  - by Chris R

  I'm using the mock-0.6 library from http://www.voidspace.org.uk/python/mock/mock.html to mock out a framework for testing, and I want to have a mock method return a series of values, each time it's called. Right now, this is what I figured should work: def returnList(items): def sideEffect(*args, **kwargs): for item in items: yield item yield mock.DEFAULT return sideEffect mock = Mock(side_effect=returnList(aListOfValues)) values = mock() log.info("Got %s", values) And the log output is this: subsys: INFO: Got <generator object func at 0x1021db500> So, the side effect is returning the generator, not the next value, which seems wrong. Where am I getting this wrong?

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• Datacontracts property getter running twice

  - by user321426

  I have a set of data contracts that act as wrappers to base classes that we wish to expose. A quick example is: [DataMember] public List<decimal> Points { get { return sourceObject.ListPoints(); } private set{} } We have some other properties that we have to massage the data first (we are converting object graphs and need to guard against circular references). The issue that we are seeing is that this getter will fire twice, once within the service operation, then again during serialization. This is causing two problems: We manually add to collections, since this is running twice the collections are filled with dupes. If an exception is thrown during the second run, it happens outside of the try/catch in the operation, and does not throw a fault. The service throws a cryptic timeout message, and the only way to see the error is via WCF trace logs.

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• pass other value than #VALX and #VALY in postback of series to get value on chart click event

  - by rahularyansharma

  I am using asp.net chart control and i want to use chart click event to get the deptId value of bar click in bar chart . <Series> <asp:Series Name="Tour" ChartType="Column" ChartArea="MainChartArea" PostBackValue="#VALX"> </asp:Series> <asp:Series Name="Inspection" ChartType="Column" ChartArea="MainChartArea" PostBackValue="#VALX"> </asp:Series> <asp:Series Name="NightHalt" ChartType="Column" ChartArea="MainChartArea" PostBackValue="#VALX"> </asp:Series> </Series> I am using department name to show on X axis but i want to capture deptid on chart click event . In above markup i use #VALX in series postback event but its give me deptname in click event protected void AllDepartmentComparisonBarChart_Click(object sender, ImageMapEventArgs e) { e.PostBackValue; }

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• setDelegate:self, how does it work?

  - by fuzzygoat

  I have a query regarding how delegates work. My understanding was that delegates take responsibility for doing certain tasks on behalf of another object. locationManager = [[CLLocationManager alloc] init]; [locationManager setDelegate:self]; [locationManager setDistanceFilter:kCLDistanceFilterNone]; [locationManager setDesiredAccuracy:kCLLocationAccuracyBest]; [locationManager startUpdatingLocation]; Am I right in thinking that in the example code above that the instance of CLLocationManager is created on a new thread so that it can get on with trying to find the location information it needs. When it completes its task (or encounters an error) it calls-back using the appropriate methods located in self e.g. locationManager:didUpdateToLocation:fromLocation: Essentially locationManager sends messages to self (which conforms to the correct delegate protocol) when things happen cheers gary

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• Make a c# / wpf event fire only once?

  - by Donnie

  I have a case where I want a given event to execute once, and only once. I'm trying to do it this way, but I'm having prolems (else I wouldn't be asking). Note that the following code is inside the function that decides that the event needs to be fired. EventHandler h = delegate(Object sender, EventArgs e) { FiringControl.TheEvent -= h; // <-- Error, use of unassigned local variable "h" // Do stuff } FiringControl.TheEvent += h; In general this should work because of the way scope is preserved for delegates until after they're done running, but, since h is in the process of being built when I try to use it it is still considered to be "uninitialized", apparently.

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• Retrieving cached data from existing Crystal Reports file

  - by TimS

  Is there any way to retrieve the cached data from a previously refreshed report and say, dump it to a file? Basically, I'm looking for the dataset that is being used by the report, and hand-dragging each field onto the canvas or even exporting the file doesn't quite get me where I want. I'm not particular to a specific solution, be it .NET, vbscripting or even within the program itself... I'm not overly familiar with the Crystal Report object model, nor .NET, but it seems like with a setting like "EnableSaveDataWithReport", there ought to be a straightforward way. Oh, and I'm on CR 11 Pro

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• GWT Background Study For Project help!

  - by Noor

  Hi, I am currently doing a project on GWT and in the background study, I need to perform a research on GWT. I have included many things which I will list below, Can u point something which I may be missing or what other interesting thing concerning GWT can i include more. The following what is currently included: GWT Java to JavaScript Compiler Deferred Binding JSNI (JavaScript Native Interface) JRE Emulation Library GWT-I18N (Internationalization and Configuration tools) GWT’s XMLParser Widgets and Panels Custom Composite Widget Event and Listeners Styling through CSS GWT History Management GWT Hibernate Integration (through GLead) MVP (Model-View-Presenter) for GWT through Model View Presenter Application Controller and Event Bus Server Calls using RPC and request builder Comet Serialization in GWT JSON (JavaScript Object Notation) Testing Web Application with GWT JUnit Benchmarking Selenium Further work in GWT such as Ext-GWT and smart GWT

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• Boost::Asio : io_service.run() vs poll() or how do I integrate boost::asio in mainloop

  - by user300713

  Hi, I am currently trying to use boost::asio for some simple tcp networking for the first time, and I allready came across something I am not really sure how to deal with. As far as I understand io_service.run() method is basically a loop which runs until there is nothing more left to do, which means it will run until I release my little server object. Since I allready got some sort of mainloop set up, I would rather like tp update the networking loop manually from there just for the sake of simplicity, and I think io_service.poll() would do what I want, sort of like this: void myApplication::update() { myIoService.poll(); //do other stuff } This seems to work, but I am still wondering if there is a drawback from this method since that does not seem to be the common way to deal with boost::asios io services. Is this a valid approach or should I rather use io_service.run() in a non blocking extra thread?

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• An item with the same key has already been added.

  - by senzacionale

  Can someone advice me how to prevent this error. An item with the same key has already been added.? // Failed to find a matching SessionFactory so make a new one. if (sessionFactory == null) { Check.Require(File.Exists(sessionFactoryConfigPath), "The config file at '" + sessionFactoryConfigPath + "' could not be found"); Configuration cfg = new Configuration(); cfg.Configure(sessionFactoryConfigPath); /*MINE*/ var persistenceModel = new PersistenceModel(); persistenceModel.AddMappingsFromAssembly(Assembly.Load("EMedicine.Core")); persistenceModel.Configure(cfg); /*END_OF_MINE*/ // Now that we have our Configuration object, create a new SessionFactory sessionFactory = cfg.BuildSessionFactory(); if (sessionFactory == null) { throw new InvalidOperationException("cfg.BuildSessionFactory() returned null."); } if (sessionFactoryConfigPath != null) sessionFactories.Add(sessionFactoryConfigPath, sessionFactory); } Error is here: sessionFactory = cfg.BuildSessionFactory();

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• Null Pointer Exception on a 2D array (Java)

  - by user315156

  I have a class, "Tetris", in which one of the instance variables is "board". "board" is 2D array of Color objects. Upon the creation of a tetris object I call a method that sets the dimensions of board and then sets all of the Color objects to be the Default value, that is to say, Color.blue. public Tetris(int rows, int cols){ this.rows = rows; this.cols = cols; reset(rows, cols); } public void reset(int rows, int cols){ Color[][] board = new Color[rows][cols]; for(int i = 0; i Unfortunately, when I run the code (which obviously has not been posted in its entirety) I get a null pointer exception on the line: board[i][j] = DEFAULT_COLOR; // Color.blue; //DEFAULT-COLOR. Is there anything obviously wrong with what I am doing? (Sorry if there are glaring format issues, this is my first time on Stack Overflow)

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• undefined reference linker error

  - by klaus-johan

  Hi, I've stuck myself in a c++ project under linux ,for which I get an undefined reference when I try to create an object of a class that I just wrote.I believe this is an linker error caused by the fact that somewhere , somehow I should tell the linker to take into account the new class. I looked at the project properties and at the run command it executes a script (cmake.sh) . Because the project wasn't created by me , and because I'm a novice in working under linux, I just don't know how to direct the linker to do what I expect him to do !

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• Why is the SelectTemplate Method run 2 times in debug mode?

  - by msfanboy

  Hello, debuging this class the SelectTemplate Method is run 2 times, but why? The first time the item is always null. public class PersonDataTemplateSelector : DataTemplateSelector { public override DataTemplate SelectTemplate(object item,DependencyObject container) { if (item is Person) { Person person = item as Person; Window window = Application.Current.MainWindow; if (System.ComponentModel.DesignerProperties.GetIsInDesignMode( window)) return null; if (person.Gender == "male") return window.FindResource("boysViewTemplate") as DataTemplate; else return window.FindResource("girlsViewTemplate") as DataTemplate; } return null; } }

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• serializing JSON files with newlines in Python

  - by user248237

  I am using json and jsonpickle sometimes to serialize objects to files, using the following function: def json_serialize(obj, filename, use_jsonpickle=True): f = open(filename, 'w') if use_jsonpickle: import jsonpickle json_obj = jsonpickle.encode(obj) f.write(json_obj) else: simplejson.dump(obj, f) f.close() The problem is that if I serialize a dictionary for example, using "json_serialize(mydict, myfilename)" then the entire serialization gets put on one line. This means that I can't grep the file for entries to be inspected by hand, like I would a CSV file. Is there a way to make it so each element of an object (e.g. each entry in a dict, or each element in a list) is placed on a separate line in the JSON output file? thanks.

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• retreving long text (CLOB) using CFQuery

  - by CFUser

  I am using CFQuery to retrieve the CLOB field from Oracle DB. If the CLOB filed contains the Data less than ~ 8000, then I can see retrieved the value ( the o/p), however If the value in CLOB field size is more than 8000 chars, then its not retrieving the value. in <cfdump> i can see the query retrieved as 'empty String' though the value exists in Oracle DB. I am using the Oracle Driver in CFadim console enabled 'Enable long text retrieval (CLOB).' and 'Enable binary large object retrieval (BLOB). ' set 'Long Text Buffer (chr)' and 'Blob Buffer(bytes) ' values to 6400000 any suggestions to retrieve the full text?

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• Creating WCF DataContracts dynamically from code

  - by Fredrik Tonn

  Given the fact that I have a fully dynamic object model, that is, I have no concrete classes defined anywhere in code, but I still want to be able to create WCF DataContracts for them so I can use them in operations. How can I achieve this? My concrete class "Entity" implements ICustomTypeDescriptor which is used to present the various properties to the outside world, but my expeimentation with WCF suggests that WCF does not care about ICustomTypeDescriptor. Is this correct or have I missed something? Is this possible? It cannot be so that the only way to create a DataContract is to actually have a concrete harcoded class, can it?

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• Ruby types of collections in ActiveRecord

  - by kmorris511

  If I have an object with a collection of child objects in ActiveRecord, i.e. class Foo < ActiveRecord::Base has_many :bars, ... end and I attempt to run Array's find method against that collection: foo_instance.bars.find { ... } I receive: ActiveRecord::RecordNotFound: Couldn't find Bar without an ID I assume this is because ActiveRecord has hijacked the find method for its own purposes. Now, I can use detect and everything is fine. However to satisfy my own curiousity, I attempted to use metaprogramming to explicitly steal the find method back for one run: unbound_method = [].method('find').unbind unbound_method.bind(foo_instance.bars).call { ... } and I receive this error: TypeError: bind argument must be an instance of Array so clearly Ruby doesn't think foo_instance.bars is an Array and yet: foo_instance.bars.instance_of?(Array) -> true Can anybody help me with an explanation of this and of a way to get around it with metaprogramming?

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• NHibernate IPreUpdateEventListener weird behaviour

  - by mcaaltuntas

  I am using NHibernate 2.0.1 and IPreUpdateEventListener,IPreInsertEventListener events for audit logging purposes. I have a basic entity that has a one to many relation like this. User-------Books From an ASP.NET MVC controller method i am adding a book to a user like this. Book book =new Book("LOTR"); var userBook=user.AddBook(book); After session flushing OnPreInsert event called once for newly created Book object than OnPreUpdate called for all books objects in user's books collection even they have not changed.So I am updating LastMofiedDate property of all books objects and I dont want to do this. Is this supposed behaviour of NHibernate or am I missing something?

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• Error with Dolphin Boonex Community Framework

  - by Yanki Twizzy

  I just finished moving files from my system to my web host and I am getting this error. I have manually changed the permissions of the tmp folder they are referring to but I keep getting the errror. Please could someone tell me what the problem could be Fatal error: Uncaught exception 'Exception' with message 'Please make sure the /home/sunnews/public_html/dolphin/plugins/phpids/IDS/../../../tmp/ folder is writable' in /home/sunnews/public_html/dolphin/plugins/phpids/IDS/Monitor.php:218 Stack trace: #0 /home/sunnews/public_html/dolphin/inc/security.inc.php(51): IDS_Monitor-__construct(Array, Object(IDS_Init)) #1 /home/sunnews/public_html/dolphin/inc/header.inc.php(172): require_once('/home/sunnews/p...') #2 /home/sunnews/public_html/dolphin/index.php(40): require_once('/home/sunnews/p...') #3 {main} thrown in /home/sunnews/public_html/dolphin/plugins/phpids/IDS/Monitor.php on line 218

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