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• Switching to Linux for Windows development, bad idea?

  - by krebstar

  I was contemplating switching to Linux for C++ development, coming from a Windows environment. Is this a bad idea? My workplace uses Windows and Visual Studio for our projects (some C# and java too, but right now I'm only developing in C++). If they decide to put me on a C# project, would development still possible (mono?)? What are the difficulties in this sort of transition? Would I have a problem working on their projects and vice versa? I read somewhere that there'd be problems with precompiled headers and such (we do use them), and encodings (tabs/spaces, line endings, etc).. If it's not too hard to do this switch, how do I get started? IDE? vim+make? Thanks. By the way, we make MOSTLY windows software.. EDIT: Thanks guys, I guess that makes sense..

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• Are there macro facility for Java or C#?

  - by h2g2java

  Macros are useful. Therefore, I occasionally bemoan the absence of macros in Java and C#. Macros allow me to force in-line but allow me the code-manageability of non-macro code. Is there any Java- or C#-based project/product somewhere out there that effectively allow macros or specifying in-line expansion. I am thinking of something like @macro public void hello(int x){ ... } or when I call a method, an @inline annotation preceding the call would effect the called-method to be in-lined. or, should I need to know that I should just trust the compiler to make the best the decision for me that at the best of its analysis it might in-line a call. I hope this question will not lead to debating the pro/cons/usefulness of macros.

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• Google App Engine and Git best practices

  - by systempuntoout

  I'm developing a small pet project on Google App Engine and i would like to keep code under source control using github; this will allow a friend of mine to checkout and modify the sources. I just have a directory with all sources (call it PetProject) and Google App Engine development server points to that directory. Is it correct to create a repo directly from PetProject directory or is it preferable to create a second directory mirroring the develop PetProject directory? In the latter case, anytime my friend will release something new, i need to pull fetch from Git copying the modified files to the develop PetProject directory. If i decide to keep the repo inside the develop directory, skipping .git on Gae yaml is enough? What are the best practices here?

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• TreeView nodes always have .Checked=true on postback even when not checked in UI

  - by GISmatters

  I have a treeview in my .aspx: <asp:TreeView ID="tvDocCatAndType" runat="server" /> Not much else going on in the page -- two <asp:LinkButtons> and one <asp:Label>; the page is a child of a master page, so these controls are within a <asp:Content> control. I populate the treeview in code -- just 3 node levels, including the root node. All nodes have checkboxes, and I initialize all node.Checked to true. I have some Javascript to do the usual check/uncheck up and down the tree as parent and child node checkboxes are toggled. No matter how many checkboxes I clear in the UI, on postback every single node has node.Checked = true regardless of the state of the checkbox in the UI. This is not the first time I've used a treeview, but I've never had this problem before. I created this page by light adaptation of an earlier project that works fine. Thanks in advance for any helpful comments or questions, Chris

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• C++: How to build an events / messaging system without void pointers?

  - by Jarx

  I'd like to have a dynamic messaging system in my C++ project, one where there is a fixed list of existing events, events can be triggered anywhere during runtime, and where you can subscribe callback functions to certain events. There should be an option for arguments passed around in those events. For example, one event might not need any arguments (EVENT_EXIT), and some may need multiple ones (EVENT_PLAYER_CHAT: Player object pointer, String with message) The first option for making this possible is allowing to pass a void pointer as argument to the event manager when triggering an event, and receiving it in the callback function. Although: I was told that void pointers are unsafe and I shouldn't use them. How can I keep (semi) dynamic argument types and counts for my events whilst not using void pointers?

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• Consuming a USB HID device in Windows CE 6.0 using c#

  - by kersny

  I am working on an Embedded Windows CE project and am interested in accessing a USB HID device through one of its USB Host ports. All I really need to read are the raw HID spec packets. On a windows computer, I have a working program using hid.dll, but as far as I have researched, there is no equivalent on CE. I know there is the usbhid.dll, but I'm not sure if it is applicable for this situation. I would prefer not to write a kernel level driver, as I would like to do my coding in c#. Has anyone had experience consuming an HID device on Windows CE?

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• Retrieve binary data from S3 storage through AWS.NET in C#

  - by BerggreenDK

  I've tested most of the included samples in the AWS SDK for .NET and they all works fine. I can PUT objects, LIST objects and DELETE objects in a bucket, but... lets say I delete the original and want to sync those files missing locally? I would like to make a GET object (by key/name and bucket ofcause). I can find the object, but how do I read the binary data from S3 through the API? Do I have to write my own SOAP wrapper for this or is there some kinda sample for this out "here" ? :o) In hope of a sample. It does not have to tollerate execeptions etc. I just need to see the main parts that connects, retreives and stores the file back on my ASP.net or C# project. Anyone???

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• What happens to date-times and booleans when using DbLinq with SQLite?

  - by DanM

  I've been thinking about using SQLite for my next project, but I'm concerned that it seems to lack proper datetime and bit data types. If I use DbLinq (or some other ORM) to generate C# classes, will the data types of the properties be "dumbed down"? Will date-time data be placed in properties of type string or double? Will boolean data be placed in properties of type int? If yes, what are the implications? I'm imaging a scenario where I need to write a whole second layer of classes with more specific data types and do a bunch of transformations and casts, but maybe it's not so bad. If you have any experience with this or a similar scenario, what are your "lessons learned"?

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• Are there any good Java API for facebook?

  - by Kamikaze Mercenary

  I've played around a bit with twitter4j and found it absolutely wonderful. Now I've been looking into the equivalent for facebook but so far haven't had much luck finding a decent project. I looked into facebook-java-api but it appears that they break their API from release to release. I consider this unacceptable. I'm currently playing around a bit with RestFB and the API seems decent so far but I've been having some connection problems. I'm just looking for a simple library that lets me post status updates, send direct messages and get a list of friends through minimal coding effort. Has anyone had any success using a java API for facebook and if so, what are you using? Thanks.

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• IIS6 Metabase Compatiblity not installing correctly for Vista IIS7

  - by Mr Snuffle

  I've been bashing my head against this one for a few days, and haven't had any luck with it. I'm unable to get my VS2010 ASP.NET project to deploy to IIS. I receive the error "Unable to create the virtual directory. To access local IIS Web sites, you must install the following IIS Components IIS 6 Metabase and IIS 6 Configuration Compatibility ASP.NET In addition, you must run Visual Studio in the context of an Administrator Account" I've most certainly installed the metabase option, but it still shows up. I'm also not sure why it's telling me to install ASP.NET. Google is being entirely unhelpful, I was wondering if anyone here has any suggestions. I'm running Vista Ultimate 64Bit

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• How to structure an enterprise MVC app, and where does Business Logic go?

  - by James

  I am an MVC newbie. As far as I can tell: Controller: deals with routing requests View: deals with presentation of data Model: looks a whole lot like a Data Access layer Where does the Business Logic go? Take a large enterprise application with: Several different sources of data (WCF, WebServices and ADO) tied together in a data access layer (useing multiple different DTOs). A lot business logic segmented over several dlls. What is an appropriate way for an MVC web application to sit on top of this (in terms of code and project structure)? The example I have seen where everything just goes in the Model folder don't seem like they are appropriate for very large applications. Thanks for any advice!

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• Help with game development. Render loop?

  - by John

  Hello, I'm working on a simple game, this is my first game project. Most of the samples I find have a Render Loop where all the game logic is made too and I just don't like this. Let's say I have a ball with X=0, and a wall in X=10 and in a slow machine, the first loop places the ball in X=7 and in a second loop, it places the ball in X=14. It would just crash the game! Is this "render loop" the right way to make games? Should I write code to check for things like this in every frame? Example, new frame X=14, last frame have X=7, so I should check if there's anything from X=7 to X=14?? I was thinking that I should have a separated thread for the game logic and in the render loop, I should just "take a snapshot" of the current game logic and display that, no? How do you guys, experienced game developers work around this? thanks!

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• MYSQL Event to update another database table

  - by Lee

  Hey All, I have just taken over a project for a client and the database schema is in a total mess. I would like to rename a load of fields make it a relationship database. But doing this will be a painstaking process as they have an API running of it also. So the idea would be to create a new database and start re-writing the code to use this instead. But I need a way to keep these tables in sync during this process. Would you agree that I should use MYSQL EVENT's to keep updating the new table on Inserts / updates & deletes?? Or can you suggest a better way?? Hope you can advise !! thanks for any input I get

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• A tool to find and fix incomplete source code documentation

  - by Pekka

  I have several finished, older PHP projects with a lot of includes that I would like to document in javadoc/phpDocumentor style. While working through each file manually and being forced to do a code review alongside the documenting would be the best thing, I am, simply out of time constraints, interested in tools to help me automate the task as much as possible. The tool I am thinking about would ideally have the following features: Parse a PHP project tree and tell me where there are undocumented files, classes, and functions/methods (i.e. elements missing the appropriate docblock comment) Provide a method to half-way easily add the missing docblocks by creating the empty structures and, ideally, opening the file in an editor (internal or external I don't care) so I can put in the description. Optional: Automatic recognition of parameter types, return values and such. But that's not really required. The language in question is PHP, though I could imagine that a C/Java tool might be able to handle PHP files after some tweaking. Thanks for your great input!

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• C++/CLI: Compiling static library with /CLR support

  - by user289770

  We have old (working) code that consists of a static library compiled with /CLR, and a C++/CLI DLL that links to the static lib. We are about to add new features to this static lib. Now, I've have heard from numerous sources that CLR static libraries are not supported by Microsoft, and therefore I'm pushing to clean this up and switch to DLL before we start adding new features to this project. However, I haven't been able to find any official information from Microsoft regarding this (say, from MSDN - other than their forums). I will appreciate any resources about this whole "static lib with CLR" issue.

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• Django as S3 proxy

  - by schneck

  Hi there, I extended a ModelAdmin with a custom field "Download file", which is a link to a URL in my Django project, like: http://www.myproject.com/downloads/1 There, I want to serve a file which is stored in a S3-bucket. The files in the bucket are not public readable, and the user may not have direct access to it. Now I want to avoid that the file has to be loaded in the server memory (these are multi-gb-files) avoid to have temp files on the server The ideal solution would be to let django act as a proxy that streams S3-chunks directly to the user. I use boto, but did not find a possibility to stream the chunks. Any ideas? Thanks.

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• groovy (java) error grabbing files

  - by senzacionale

  i can not grab files. I get: java.lang.RuntimeException: Error grabbing Grapes -- [unresolved dependency: org.apache.ivy#ivy;2.1.0: not found start of script which grab files import groovy.text.SimpleTemplateEngine import java.security.MessageDigest import org.apache.commons.cli.OptionBuilder import org.apache.commons.cli.Options import org.apache.commons.cli.PosixParser import org.apache.commons.io.FileUtils import org.apache.ivy.core.settings.IvySettings import org.apache.ivy.plugins.parser.m2.PomModuleDescriptorParser import org.apache.tools.ant.Project import org.apache.tools.ant.ProjectHelper import org.apache.tools.ant.types.Path import org.apache.commons.cli.HelpFormatter //First grab the grapes we need for the script and create a few beans to hold some values @Grab(group = 'org.apache.ant', module = 'ant', version = '1.7.1') @Grab(group = 'commons-io', module = 'commons-io', version = '1.4') @Grab(group = 'commons-cli', module = 'commons-cli', version = '1.2') @Grab(group = 'org.apache.ivy', module = 'ivy', version = '2.1.0')

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• IAuthenticationRequest.RedirectToProvider is not supposed to return, yet it does

  - by ripper234

  The method DotNetOpenAuth.OpenId.RelyingParty.IAuthenticationRequest.RedirectToProvider() is documented never to return: Redirects the user agent to the provider for authentication. Execution of the current page terminates after this call. However, it does return under the latest implementation (3.4.3). I'm using the following code: using (var relayingParty = new OpenIdRelyingParty()) { var response = relayingParty.GetResponse(); if (response == null) { // Stage 2: user submitting Identifier var openId = Request.Form["openId"]; relayingParty.CreateRequest(openId).RedirectToProvider(); throw new Exception("Never gets here"); } ... } (The line with "Never gets here" is reached). I need to return an ActionResult from this method ... Is this a known bug? Is there a aorkaround? Should I return EmptyResult? As far as I understand this is a bug - I submitted it in the project issue tracker.

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• Interface "not marked with serializable attribute" exception

  - by Joel in Gö

  I have a very odd exception in my C# app: when trying to deserialize a class containing a generic List<IListMember> (where list entries are specified by an interface), an exception is thrown reporting that "the type ...IListMember is not marked with the serializable attribute" (phrasing may be slightly different, my VisualStudio is not in English). Now, interfaces cannot be Serializable; the class actually contained in the list, implementing IListMember, is [Serializable]; and yes, I have checked that IListMember is in fact defined as an interface and not accidentally as a class! I have tried reproducing the exception in a separate test project only containing the class containing the List and the members, but there it serializes and deserializes happily :/ Does anyone have any good ideas about what it could be?

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• Single Sign on using Shibboleth

  - by user196614

  Hi, I have to implement Single Sign On in my .NET(3.5) project using Shibboleth. Detailed requirement goes this way: 1) I have developped a web application using .NET (3.5) named "abc.com". 2) There are some third party applications which will be launched from "abc.com" 3) If I have logged in to "abc.com" and now if I launch any of the supported third party applications then it should not ask for login information again. From last few days I have been reading Shibboleth from https://spaces.internet2.edu/display/SHIB2/Home I have also installed Identity provider (IdP) and Service Provide (SP) from https://spaces.internet2.edu/display/SHIB2/Installation Still I am unable to make out how my "abc.com", third party application and Shibboleth will fit into one picture? Can anyone please guide me?

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• Visual Studio: Add necessary using directives with macro

  - by Kiril

  Hello guys, I am trying to do the following. Imagine you are reading some LINQ article and you decide to copy/paste some code from the article to a newly created project. In most cases, if you directly compile you will probably get an error for missing a using directives or assembly reference. I am trying to optimize the process where I have to go each keyword, click on it with the mouse and hit Shift + Alt + F10 to add the using directive. I know that it is not that much pain, but for the sake of optimization, is it possible and at what cost? Best Regards, Kiril

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• GlassFish Starting Up Java SE Client - No Initial Context Exception

  - by Marcel

  Hi I have developed a java se client that calls some session beans on a glassfish server. I connect to the bean remote interface like this. context = new InitialContext(); em = (ICrudService) context.lookup("java:global/BackITServer/CrudServiceImpl"); This works fine from inside eclipse (gf-client on build path). When I export my project as a runnable jar and call it on the console with java -jar BackItClient.jar I get a NoInitialContextException. MMMM. I would very much appreciate some help. Thank You Greetings Marcel PS: Do I really have to pack all the jars which gf-client is referencing into my jar?

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• Simple HTTP Framework and time issue

  - by Deniz Acay

  I'm using Simple Framework for my recent project, and there is a problem with the date headers generated by the system. I can get my local time from Date class correctly, but setDate method of Simple's Response class sets date in milliseconds and when i do that by calling System.currentTimeInMillis, dates in response headers are incorrect. is there any way to solve this problem with Simple Framework? If not, what can i do except calling set method with a date string? Thanks in advance... EDIT: Date in the headers are in wrong timezone. And i also tried Calendar.getInstance().getTimeInMilis() method.

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• Segment text using fullstops

  - by Sourabh

  Hi I need to segment text using fullstops using PHP/Javascript.The problem is if I use "." to split text then abbreviations , date formatting (12.03.2010 ) or urls as well split-ed , which I need to prevent.There are many such possibilities , I might not be able to imagine. How to recognize that the "." is used as fullstop and nothing else ? When I googled I found about SRX http://www.lisa.org/fileadmin/standards/srx20.html , is any opensource PHP project segment text using these rules ? I can do with any Linux based command line utility as well unless it is not paid. Thanks

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• WCF without NET 3.0

  - by Murat

  Hello there, Does anyone tell me if it's possible to use WCF without .NET 3.0? Our company develops a 3-tier client-server end-user solution based on .Remoting. One of the limitation of our project is using .NET 2.0. Unfortunately .NET 3.0 framework is too large to be included in our installation package and I don't know if MS license allows this. But WCF might helps us to drastically reduce our efforts in some tasks. Does anyone have a chance to use WCF from Mono? Thanks in advance -- Murat

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