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• Testing VSTO Applications?

  - by Matthew Sposato

  I'm developing an Word 2007 VSTO application in VS2008. The part of the application that interacts with VSTO is difficult to test. VSTO objects behave differently than most class libraries. Their state and behaviors depend on how the user is interacting with Word, where they clicked, what's around the insertion point, etc. Mock objects could work in some scenarios, but they don't capture many of the subtleties of the VSTO objects. Anyone have any experience with testing VSTO based application they can share?

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• Multi-statement Table Valued Function vs Inline Table Valued Function

  - by AndyC

  ie: CREATE FUNCTION MyNS.GetUnshippedOrders() RETURNS TABLE AS RETURN SELECT a.SaleId, a.CustomerID, b.Qty FROM Sales.Sales a INNER JOIN Sales.SaleDetail b ON a.SaleId = b.SaleId INNER JOIN Production.Product c ON b.ProductID = c.ProductID WHERE a.ShipDate IS NULL GO versus: CREATE FUNCTION MyNS.GetLastShipped(@CustomerID INT) RETURNS @CustomerOrder TABLE (SaleOrderID INT NOT NULL, CustomerID INT NOT NULL, OrderDate DATETIME NOT NULL, OrderQty INT NOT NULL) AS BEGIN DECLARE @MaxDate DATETIME SELECT @MaxDate = MAX(OrderDate) FROM Sales.SalesOrderHeader WHERE CustomerID = @CustomerID INSERT @CustomerOrder SELECT a.SalesOrderID, a.CustomerID, a.OrderDate, b.OrderQty FROM Sales.SalesOrderHeader a INNER JOIN Sales.SalesOrderHeader b ON a.SalesOrderID = b.SalesOrderID INNER JOIN Production.Product c ON b.ProductID = c.ProductID WHERE a.OrderDate = @MaxDate AND a.CustomerID = @CustomerID RETURN END GO Is there an advantage to using one over the other? Is there certain scenarios when one is better than the other or are the differences purely syntactical? I realise the 2 example queries are doing different things but is there a reason I would write them in that way? Reading about them and the advantages/differences haven't really been explained. Thanks

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• Is there a difference between long-polling and using Comet

  - by Saif Bechan

  I am implementing a system where I need real-time updates. I have been looking at certain scenarios and among all was Comet. Implementing this I do not see any way this is different from traditional long-polling. In both cases you have to send a request, and then the server send a response back. In the browser you interpret the response and then you start a new request. So why should I use comet if in both cases I need to open and close connections.

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• Returning IQueryable or Enumerated Object

  - by Tarik

  Hello everyone, I was wondering about the performance difference between these two scenarios and what could the disadvantages be over each other? First scenario : public class Helper //returns IQueryable { public IQueryable<Customer> CurrentCustomer { get{return new DataContext().Where(t=>t.CustomerId == 1); } } public class SomeClass { public void Main() { Console.WriteLine(new Helper().CurrentCustomer.First().Name; } } The second scenario : public class Helper //returns Enumerated result { public Customer CurrentCustomer { get{return new DataContext().First(t=>t.CustomerId == 1); } } public class SomeClass { public void Main() { Console.WriteLine(new Helper().CurrentCustomer.Name; } } Thanks in advance.

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• Comparing form fields with data base fields and highlighting the form fields

  - by naveen kotla

  Hi, Can you help me in the following two scenarios (PHP+MYSQL) Scenario1: I need to compare the HTML Form field values with the Database field values and highlight the form fields in some color whose values are different from database values before submitting the form (to alert the user). Scenario2: On loading the form, i need to compare the values present in 2 different database tables (tables are having different column names but the information is same). the fields which are not same needs to be highlighted in the html form to indicate the users that the master data is varying from secondary data. Could you help me which is the efficient way of doing this (comparison and highlighting the form values). thanks in advance Naveen

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• Editing Data in Child Window with RIA Services and Silverlight 4

  - by Rick Arthur

  Is it possible to edit data in a SilverLight Child window when using RIA Services and Silverlight 4? It sounds like a simple enough question, but I have not been able to get any combination of scenarios to work. Simply put, I am viewing data in a grid that was populated through a DomainDataSource. Instead of editing the data on the same screen (this is the pattern that ALL of the Microsoft samples seem to use), I want to open a child window, edit the data and return. Surely this is a common design pattern. If anyone knows of a sample out there that uses this pattern, a link would be much appreciated. Thanks, Rick Arthur

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• Catching OutOfMemoryError

  - by dotsid

  Documentation for java.lang.Error says: An Error is a subclass of Throwable that indicates serious problems that a reasonable application should not try to catch But as java.lang.Error is subclass of java.lang.Throwable I can catch this type of throwable. I understand why this is not good idea to catch this sort of exceptions. As far as I understand, if we decide to caught it, the catch handler should not allocate any memory by itself. Otherwise OutOfMemoryError will be thrown again. So, my question is: is there any real word scenarios when catching java.lang.OutOfMemoryError may be a good idea? if we catching java.lang.OutOfMemoryError how can we sure that catch handler doesn't allocate any memory by itself (any tools or best practicies)? Thanks a lot.

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• Can I disable DataAnnotations validation on DefaultModelBinder?

  - by Max Toro

  I want DefaultModelBinder not to perform any validation based on DataAnnotations metadata. I'm already using DataAnnotations with DynamicData for the admin area of my site, and I need a different set of validation rules for the MVC based front-end. I'm decorating my classes with the MetadataType attribute. If I could have different MetadataType classes for the same model but used on different scenarios that would be great. If not I'm fine with just disabling the validation on the DefaultModelBinder, either by setting some property or by creating a specialized version of it.

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• how to find if the machine is 32bit or 64bit

  - by prabodh

  Is there anyway from a C prog to find whether the OS is currently running in 32bit or 64bit mode. I am using a simple program as below int main(void){ switch(sizeof(void*)){ case 4: printf("32\n"); break; case 8: printf("64\n"); break; } } Is this a correct approach ? Would this code work in all the scenarios like, If the hardware is 64bit and the OS is 32bit what would it return ? I don't have machine to test this in diff configurations. Thanks for the advice.

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• How should one import large amounts of data for FIT/Fitnesse tests?

  - by Lachlan

  We have a scheduling engine with large amounts of test data to test all the scenarios, so test automation is critical. We're currently hoping to use FIT/Fitnesse. However a single test has quite a large table of test data, so it doesn't fit very well into the mould of "two or three inputs, one or more outputs" that Fitnesse uses in its examples. Hopefully the other functionality of Fitnesse makes it worth using it. I hear that there is a way to initialize an application for a FIT test with an Excel spreadsheet - not the Spreadsheet to Fitness function, mind you - but I haven't been able to find it so far. Once the whole spreadsheet is loaded into the application, and the application does its thing, we plan to compare either a number of output rows, or perhaps just the last row, to see if the test passes. The application is currently pulling test data from a database for manual tests, but writing to a database, then initializing from it, is not preferred because of the performance impact. The application is written in C#.

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• how to get 12 for joel test working in a small team of 3-4 on php website?

  - by keisimone

  Hi i read this inspired, i am asking for specific help to achieve a 12 for my current project. i am working in a team of 3-4 on a php project that is based on cakephp. i only have a dedicated server running on linux which i intend to have the website live on. and i have a plan with assembla where i am using its svn repository. that's it. i like to hear a major, impactful step towards answering each point raised by the joel test. by impactful i mean doing just this one thing would raise my project to scoring or close to scoring on that area of the joel test. lets begin: 1) do you have a source control system? I am very proud to say learning how to use svn even though we know nuts about branch/release policies made the biggest impact to our programming lives. and the svn repos is on assembla paid plan. Feel free to add if anyone thinks we can do more in this area. 2) Can you make a build in one step? i think the issue is how do i define as a build? i think we are going to define it as if tomorrow my dedicated server crashed and we found another server from another normal hosting provider and all my team's machines all destroyed, how are we going to get the website up again? my code is in svn on assembla. 1 step means as close to 1 button to push as possible. 3)Do you make daily builds? i know nothing about this. please help. i googled and came across this phpundercontrol. but i am not sure if we can get that to work with assembla. are there easier ways? 4)Do you have a bug database? we have not used the assembla features on bug tracking. ashamed to say. i think i will sort this out myself. 5)Do you fix bugs before writing new code? policy issue. i will sort it out myself. 6)Do you have an up-to-date schedule? Working on it. Same as above. estimates have historically been overly optimistic. having spent too much time using all sorts of funny project management tools, i think this time i am going to use just paper and pen. please dont tell me scrum. i need to keep things even simpler than that. 7)Do you have a spec? We do, but its in paper and pen. what would be a good template? 8)Do programmers have quiet working conditions? Well we work at home and in distributed manner. so .. 9)Do you use the best tools money can buy? We use cheap tools. we are not big. 10)Do you have testers? NO testers. Since we have a team of 3, i think i should go get 1 tester. even on a part time basis. so i should get this 1 part time tester test in what manner to extract maximum effects? should i get him to write out the test scenarios and expected outcomes and then test it? or i write the test scenarios and then ask him to do it? we will be writing the test cases ourselves using simpletest. i came across selenium. how useful is that? 11)Do new candidates write code during their interview? Not applicable. But i will do it next time i try to hire anyone else. hires or contractors alike. 12)Do you do hallway usability testing? Will do so on a per month or per milestone basis. i will grab my friends who are not net-savvy. they will be the best testers of this type. Thank you.

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• How to overcome vc++ warning C4003 while writing common code for both gcc and vc++

  - by compbugs

  I have a code that is compiled in both gcc and vc++. The code has a common macro which is called in two scenarios. When we pass some parameters to it. When we don't want to pass any parameters to it. An example of such a code is: #define B(X) A1##X int main() { int B(123), B(); return 0; } The expect output from the pre-processing step of compilation is: int main() { int A1123, A1; return 0; } The output for both gcc and vc++ is as expected, but vc++ gives a warning: warning C4003: not enough actual parameters for macro 'B' How can I remove this warning and yet get the expected output? Thanks.

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• Synchronizing two SQL Server databases using MS Sync Framework

  - by Immortal

  I have one central SQL Server database which can be offline from time to time. I have a desktop application using Local DB Cache (SQL CE) to synchronize with the central database and I also have a web application with its own SQL Server that I'd also would like to keep synchronized. All synchronizations must be bidirectional. Is there a way to synchronize my central database with web application's database in the same way as I synchronize my central database with desktop client? I know about collaboration scenarios and peer-to-peer synchronization but I would like to avoid manual provisioning of databases. I'd like to use integrated sql server 2008 change tracking just like in the SQL CE <-- SQL Server scenario.

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• DTO or Domain Model Object in the View Layer?

  - by smayers81

  I know this is probably an age-old question, but what is the better practice? Using a domain model object throughout all layers of your application, and even binding values directly to them on the JSP (I'm using JSF). Or convert a domain model object into a DTO in the DAO or Service layer and send a lightweight DTO to the presentation layer. I have been told it makes no sense to use DTOs because changes to the database will result in changes to all your DTOs whereas using Model Objects everywhere will just require changes to the affected model object. However, the ease of use and the lightweight nature of DTOs seems to outweigh that. I should note that my app uses Hibernate Model Objects AND uses its own custom-created model objects (meaning not bound to any DB session, always detached). Is either of the above scenarios more beneficial to a strict Model Object pattern? Using Hibernate has been a huge PITA with regards to things like Lazy Initialization Exceptions.

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• Explain Python extensions multithreading

  - by Checkers

  Python interpreter has a Global Interpreter Lock, and it is my understanding that extensions must acquire it in a multi-threaded environment. But Boost.Python HOWTO page says the extension function must release the GIL and reacquire it on exit. I want to resist temptation to guess here, so I would like to know what should be GIL locking patterns in the following scenarios: Extension is called from python (presumably running in a python thread). And extension's background thread calls back into Py_* functions. And a final question is, why the linked document says the GIL should be released and re-acquired?

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• Is generic Money<T_amount> a good idea?

  - by jdk

  I have a Money Type that allows math operations and is sensitive to exchange rates so it will reduce one currency to another if rate is available to calculate in a given currency, rounds by various methods. It has other features that are sensitive to money, but I need to ask if the basic data type used should be made generic in nature. I've realized that the basic data type to hold an amount may differ for financial situations, for example: retail money might be expressed as all cents using int or long where fractions of cents do not matter, decimal is commonly used for its fixed behaviour, sometimes double seems to be used for big finance and large values sometimes a special BigInteger or 3rd-party type is used. I want to know if it would be considered good form to turn Money into Money<T_amount> so it can be used in any one of the above chosen scenarios?

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• NullPointerException in webview.java (android.webkit.WebView$PrivateHandler.handleMessage)

  - by PacificSky

  Every few days I get a crash report for my application with the following stack trace, or small variants thereof (with different line numbers based on different android versions) java.lang.NullPointerException at WebView.java:8241:in `android.webkit.WebView$PrivateHandler.handleMessage' Handler.java:99:in `android.os.Handler.dispatchMessage' Looper.java:150:in `android.os.Looper.loop' ActivityThread.java:4293:in `android.app.ActivityThread.main' Method.java:-2:in `java.lang.reflect.Method.invokeNative' Method.java:507:in `java.lang.reflect.Method.invoke' ZygoteInit.java:849:in `com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run' ZygoteInit.java:607:in `com.android.internal.os.ZygoteInit.main' NativeStart.java:-2:in `dalvik.system.NativeStart.main' This specific stack was on Android 2.3.4 on a HTC EVO 3D PG86100 device. My app does host several webviews for some oAuth-related login scenarios. How should I go about trying to figure out how to fix this? I've tried looking on grepcode to find the source, but I'm unable to find a matching line number that makes sense. Is my Grepcode-fu weak?

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• get the response of a jquery ajax call as an input parameter of another function:

  - by Nauman Bashir

  Hello, Is it possible to make a jquery ajax call, and get the response as an input parameter of another function: here is an example, i have the following function call at a location: updateTips(validationTextObject,objUsers.fetchAvailable()); the objUsers.fetchAvailable() function makes a ajax call to the server. The callback function on successful call would be something like this. It is being used to process the result BHUsers.prototype.recvAvailable= function(response){ // some kind of processing over here return (response["status"] == "OK")? "Available" : "Not Available"; } I want that fuction to return the processed result which can be used as a parameter to the function updateTips The primary goal of this is to be able to do all of this for multiple scenarios, rather than writing multiple functions for the same call. Also i want the calling and the response processing functions to just do what they are doing. I dont want to add html objects into it. Any Clues?

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• Can you hep me with my Perl homework?

  - by riya

  Could someone write simple Perl programs for the following scenarios: convert a list from {1,2,3,4,5,7,9,10,11,12,34} to {1-5,7,9-12,34} to sort a list of negative numbers to insert values to hash array there is a file with content: C1 c2 c3 c4 r1 r2 r3 r4 put it into an hash array where keys = {c1,c2,c3,c4} and values = {r1,r2,r3,r4} There are testcases running each testcase runs as a process and has a process ID. The logs are logged in a logfile process ID appended to each line. Prog to find out if the test case has passed or failed. The program shoud be running till the processes are running and display output.

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• Handling multiple sessions for same user credentials and avoiding new browser window opening in my w

  - by Kabeer

  Hello. I want to handle following scenarios in my new web application. If multiple users log into the application with same credentials, the application should deny access. Since I have out of process session store, I would be able to make out when this situation happens. So I can deny all requests after first successful attempt. This will however not work if the user instead of logging out of the application, closes the browser. The session will continue to reflect in the store for the period of timeout value. If a user attempts to open a new browser windows (Ctrl+N), the application should defeat this attempt. Every new page can potentially fiddle with cookies. I want to therefore deny the users the ability to open new window.

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• Know any unobstrusive, simple GUI guidelines or design recommendations for notifications?

  - by Vinko Vrsalovic

  Hello again. I'm in the process of designing and testing various ideas for an application whose main functionality will be to notify users of occurring events and offer them with a choice of actions for each. The standard choice would be to create a queue of events showing a popup in the taskbar with the events and actions, but I want this tool to be the less intrusive and disrupting as possible. What I'm after is a good book or papers on studies of how to maximize user productivity in these intrinsically disruptive scenarios (in other words, how to achieve the perfect degree of annoying-ness, not too much, not too little). The user is supposedly interested in these events, they subscribe to them and can choose the actions to perform on each. I prefer books and papers, but the usual StackOverflow wisdom is appreciated as well. I'm after things like: Don't use popups, use instead X Show popups at most 3 seconds Show them in the left corner Use color X because it improves readability and disrupts less That is, cognitive aspects of GUI design that would help users in such a scenario.

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• Catching java.lang.OutOfMemoryError

  - by dotsid

  Documentation for java.lang.Error says: An Error is a subclass of Throwable that indicates serious problems that a reasonable application should not try to catch But as java.lang.Error is subclass of java.lang.Throwable I can catch this type of throwable. I understand why this is not good idea to catch this sort of exceptions. As far as I understand, if we decide to caught it, the catch handler should not allocate any memory by itself. Otherwise OutOfMemoryError will be thrown again. So, my question is: is there any real word scenarios when catching java.lang.OutOfMemoryError may be a good idea? if we catching java.lang.OutOfMemoryError how can we sure that catch handler doesn't allocate any memory by itself (any tools or best practicies)? Thanks a lot.

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• Use of IsAssignableFrom and "is" keyword in C#

  - by fearofawhackplanet

  While trying to learn Unity, I keep seeing the following code for overriding GetControllerInstance in MVC: if(!typeof(IController).IsAssignableFrom(controllerType)) { ... } this seems to me a pretty convoluted way of basically writing if(controllerType is IController) { ... } I appreciate there are subtle differences between is and IsAssignableFrom, ie IsAssignableFrom doesn't include cast conversions, but I'm struggling to understand the implication of this difference in practical scenarios. When is it imporantant to choose IsAssignableFrom over is? What difference would it make in the GetControllerExample? if (!typeof(IController).IsAssignableFrom(controllerType)) throw new ArgumentException(...); return _container.Resolve(controllerType) as IController;

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• log in as a proxy for a certain user

  - by Samuel

  We have a requirement, wherein the administrative user needs to proxy in as a certain user in an environment where several users (Role: User) are managed by an administrator (Role: Admin). e.g If we have the following users in the database (admin, user1, user2, user3), we would want the admin to proxy as 'user2' and use the system in certain scenarios. Authentication in our web application is based username / password credentials, what mechanisms are available for the admin to proxy as 'user2' when he doesn't have the password for 'user2'. How can the application track such access for audit purposes to mention that 'admin' had proxied for 'user2' and performed certain actions. I am looking for suggestions on supporting this in our j2ee (jboss seam) web application.

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• Open Source Utilization Questions: How do you lone wold programmers best take advantage of open sour

  - by Funkyeah

  For Clarity: So you come up with an idea for a new program and want to start hacking, but you also happen to be a one-man army. How do you programming dynamos best find and utilize existing open-source software to give you the highest jumping off point possible when diving into your new project? When you do jump in where the shit do you start from? Any imaginary scenarios would be welcome, e.g. a shitty example might be utilizing a open-source database with an open-source IM client as a starting off point to a make a new client where you could tag and store conversations and query those tags at a later time.

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