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• C# Winforms vs WPF

  - by m0s

  Hi pros, I am a student and I do freelance here and there when I have opportunity. I believe my strongest language is C#. I don't really know what is going on in real programming world, so I was wondering if WPF did take over WinForms? I know the differences between two and how two can be used simultaneously but, I just don't want to invest my time in learning dying technologies, I hope you understand. So, for windows desktop programming what would you recommend to master WinForms, WPF or maybe both? I also get a lot that desktop programming is dead already and one should only care about learning web programming. Thanks for attention, any comments are greatly appreciated.

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• Private members when extending a class using ExtJS

  - by Protron

  I have done some research on the ExtJS forum regarding private methods and fields inside a extended class, and I couldn't find any real answer to this. And when I say an extended class I mean something like this: Ext.ux.MyExtendedClass = Ext.extend(Ext.util.Observable, { publicVar1: 'Variable visible from outside this class', constructor: function(config) { this.addEvents("fired"); this.listeners = config.listeners; }, // to show that I need to use the base class publicMethod1: function() { return 'Method which can be called form everywhere'; }, publicMethod2: function() { return this.publicMethod1() + ' and ' + this.publicVar1; } // to show how to access the members from inside another member }); The problem here is that everything is public. So, how do I add a new variable o method within the scope of MyExtendedClass that cannot be accessed from outside but can be access by the public methods?

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• win32 API vs Linux Kernel API

  - by Nik

  Is there anything that can be done using Win32 API that cannot be done using Linux kernel API. I'm asking this, because back in Lab where I work we use Ixia and Agilent Technologies H/W. and these H/W (Signal processes or Packet generator) worth 10s of thousand of Dollars run windows as their OS. Why didn't they choose Linux. I've seen Linux in routers and firewall but not in real Heavy duty H/W like Ixia. This preference of windows over Linux made me think is there any limitation in Linux API or its just licensing thing.

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• Where can I find Object Model Documentation for Microsoft Expression Web Add-ins

  - by JonStonecash

  I am working on an add-in for Microsoft Expression Web. I have gotten enough information on the web to know that I have to add references to Microsoft.Expression.Interop.WebDesigner, Microsoft.Expression.Interop.WebDesignerPage, and Microsoft.Expression.Interop.WebDesigner. The problem is that there does not seem to be any official documentation on the classes within these dll-s. There is even a Microsoft Connect issue about the lack of documentation. I have been using the object browser in Visual Studio 2008 and Reflector but that is pretty thin soup. Does anyone know where there is some reasonable documentation. I am not looking for a sample "hello world" implementation. I want some more substance and depth.

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• Can I use a MIME type declaration to get an HTML file to open in MS Word?

  - by Toph

  Bill James wrote: I was able to render an HTML page with the MIME type set to "application/msword", which caused the browser to spawn Word which imported the html just fine, allowing edits and saving just as if I'd output a real Word doc. That sounds great to me, but I haven't been able to get it to work in any browser (Chrome/FF/Safari/Opera/IE on Win7 running Word 2010 beta). I tried changing the MIME type in the HTTP headers of several pages via Tamper Data to application/msword, and I tried using the http-equiv meta tag <meta http-equiv="Content-type" content="application/msword"> on a local HTML file I tried opening from the browser, but neither appeared to have any effect. I don't really have a clue with regard to HTTP headers and MIME types generally, so - any tips? Many thanks!

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• How to run the servlet program in netbeans IDE?

  - by Venkats

  I am new to java servlets. I learning from the basic. I have a simple servlet program, but i don't know how to run it. import java.io.*; import javax.servlet.*; import javax.servlet.http.*; public class HelloWorld extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { PrintWriter out = response.getWriter(); out.println("Hello World"); } } How can run the above program in netbeans. I am using the netbeans6.8. Whats are the procedures which i have to follow? Thanks in Advance.

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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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• Repository pattern - Switch out the database and switch in XML files

  - by glasto red

  Repository pattern - Switch out the database and switch in XML files. Hello I have an asp.net MVC 2.0 project and I have followed the Repository pattern. Periodically, I am losing access to the database server so I want to have another mechanism in place (XML files) to continue developing. It is not possible to have a local version of the db unfortunately! I thought this would be relatively easy using the Repository pattern, to switch out the db repositories and switch in XML versions. However, I am having real trouble coming up with a solution. I have tried LinqToXML but then ran into problems trying to return a List of News items as the LinqToXML ToList returns Generic.List Should I be mapping the XElement list over to the News list by hand? It just seems a bit clunky compared to LinqToSQL attributes on the News class and then simply doing a Table.....ToList(); Any direction would be appreciated. Thanks

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• Delphi 2010 Datasnap - Design Query

  - by Matt

  I am investigating moving a thick client SQL based Delphi application to Multi Tier thin clients, and have been looking at using Datasnap in Delphi 2010. I have worked through the White Paper written by Bob Swart and extended this further. My main question really is that I want to make the server side efficient in terms of connections and SQL Queries due to multiple queries being run and remaining open at the same time to interrogate data, can anyone point me in a direction for guidance on how to design a real world Datasnap Server application, as the demo's don't go into enough detail. Thanks Matt

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• New Facebook FQL table vs. Grap API

  - by PanosJee

  Hello everyone I just read the new User fql table fields at http://developers.facebook.com/docs/reference/fql/user As I can see a lot of the fields have been deprecated such as work_history or books and movies. It is quite essential for my app to get all those fields for my user's friends in a single fql query. If i am not wrong the only way to do this is to get those extra fields using the Graph API by requesting them seperately for every friend of my user. Is there any way to do it in a more efficient way without so many calls? Can I subscribe to real time updates for the request fields for my user's friends (i do not care about the logged in user data)? Thank you a lot

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• Experience using Yii framework for actual PHP project

  - by desireco

  I've been using Code Igniter for my PHP projects, when I start them from the beginning. It is very nice framework, saves me a lot of work and let me have low level access if I need to do something special. Code Igniter is also faster then similar frameworks by order of magnitude. I came across Yii framework which claims to be even faster and easier and prettier and whatever. I never heard of it and I was wondering if someone used it in some real life project and have practical experience that he is willing to share.

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• 10013 error (AccessDenied) on Silverlight Socet application

  - by Samvel Siradeghyan

  I am writing silverlight 3 application which is working on network. It works like client-server application. There is WinForm application for server and silverlight application for client. I use TcpListener on server and connect from client to it with Socket. In local network it works fine, but when I try to use it from internet it don't connect to server. I use IP address on local network and real IP with port number for internet version. I get error 10013 AccessDenied. Port number is correct and access policy exist. Firewall is turned of. Where is the problem? Thanks.

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• asp.net mvc controller actions testing

  - by Imran

  I was just wondering how others are going about testing controller actions in asp.net mvc? Most of my dependencies are injected in to my controllers so there is a not a huge amount of logic in the action methods but there may be some conditional logic for example which I think is unavoidable. In the past I have written tests for these action methods, mocked the dependencies and tested the results. I have found this is very brittle and a real PITA to maintain. Having 'Expect' and 'Stub' methods everywhere breaks very easily but I don't see any other way of testing controller actions. I actually think it might be easier to test some of these manually! Anyone have any suggestions? Perhaps I am missing something here? Thanks Imran

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• Why is IoC / DI not common in Python?

  - by tux21b

  In Java IoC / DI is a very common practice which is extensively used in web applications, nearly all available frameworks and Java EE. On the other hand, there are also lots of big Python web applications, but beside of Zope (which I've heard should be really horrible to code) IoC doesn't seem to be very common in the Python world. (Please name some examples if you think that I'm wrong). There are of course several clones of popular Java IoC frameworks available for Python, springpython for example. But none of them seems to get used practically. At least, I've never stumpled upon a Django or sqlalchemy+<insert your favorite wsgi toolkit here> based web application which uses something like that. In my opinion IoC has reasonable advantages and would make it easy to replace the django-default-user-model for example, but extensive usage of interface classes and IoC in Python looks a bit odd and not »pythonic«. But maybe someone has a better explanation, why IoC isn't widely used in Python.

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• Code editor skins?

  - by Khalspi

  This is a kind of unorthodox question. Frankly, I won't lie to you. I am new to programming and am planning to improve myself. I enjoy coding but I need something to keep me going during the down times, so my question is: Is there such a thing as a code editor skin? A compiler skin? For example, you have the Command Prompt, it has a black background with white writing, it seems geeky, exactly what I want. I want a compiler that looks like command prompt...black with white writing (or green) or still has color coding (some compilers change color of text based on command). Yes, this is mainly for boasting, but I don't want to show someone something that basically looks like a text editor, I just want something that looks a little cooler. P.S (This question may seem a little unnecessary, it is because it is my first question, I'd like to warm up to this community before I start asking some real questions about code.)

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• WPF assign Z-Order of owned windows without changing focus.

  - by Kamiikoneko

  Hi, Due to OpenGL airspace issues I have several windows that are owned by the main window but look and act like controls. I also have some data readout/sort windows that show real-time data and need to be normal floating windows, also owned by the main window so that they remain floating above the main window even while operations are performed in the main window. The issue: I open a data readout window (normal window) and am watching data change. Then I click on a text box to enter a value in one of the windows that acts as a control due to airspace issues, and it becomes activated, covering up my data readout window. This is bad because the airspace window is supposed to act like it is part of the main window. I tried some tricks with Activation and Deactivation, and it looks ok but then editing the airspace window at all is impossible because WPF only lets me edit the activated window. How can I ask that normal data readout window to please stay above all other windows owned by the main window, but still let other windows receive focus?

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• Spring Web MVC: Use same request mapping for request parameter and path variable

  - by ngeek

  Good people: is there a way to express that my Spring Web MVC controller method should be matched either by a request handing in a ID as part of the URI path ... @RequestMapping(method=RequestMethod.GET, value="campaigns/{id}") public String getCampaignDetails(Model model, @PathVariable("id") Long id) { ... or if the client sends in the ID as a HTTP request parameter in the style ... @RequestMapping(method=RequestMethod.GET, value="campaigns") public String getCampaignDetails(Model model, @RequestParam("id") Long id) { This seems to me a quite common real-world URL scheme where I don't want to add duplicate code, but I wasn't able to find an answer yet. Any advice highly welcome.

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• Python Comet Server

  - by HenryL

  I am building a web application that has a real-time feed (similar to Facebook's newsfeed) that I want to update via a long-polling mechanism. I understand that with Python, my choices are pretty much to either use Stackless (building from their Comet wsgi example) or Cometd + Twisted. Unfortunately there is very little documentation regarding these options and I cannot find good information online about production scale users of comet on Python. Has anyone successfully implemented comet on Python in a production system? How did you go about doing it and where can I find resources to implement my own?

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• Convert binary information to regular data type without outside modules in python.

  - by vgm64

  Hello World. I'm tasked with reading a poorly formatted binary file and taking in the variables. Although I need to do it in C++ (ROOT, specifically), I've decided to do it in python because python makes sense to me, but my plan is to get it working in python and then tackle re-writing in in C++, so using easy to use python modules won't get me too far later down the road. Basically, I do this: In [5]: some_value Out[5]: '\x00I' In [6]: ''.join([str(ord(i)) for i in some_value]) Out[6]: '073' In [7]: int(''.join([str(ord(i)) for i in some_value])) Out[7]: 73 And I know there has to be a better way. What do you think?

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• When to use Shift operators << >> in C# ?

  - by Junior Mayhé

  I was studying shift operators in C#, trying to find out when to use them in my code. I found an answer but for Java, you could: a) Make faster integer multiplication and division operations: *4839534 * 4* can be done like this: 4839534 << 2 or 543894 / 2 can be done like this: 543894 1 Shift operations much more faster than multiplication for most of processors. b) Reassembling byte streams to int values c) For accelerating operations with graphics since Red, Green and Blue colors coded by separate bytes. d) Packing small numbers into one single long... For b, c and d I can't imagine here a real sample. Does anyone know if we can accomplish all these items in C#? Is there more practical use for shift operators in C#?

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• Embedding ASPX in ASP page

  - by KB22

  Hi all, I have an ASPX based component which I'd need to inlude into a plain ASP based script. Scenario is, that I'm working within an LMS system (Angel to be exact) and I wan't to create a new nugget within that framework. An Angel nugget is pretty much what a portlet is in the Java world. Now, the nugget spec. states that my starting point has to be a file called default.asp. What I'd like to do is: read relevant data from ASP session pass data to ASPX component have ASPX do it's job and display the results My problem is that I fail to run / display my ASPX component without using an iframe, which I want to avoid since that crushes the layout / design of my nugget. Is there a way to get this done properly or do I have to rewrite my component in ASP to get this going? Note: the component performs web service queries and such and I'd like to avoid rewriting that. thanks for your thoughts! K

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• Am i passing values or adresses? [Java]

  - by Samuel

  Hello World, I am new to java and i was asking myself, if i have a class 'Example' and somewhere i make a: Example example1 = new Example(); and i add some stuff to it, lets say example1.setExampleBoolean(false); and now i make: Example example2 = example1; example2.setExampleBoolean(true); Did i say with Example example2 = example1 let example2 point to the same adress as example1? Because than i would have altered example1. In other words would, using something like: Boolean exampleBoolean = example1.getExampleBoolean(); exampleBoolean be true of false? Might be a stupid questions but for me it would change the way i'd handle problems in my programs :) Thanks in advance -Samuel

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• Error URL redirection

  - by xRobot

  urls.py: url(r'^book/(?P<booktitle>[\w\._-]+)/(?P<bookeditor>[\w\._-]+)/(?P<bookpages>[\w\._-]+)/(?P<bookid>[\d\._-]+)/$', 'book.views.book', name="book"), views.py: def book(request, booktitle, bookeditor, bookpages, bookid, template_name="book.html"): book = get_object_or_404(book, pk=bookid) if booktitle != book.book_title : redirect_to = "/book/%s/%s/%s/%s/%i/" % ( booktitle, bookeditor, bookpages, bookid, ) return HttpResponseRedirect(redirect_to) return render_to_response(template_name, { 'book': book, },) . So the urls of each book are like this: example.com/book/the-bible/gesu-crist/938/12/ I want that if there is an error in the url, then I get redirected to the real url by using book.id in the end of the url. For example if I go to: example.com/book/A-bible/gesu-crist/938/12/ the I will get redirected to: example.com/book/the-bible/gesu-crist/938/12/ but I go to wrong url I will get this error: TypeError at /book/A-bible/gesu-crist/938/12/ %d format: a number is required, not unicode . Why ? What I have to do ?

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• Problem with TcpListener on Silverlight application

  - by Samvel Siradeghyan

  I am writing silverlight 3 application wich si working on network. It works like client-server application. There is WinForm application for server and silverlight application for client. I use TcpListener on server and connect from client to it with Socet. In local network it works fine, but when I try to use it from internet it don't connect to server. I use IP address on local network and real IP with port number for internet version. Where is the problem? Thanks.

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• How do web crawlers affect site statistics?

  - by LM

  What are ways in which web crawlers (both from search engines and non-search engines) could affect site statistics (e.g., when doing AB-testing different page variations)? And what are ways to take care of these problems? For example: Do a lot of people writing web crawlers often delete their cookies and mask their IPs, so that web crawlers often show up as different users each time they crawl the site? What are heuristics to use to recognize that something is a bot? (I'm guessing any sophisticated enough bot can be indistinguishable from a real user, if it wants to -- is this correct?)

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