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  • Good C# Interview Questions for a Senior Dev Position

    - by kronoz
    I know there have been a great deal of interview questions posed on SO, however I wondered what sort of questions people here ask at C# interviews, interviewing for a senior developer position. In order to keep this in line with SO principles, please provide a list of questions (or a single question) rather than discussion.

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  • Is it possible to configure a Spring session scoped bean with attributes from the session?

    - by Dave G
    I'm trying to create a service bean that when referenced will be initialized with HttpSession based attributes. Let's say for sake of argument that my webapp would do the following: Establish a session Request login & password When service is requested (it is scope="session" and has init-method="init()") a new instance is created for the session. In the init method, can I reference the HttpSession either through passing it in as a parameter and referencing it by EL? Any ideas on this would be appreciated.

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  • Unit testing Jade

    - by Strawberry
    Hi, What techniques and design strategies have people used to aid in unit testing Jade applications? In particular, how do people typically go about testing Behaviours - which are tightly coupled to the Agent instance and the Jade environment? I'm aware of the JadeMX project, but this appears to be geared more towards system testing - in particular the message exchange between collaborating agents. Thanks.

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  • What is holding up HD video conferencing on the web?

    - by Tristan
    What exactly is holding up real-time HD video conferencing on the web? Live, low-latency, video has lots of great applications beyond video chat: for instance, virtual desktops / vnc, remote control of applications, and server-side visualization. So what exactly are the technical barriers that remain? Existing video and remote desktop applications show latency problems are overrated for many applications. Bandwidth for many users now can easily stream 720p and even 1080p. Top-end video conferencing demos already do 1080p

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  • How are DynamicResources built and their use in contextmenus.

    - by miguel
    Are dynamic resources truly dynamic? If I define a DynamicResource, I realise that an expression is created (where?) that is not translated into a resource until runtime, however, What I do not understans is whether this dynamicresouce, once built, is now "Static" For instance, if I create a context menu via a dynamicresource, are the menuitems which are created at runtime on access then static, even if they are bound? If so, how can i create a dynamic context menu in XAML?

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  • Integrate website backend with forum software?

    - by Msencenb
    I am designing a php/mysql website that will have a members are and a separate "forum" section. Should I just use the forum software as my "login/registration"? If this is the case should I go with VBulletin, Invision, phpBB3 or something different? Or should I roll my own single sign on hack? Or something completely different?

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  • Silverlight file download for COM Interop

    - by rip
    Is the following possible in Silverlight when a button is clicked? An Excel template is downloaded from a remote server and saved to the local machine An instance of the template is then opened on the client A macro is then executed within the new Excel document I can do everything apart from saving the template to the local machine. I can save this in isolated storage but then I don’t know where this is when trying to open it from the Excel COM interop code. Has anyone any ideas or is this not possible?

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  • Maximum number of concurrent users connected to SQL Server 2008

    - by worlds-apart89
    Is there a limit to the maximum number of concurrent users connected to SQL Server 2008? I am guessing computer resources determine that limit (if it exists), but I am also wondering if there is a theoretical limit. I have tried googling the answer, but all the information I have found is based upon earlier versions of SQL Server. If there is a limit, does it apply to just a database or a SQL Server instance?

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  • Python double underscore mangling

    - by gnr
    I am a bit confused by this behavior (using python 3.2): class Bar: pass class Foo: def __init__(self): self.__cache = None bar = Bar() bar.__cache = None foo = Foo() print(vars(bar)) #returns {'__cache': None} print(vars(foo)) #returns {'_Foo__cache': None} I've read up a bit on how double-underscores cause attribute names to be "mangled", but I would have expected the same name-mangling in both cases above. The meaning of a single- and a double-underscore before an object name in Python Any ideas what's going on here?

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  • Java Google App Engine Datastore: 'IN' operator available on JDO query filters, as with Python?

    - by Jim Blackler
    This page describes an 'IN' operator that can be used in GAE Datastore to compare a field against a list of possible matches, not just a single value: However this is for Python. In Java (App Engine 1.2.5), trying query.setFilter("someField IN param"); on my javax.jdo.query fires a JDOUserException 'Portion of expression could not be parsed: IN param'. Is there a way this can be done?

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  • question about that concept of linux install in flash card.

    - by Johnny
    1.i can't understand why Linux on flash card need install, does it simply copy certain file to certain location in flash card? ---i mean ,plan it in a response file,then one program read the plan in response file and write certain format to flash card. 2.does the file system bind tiedly to the linux kernel? is it possible let each kernel,user,app have its own root? rather than mount everything under one single / "root"

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  • Erlang-style light-weight processes in .NET

    - by alexey
    Is there any way to implement Erlang-style light-weight processes in .NET? I found some projects that implement Erlang messaging model (actors model). For example, Axum. But I found nothing about light-weight processes implementation. I mean multiple processes that run in a context of a single OS-thread or OS-process.

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  • Web application

    - by Baz
    hi guys, its my first web application in real world and am very much confuse from the beginning am working on Merchandise suppliers application, which includes various type of products. for an instance Home products cloths men t-shirts add basket send information to my client, I don’t need to add PayPal , just need to send information to my client , So far I have done , analysis , site structure , page designing am confuse about database designing Can any one help me out or send me some example step by step how should I begin with it .

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  • Host a project on Github and Google Code

    - by Abhi Beckert
    Is it possible to have a project hosted on Github and google code? I've been using Google Code for years, and recently started playing with GitHub. I like GitHub a lot, but there's also a long list of Google Code features I really miss. Is it possible/feasible to host a single project on both? Can I use github as the primary repository for my source, but have all revisions automatically sent over to a git repository on Google Code?

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  • Redundant margins when adding ImageView to ScrollView in Android.

    - by Shmuel Meymann
    Hi.. I have been trying to use a ScrollView on a single ImageView with a JPG (~770 x 1024) over an AVD that's 600x800. My main.xml is: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <ScrollView android:id="@+id/scroller" android:layout_width="fill_parent" android:layout_height="wrap_content" /> </LinearLayout> Now, I add a single ImageView with setContentView(R.layout.main); ScrollView sv = (ScrollView)findViewById( R.id.scroller ); ImageView iv = new ImageView(this); iv.setImageDrawable( new BitmapDrawable( "/sdcard/770x1024.jpg" ) ); // same happens with ScaleDrawable. iv.setScaleType( ScaleType.CENTER_INSIDE ); sv.addView( sv ); // and it does not go any better if I use Linear Layout between the ScrollView and the ImageView. The result is The image was displayed in a middle of a ScrollView, wrapped with background area on top and bottom as following: ##### ##### image . . . ##### ##### Where ##### stands for background area I tried to set the background of the ImageView red, and it verified that the blank margins were ImageView background. iv.setBackgroundColor( color.Red ); Where I would expect the image to take no more than its size (scaled to the AVD size) and I expect the ScrollView to let me scroll over the remainder (if any). For some reason, I see that the drawable size is 600x1024. Moreover I tried to add a LinearLayout with a dummy text view such as the linear layout is a parent to the ImageView and the TextView, and the ScrollView is a parent to the LinearLayout. LinearLayout dummy = new LinearLayout( this ); dummy.addView(iv); TextView someTextView = new TextView( this ); someTextView.setLayoutParams(new LayoutParams( LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT )); dummy.addView( someTextView ); sv.addView( dummy ); The result was very peculiar: The entire layout was set into the width of a text-less text view (19). It is important for me to avoid stretching the image. What is the recommended way to implement a display of a page that can be potentially scrolled? Do I have to do it manually with a plain layout and scrolling upon OnMove events? Thanks Shmuel

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  • Trying to manually recreate a simple generate/scaffolding script

    - by montooner
    I'm trying to understand Rails from the ground up. I want to learn how to manually create basic show-all/show-single/CRUD functionality in the framework. I currently am working on the display-all functionality, but am stopped by an error when I try to request all items in the Products db Here are the steps I've taken so far: script/generate controller Products script/generate model Products rake db:migrate modified products_controller.rb to add: def index() { @products = Product.all} (error: uninitialized constant ProductsController::Product) ideally, dump all orders in the view What's the fix?

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  • LINQ to SQL Could not find key member. Only fails on server.

    - by Adam Carr
    I have a scenario where I am inheriting from an abstract class in my partial linq to sql auto generated class implementation. My base abstract class has an abstract property called ID which I have flagged inside my LINQ to SQL model with the instance modifier override. This works fine locally without any issues. I have also done some development on another machine and it works fine there too (both in VS2008 and using Subversion). I am running CI with TeamCity and the build succeeds and deploys as desired. The problem is when the server tries to hit the database for the first time via the LINQ to SQL data context, it generates the following error. "Could not find key member 'Id' of key 'Id' on type 'CustomType'. The key may be wrong or the field or property on 'CustomType' has changed names." I have tried changing my configuration by not implementing the Id field in my base class but this still fails. Why does it work on both of my DEV machines but not on the server? I am using LINQ to SQL in another project that runs on this server just fine. FYI: LINQ to SQL, SQL 2008, .NET 3.5, SERVER 2008, IIS 7.0 UPDATE I have gone back and added the same table a second time in the same data model but without a base class and have then displayed the results from that table and got no errors. This tells me it has something to do with my base abstract class and the need to flag a property on one of my linq to sql model classes (that belongs to a key relationship) with the instance modifier of override. No answer to this yet but am getting closer. UPDATE I have fixed my issue by simply changing my approach to my problem but I am still interested in why this doesn't work. I created a new WinSrv2008 VPC and patched it, deployed a pre-built version of my site to it and still got the same error. I now assume the issue is like what the person said here, a dependency issue with VS2008. My question is what or what? Will install VS2008 on the VPC to see if it works after that.

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