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• Python Eggs on Google App Engine

  - by ott

  Usually I would use virtualenv and pip for deployment of web applications. With Google App Engine this doesn't work, because all import statement are relative to directory of the application. The most common approach I saw was to simply copy the packages from site-packages to the directory of the application. This involves manual work and is error-prone. Another approach was to changes install_lib and install_scripts in ~/.pydisutils.cfg, but this doesn't allow me to use pip in my home directory simultaneously. Do you have any suggestions for this?

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• Any foundation to administrate an Android open source application?

  - by Nicolas Raoul

  Our open source application is quite popular, and we are many developers. The app uses my Android Market account, and I shared the keys with a developer. But if both of us disappear, the application's Market account will be lost, and all users trapped. Giving the keys to all developers is not a solution either, for security reasons. Is there a foundation (like in Mozilla Foundation or Apache Foundation) that could accept to hold our Android Market account and release new versions in accordance with their own guidelines and our community consensus? There are quite a lot of Open Source foundations, but I could not find any that tackles this particular aspect of Android applications.

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• How can I easily run different configurations in Eclipse?

  - by Roman

  I have an Java applications which I would like to run with different values of input parameters (specified in the command line). In "Run - Run Configurations" I have created different configurations corresponding to different values of the input arguments. I can run these configurations in the same way (throw "Run - Run Configurations"). But in these case I have to perform to many actions (clicks) to run a particular configuration. Is there a easier (faster) way to do that? For example I expect that I can do it throw "Run - Run as" but in the drop-dawn menu of the "Run as" I see "(Not Applicable)".

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• Is there a way to remove the source domain from the window title in an out-of-browser Silverlight 3

  - by Jacob

  We may not have the option to migrate over to Silverlight 4 right away, so I was wondering if anyone found a way to remove the source domain name from the window's title for out-of-browser Silverlight 3 applications. Our window title currently looks like this: "My App - localhost." Under Mac, I found the Info.plist file in the application bundle and found where you can set the Bundle name property as well as TrimmedSourceDomain. Unfortunately, when I clear the TrimmedSourceDomain property, the title looks like "My App -," and if I delete the property entirely, the application doesn't launch. I assume similar problems would occur under Windows. Have any of you found a workaround?

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• Writing asynchronously on a stream in cocoa

  - by Richard Ibarra

  Hi folks I have been trying to find any way for writing asynchronously on a stream in Cocoa. I have a set of events in my applications which will try to send data through the socket but i can't be blocked during this transmission due to design terms. I have tried setting a delegate on the output stream and check the event NSStreamEventHasSpaceAvailable but I don't know how this can be combined with the events that put data into the stream. Is there anyway for doing that? I thought using NSThread but I guess there is a better option. Cheers

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• Powerpoint file can be deleted without consequence

  - by John Maloney

  I am working on a license management type application that copies a password protected zip file to the applications root. The user clicks a button "Open Presentation" and the zipped file is extracted into the root folder and then I use the Office interop to open the file in Powerpoint. At this point to my surprise I am able to delete the extracted file that is currently open in the Powerpoint application. I had assumed that trying to delete the file would fail as the file is still open in Powerpoint. Why is it allowing me to delete the file? Is the file somehow copied to a temp folder and then opened in PowerPoint? Can I move forward with the application relying on this ability to delete the file as soon as it is opened in Powerpoint? This would be optimal because it helps insure that the file cannot be copied(I am also using the xml to stop "Save As" and "Save" from appearing int Powerpoint). Thanks for the insight, John

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• Silverlight MVVM example which does not use data grids?

  - by Aim Kai

  I was wondering if anyone knew of a great example of using the MVVC pattern for a Silverlight application that does not utilise a data grid? Most of the examples I have read see links below and books such as Pro WPF and Silverlight MVVM by Gary Hall use a silverlight application with a datagrid. Don't get me wrong, these are all great examples. See also: MVVM: Tutorial from start to finish? http://www.silverlight.net/learn/tutorials/silverlight-4/using-the-mvvm-pattern-in-silverlight-applications/ However some recent demo projects I have been working are not necessarily dealing with data grids but I would still want to implement this pattern..

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• Any AOP support library for Python ?

  - by edomaur

  I am trying to use some AOP in my Python programming, but I do not have any experience of the various libs that exists. So my question is : What AOP support exists for Python, and what are the advantages of the differents libraries between them ? Edit : I've found some, but I don't know how they compare : Aspyct Lightweight AOP for Python Edit2 : In which context will I use this ? I have two applications, written in Python, which have typically methods which compute taxes and other money things. I'd like to be able to write a "skeleton" of a functionnality, and customize it at runtime, for example changing the way local taxes are applied (by country, or state, or city, etc.) without having to overload the full stack.

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• How to manually manage Core Data relationships when deleting

  - by Simon

  I have a Core Data entity, which contains a relationship to another entity. Under certain circumstances, I need to delete the managed objects in the relationship, and at other times no action needs to be taken. I have the Delete Rule on the entity is No Action because of this manual management. The problem I have is, where is the best place to enforce these rules? I cannot see any suitable messages to override on NSManagedObject (something that might notify the object it has been deleted and should clear up its relationships). I would rather not do it higher up in the application logic, because the entity objects can get deleted from array controllers and at different points in the applications, making it necessary to stuff relationship update code at all those levels.

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• Different Providers, different websites, still think I'm logged in on the same website.

  - by Mike

  I have two web applications in the same solution. They both use different membership/profile and role providers. They are named differently. When I run the solution, and visit one website, and login everything is fine. I then go to the other solution and it thinks I am already logged in and the profile provider tries to load profile properties that do not exist. How can I keep them separate, so when I try to log in on one site, it doesn't think I'm still logged in on the other.

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• Need better Java application deployment strategy

  - by Jeff Post

  I have various Java Swing applications that are used by multiple users. My deployment strategy is to locate the .jar file on a network share, and users create shortcuts to that file. When the user launches an application, the file is copied to their machine and executed locally. This method allows for a single copy of the code and easy updating. The problem is that I can't update the file on the network share if any user is using the application at that time. I can't use Web Start because I don't have access to a cert for signing the jar. My current workaround is a separate application that copies the desired app to the user's local machine, launches the application, and then the launcher exits. There is a several second delay from when the launcher app exits and the user's app becomes visible. Can anyone suggest a better deployment method where I can easily update a central copy of the application, one where Windows XP won't maintain a lock on the file?

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• Service Application too visible

  - by Tom

  Working on a service application in Delphi 5 that is intended to run on Windows XP - 7. Most of the application is coming together nicely, but I'm running into one issue. Part of this service application is a form that displays data occasionally (similar to the slider box Avast uses to let you know its updated). When the service shows the form, the form displays on the taskbar, but we don't want it to. Does anyone have any suggestions as to how to hide the form's button on the taksbar? None of the standard methods I've found for regular applications have worked so far. Thanks.

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• What is the best book in client server programming ?

  - by Nayef

  What is the best "new" book in client server programming with C#? I mean principles of inter-network architecture and communication protocols. Open systems and interoperability. Case studies of particular protocols from network layer and above. Socket programming. Remoting. Selected examples of networked client-server applications such as e-mail, news, file-transfer, HTTP. Client-Server Programming Project(s). Using APIs. Software tools and environments.

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• How to build Object Oriented Skills?

  - by cedar715

  Being a core developer for couple of years, coding applications seeing the class diagrams, sequence diagrams, I decided to improve my self, taking the next step of designing. As I'm an OO developer, I'm interested in improving my design skills. For Example, I had a hard time designing a currency converter. My questions to the SO: Is it by experience the design skills can be acquired? Will learning books/blog/material over internet etc help? Is it that one needs the domain knowledge of the application being developed? Knowing Design patterns, principles? Studying 'Code Complete' book ? Need to have Problem-solving skills? In short, given a problem, I just want to solve it in Object-oriented way??

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• .NET WebService Security who can see and use.

  - by user295734

  Trying to firgure out how to test the security of a WebService. Is there some way to search a site for webservices? I have 2 applications one has a webservice and the other a reference to that service. I let visual studio build the reference in the App_WebReferences folder. The webservice works, but i started wondering, can anyone access this service from any website? If so, how can i test this? How do you search a site for webservices? Could I use jQuery/JSON code from a simple site to access a webservice? I guess if it is not secure, how do you secure a webservice?

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• Service Layer Pattern - Could we avoid the service layer on a specific case?

  - by lidermin

  Hi, we are trying to implement an application using the Service Layer Pattern cause our application needs to connect to other multiple applications too, and googling on the web, we found this link of a demonstrative graphic for the "right" way of apply the pattern: martinfowler.com - Service Layer Pattern But now we have a question: what if our system needs to implement some business logic, only for our application (like some maintenance data for the system itself) that we don't need to share with other systems. Based on this graphic: As it seems, it will be unnecesary to implement a service layer just for that; it will be more practical to avoid the service layer, and just go from User Interface to the Business Layer (for example). What should be the right way in this case to implement the Service Layer Pattern? What do you suggest us for a scenario like the one I told you? Thanks in advance.

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• different levels in code igniter?

  - by ajsie

  im all new to framework. so the structure of code igniter looks like: system system/application the system folder is code igniter's base folder right? so if they in the future releases a new version i just put application in the new system folder and its upgraded right? does this mean that i shouldn't put new files and so on in the system folder? cause some code could be used for other applications and i want to put them under the current application im developing, not inside the application folder. i want my application's classes to extend my base system's classes which in turn extend code igniter's base system class. so there are 3 levels. so how could i accomplish this? where to put the system level between CI and my application?

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• LINQ to SQL or Entities, at this point?

  - by orlon

  I'm a bit late to the game and have decided to spend some spare time learning LINQ. As an exercise, I'm going to rewrite a WebForms app in MVC 2 (which is also new to me). I managed to find a few topics regarding LINQ here (http://stackoverflow.com/questions/16322/learning-about-linq, http://stackoverflow.com/questions/8050/beginners-guide-to-linq, http://stackoverflow.com/questions/252683/is-linq-to-sql-doa), which brought the concern of Entities vs SQL to my attention. The threads are all over a year old however, and I can't seem to find any definitive information on which ORM is preferable. Is Entities more or less LINQ to SQL 2.0 at this point? Is it still more difficult to use? Is there any reason to use LINQ to SQL, or should I just jump into Entities? The applications I write at my present employer have a lengthy lifecycle (~10 years), so I'm trying to pick the best technology available.

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• Why people don't use LabView for purposes other than data acquisition and virtualization?

  - by Anzurio

  This is marked as a subjective question, I hope I won't get too many down votes though. LV seems to offer a nice graphic alternative to traditional text based programming. As I understand, it's not a just-virtualization/data acquisition programming language. Nonetheless, it seems to have that paradigm pegged to its creator's name. My question comes up because it doesn't seem to be widely used for multi-purpose applications. I'm not a LV-expert of any kind, I'm more like a learner. I'm still getting used to LV.

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• Have the default security settings changed in Windows 7 that would affect IPrincipal.IsInRole?

  - by adrianbanks

  We use NTLM auth in our application to determine whether a user can perform certain operations. We use the IPrincipal of their current Windows login (in WinForms applications), calling IsInRole to check for specific group memberships. To check that a user is a local administrator on the machine, we use: AppDomain.CurrentDomain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal); ... bool allowed = Thread.CurrentPrincipal.IsInRole(@"Builtin\Administrators") This works if the current user is the Administrator user, or is another user that is a member of the Builtin\Administrators group. In our testing on Windows 7, we have found that this no longer works as expected. The Administrator user still works fine, but any other user that is a member of the Builtin\Administrators group returns false for the IsInRole call. What could be causing this difference? I have a gut feeling that a default setting has changed somewhere (possible in gpedit), but cannot find anything that looks like the culprit.

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• Any "trick" to use some keys to launch an application?

  - by Profete162

  Hello, I am currently developing an free application (TaskOS ) that allow users to have multitasking and switch easily between applications on their mobile ( like alt+tab in Windows ) That work pretty well and user can launch my application by a long press on the "search" button" by adding this line in the manifest: <action android:name="android.intent.action.SEARCH_LONG_PRESS" /> I also succeed to allow to the users to Use the camera button ( they can of course disable that in application settings) and the way to do that is slighlty different: <receiver android:name=".CameraPressed"> <intent-filter android:priority="10000"> <action android:name="android.intent.action.CAMERA_BUTTON"/> </intent-filter> I am now wondering if there are other ways to launch easily my task switcher? ( long press on Home key, long press on trackball, or any other idea.) Reading the Google documentation does not help me a lot. Any other idea/suggestion would be warmly welcome. Christophe

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• Silverlight Unit Testing Framework running tests in external class library

  - by Jonas Follesø

  I'm currently looking into different options for unit testing Silverlight applications. One of the frameworks available is the Silverlight Unit Test Framework from Microsoft (developed primary by Jeff Wilcox, http://www.jeff.wilcox.name/2010/05/sl3-utf-bits/). One of the scenarios I'm looking into is running the same tests on both Silverlight 3 (PC) and Windows Phone 7. The Silverlight Unit Test Framework (SLUT) runs on both PC and phone. To prevent having to copy or link files I would like to put my tests into a shared test library, that can be loaded by either a WP7 application using the SLUT, or a Silverlight 3 application using SLUT. So my question is: will SLUT load unit tests defined in a referenced class library, or only in the executing assembly?

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• Suggestions for VS+Resharper keyboard shortcuts on a Mac

  - by John Miller

  I just upgraded to a Macbook Pro as my development machine but still primarily develop .Net applications with Visual Studio and Resharper (via VMWare Fusion). By far, the biggest obstacle I'm running into is getting used to the keyboard layout change (ex. not being able to do ALT-Insert). Do any of you Windows-on-Mac veterans have any suggestions on how to ease the pain of transitioning (without moving to an external keyboard)? Are you changing mappings via VMWare's keyboard preferences? Or are you using something like AutoHotkey? Any other windows development tips for a Mac newb?

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• Secure database connection. DAL .net architecture best practice

  - by Andrew Florko

  We have several applications that are installed in several departments that interact with database via Intranet. Users tend to use weak passwords or store login/password written on a shits of paper where everybody can see them. I'm worried about login/password leakage & want to minimize consequences. Minimizing database-server attack surface by hiding database-server from Intranet access would be a great idea also. I'm thinking about intermediary data access service method-based security. It seems more flexible than table-based or connection-based database-server one. This approach also allows to hide database-server from public Intranet. What kind of .net technologies and best practices would you suggest? Thank in you in advance!

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• What parallel programming model do you recommend today to take advantage of the manycore processors

  - by Doctor J

  If you were writing a new application from scratch today, and wanted it to scale to all the cores you could throw at it tomorrow, what parallel programming model/system/language/library would you choose? Why? I am particularly interested in answers along these axes: Programmer productivity / ease of use (can mortals successfully use it?) Target application domain (what problems is it (not) good at?) Concurrency style (does it support tasks, pipelines, data parallelism, messages...?) Maintainability / future-proofing (will anybody still be using it in 20 years?) Performance (how does it scale on what kinds of hardware?) I am being deliberately vauge on the nature of the application in anticipation of getting good general answers useful for a variety of applications.

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