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• What parser generator do you recommend

  - by stefan.ciobaca

  I'm currently shopping for a FOSS parser generator for a project of mine. It has to support either C or C++. I've looked at bison/flex and at boost::spirit. I went from writing my own to spirit to bison to spirit to bison to spirit, each time hit by some feature I found unpleasant. The thing I hate most about bison/flex is that they actually generate C/C++ source for you. There are a number of disadvantages to this, e.g. debugging. I like spirit from this point of view, but I find it very very heavy on syntax. I am curious about what you are using, what you would recommend, and general thoughts about the state of the art in parser generators. I am also curious to hear about approaches being used in other languages for parsing problems.

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• vs 2010 Deployment without Web Deploy

  - by dritterweg

  with vs 2008 I always used Web Deployment Project to build to three different environments. It is maybe not the best solution, since I still have to xcopy the built files to the server, but it is simple. now with vs 2010 it looks promising, but It looks also complicated. My hosting doesn't have Web Deploy, the newest feature and the flagship technology for deployment in vs2010. My question how can I just build for each environment and copy the files over to the server. Using the Build Deployment Package will create the zip file and when I extract it, it will output so many files and confusing folder structure. Anyone has suggestion?

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• Drawing a path with a line in OpenLayers using JavaScript

  - by Andreas Grech

  I have seen the examples presented here of how to draw a line but the examples only show how to do it with the mouse, by clicking. What I want to do is draw the line manually using JavaScript given a list of Longitude and Latitude coordinates. The reason I cannot work on the source provided in the link above is because they are only calling activate on the feature, and then let the user point and click on the map. Has anyone ever drew a path on an OpenLayers map programatically? What I want to do is exactly this: http://openspace.ordnancesurvey.co.uk/openspace/example4.html, but without using OpenSpace.

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• How do I get Nant to use the 4.0 compiler to target .Net 3.5

  - by Rory Becker

  Yes I know that sounds a little bit crazy, but I've got .Net 3.5 deployed in the field and I'd like to use the new 4.0 compiler to target it. There are several new syntactic sugar features in the latest versions of Vb.Net and C# which I would like to use,but I am unable (just yet) to enforce a new version of the .Net framework and CLR on my client base. Before the nay sayers jump in with both feet... I have just successfully used Studio 2010 to compile a 3.5 targeted app which used VB.Net auto properties (A new feature in VB.Net 10) so I know the compilers are capable somehow. So back to my question.... How do I convince Nant to use the 4.0 compiler, but to target .Net 3.5 (CLR 2.0) Update: I am using the csc and vbc tasks and not the Solution task. although I'd settle for an answer on how to do this direct with the compilers at this point.

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• Django Admin drop down combobox and assigned values

  - by Daniel Garcia

  I have several question for the Django Admin feature. Im kind of new in Django so im not sure how to do it. Basically what Im looking to do is when Im adding information on the model. Some of the fields i want them to be drop-downs and maybe combo-boxes with AutoCompleteMode. Also looking for some fields to have the same information, for example if i have a datatime field I want that information to feed the fields day, month and year from hoti.hotiapp.models import Occurrence from django.contrib import admin class MyModelAdmin(admin.ModelAdmin): exclude = ['reference',] admin.site.register(Occurrence, MyModelAdmin) Anything helps Thanks in advance

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• Why not allow mutation of the this binding?

  - by gnucom

  Hi Everyone, I'm building a interpreter/compiler for a school project (well now its turning into a hobby project) and an instructor warned me not to allow mutation of the 'this' binding (he said it was gross and made a huge deal about it) but I never learned why this is so... dangerous or bad. I'm very curious about why this is so bad. I figured this sort of feature could be useful in some way or another. I'm wondering if anyone familiar with building languages can tell me what sort of problems mutation on the 'this' binding can cause, and if they know of any cool or useful tricks that one could do if it actually was allowed. Do any languages that you're aware of allow mutation of 'this'? Thanks,

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• Spring security annotations with EL -- requires debug information compiled in?

  - by HDave

  I am considering using Spring Security annotations for my application, with the EL (expression language) feature. For example: @PreAuthorize("hasPermission(#contact, 'admin')") public void deletePermission(Contact contact, Sid recipient, Permission permission); I need the EL capability because I have built my own ACL implementation. However, to use this capability with the "#contact" type arguments, the Spring documentation says this: You can access any of the method arguments by name as expression variables, provided your code has debug information compiled in. This begs two questions: It is acceptable to have a production application commercially distributed with debug info in it? If not, is there any way around this? Thanks for any guidance on this!

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• ASP .NET - Substitution and page output (donut) caching - How to pass custom argument to HttpRespons

  - by zzare

  I would like to use substitution feature of donut caching. public static string GetTime(HttpContext context) { return DateTime.Now.ToString("T"); } ... The cached time is: <%= DateTime.Now.ToString("T") %> <hr /> The substitution time is: <% Response.WriteSubstitution(GetTime); %> ...But I would like to pass additional parameter to callback function beside HttpContext. so the question is: How to pass additional argument to GetTime callback? for instance, something like this: public static string GetTime(HttpContext context, int newArgument) { // i'd like to get sth from DB by newArgument // return data depending on the db values // ... this example is too simple for my usage if (newArgument == 1) return ""; else return DateTime.Now.ToString("T"); }

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• Android: No icon for Notification

  - by Omer

  Hello, I wanted to create a notification without the icon in the status bar (the state that is not expanded). I tried the custom expanded view and set the icon for this view only. But it did not work. When I give 0 as icon to the constructor, the icon disappears but notification also does not appear in the expanded view. Notification notification = new Notification(0, "", 0); I tried a lot of combinations but didn't come out with a solution. By the way, I know it is working because I saw this feature in some apps. Thanks.

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• WYSIHAT Installation - not saving photos - Ruby on Rails

  - by bgadoci

  I just successfully installed WysiHat in my rails blog. Seems that the 'add a picture' feature is not working. It successfully allows me to find and select a picture from my desktop but upon clicking save, it does nothing. I also have Paperclip successfully installed. I am wondering if this may have something to do with it. Perhaps Paperclip is getting in the way, or, perhaps I need to connect Paperclip and WysiHat somehow. Any ideas? (let me know if I need to post any code).

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• WinForm PDF viewer with programatic search functionality

  - by Anthony Shaw

  We are currently using PDFTron's PDFView WinForm control to view PDF's in a WinForm application. I can load the file and search the file to highlight a certain text value. We have run into an issue where we have expired our trial license period and do not wish to shell out the $900/seat licensing on 15-20 computers. Does anybody know if the ActiveX Adobe Reader control can support the searching functionality programatically? I've tried that and the FoxIt Reader OCX control and neither seem to have this feature exposed (unless it's hidden really well) Does anybody have any suggestions for other freeware/open source viewers, or less-expensive viewers? TIA!

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• Java JEditorPane Format

  - by ikurtz

  im trying to implement a Chat feature in my application. i have used 2 JEditorPane. one for holding chat history and the other for sending chat to the previous JEditorPane. the JEditorPane is text/html type. the problem i am having is when i put more than one space between characters it is automatically removed by the parser because it is HTML! how can i make it so, that the spaces are not stripped? example: hello world becomes: hello world. also i am having to parse the html tags so the new messages can be added to the history window. is there a better option than using JEditorPane? if i used JTextPane would it be easier to implement? i would like the chat boxes/panes to be able to handle bold, URL embedding for now. thank you and look forward to your guidance.

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• SSRS 2008 - Textbox RTF

  - by Iceman

  Hello, We have rtf text stored in our database that looks like the following: {\rtf1\ansi\deff0{\fonttbl{\f0\fnil\fcharset0 MS Sans Serif;}{\f1\fnil MS Sans Serif;}} {\colortbl ;\red0\green0\blue0;} \viewkind4\uc1\pard\cf1\lang1033\f0\fs22 Some Text Here \f1 \par } It is my understanding that SSRS 2008 should be able to properly display this on a report. Has anyone been able to have this display correctly? Robert Bruckner's Advanced Reporting Services Blog A new feature of SSRS: Leverage the enhanced Textbox (aka "RichText") to define mixed formatting within the same textbox. In addition, HTML strings of text can be imported into the report from a database or other source. Any help is greatly appreciated.

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• Question - Should I use SPItemReceiver or SPEmailEventReceiver

  - by RiverStorm

  Hello, I have custom SharePoint Document Library which I use to upload spreadsheet data into a database. When a spreadsheet is uploaded, the SPItemReceiver triggers, and upload the data. Now, I would like to add an incoming email feature to the document library. My question is...after the document library has received the spreadsheet by email. Should I use the override-able method EmailReceived of the SPEmailEventReceiver to process the data in the spreadsheet or still use the SPItemReceiver? I gather I could use either, but I would like to know your opinion which is better and why. Thanks in advance

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• What Features Do You Want To See in .NET 5/C# 5?

  - by Randolpho

  .NET 4 and Visual Studio 2010 are finally here, along with a host of new features. But we wouldn't be who we are if we didn't long for a feature that didn't make the cut, or that was never even considered. So sound off and let the folks at Microsoft know: What features do you want to see in .NET 5? What features do you want to see in C# 5? F#? VB.NET? Before you vote to close: some may find this question too subjective to let stand, but there are other threads that have stood the test of time. Let this one stand as well.

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• Modifying listbox values with jQuery in WebForm not posting back

  - by Peter

  When hitting a button, an error would occur: System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. --- System.ArgumentException: Invalid postback or callback argument. Event validation is enabled using in configuration or in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. I then added EnableEventValidation="false" into my @Page directive, which fixed the error. Now after manipulating the listbox, the new values in the listbox are not posted back to the server. How can I solve this?

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• What "pieces" are needed in order to set up a cluster of physical servers?

  - by Chris Dutrow

  Background: Currently, we use Rackspace cloud servers. We have no intention to stop using them, but would like to look into setting up a cluster of physical servers (probably desktop computers in the $400 range with 8gb memory each) to offset some of our load and work as a secondary, more powerful, less reliable system. To put things in perspective, we can buy comparable desktop computers for the same price as we pay in one month to rent them on Rackspace Cloud. I understand that this is generally a dumb idea. However, in this particular instance, the server cluster is needed for its computation power. It is not mission-critical, it does not host a consumer-facing website, and if it goes down for a day or two, its not really a problem. Currently, we have access to business class verizon fios. If I understand correctly, we can get at least 25 dedicated IP addresses with this service, this should be enough. Requirements: Each server runs Linux Centos 6.3 Some of the servers run Python and execute processes from a task queue (Redis or RabbitMQ) Some of the servers are capable of serving static files and Python driven REST APIs Some of the servers host a Cassandra database cluster One or more of the servers are a Redis database servers One or more of the servers are PostgreSQL servers Questions: What kind of router or switch is needed? We would like the computers to be able to communicate effectively with each other via internal IP addresses. This is especially important for communicating with servers hosting Redis that need to be able to respond to requests very quickly. Are there special switches or routers that need to be used to connect the servers together? Are Desktop computers ok for this? We have found that we are mostly RAM-bottle necked, I understand that some servers have highly superior CPUs, but I'm not sure we need CPU power as much as we need RAM, which is cheap in Desktop computers. Will we have problems with the WIFI cards in the desktops or any other unexpected hardware limitation? What tools should be used to "image" the servers. For example, when we get an installation right for a Redis server or Cassandra node, are there tools that come with Linux Centos 6.3 to image the server to a USB drive or something like that? Or do we need to use some other software for this? What other things are we missing that we should be concerned about? Thanks so much!

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• SharePoint itemDeleting evert is not working

  - by Clodin

  Hi! I have a site in SharePoint and I want to custom delete from a list. So, I'm creating the public class ListItemEventReceiver : SPItemEventReceiver { public override void ItemDeleting(SPItemEventProperties properties) { if (properties.ListTitle.Equals("Projects List")) { Projects pr = new Projects(); string projectName = properties.ListItem["Project Name"].ToString(); pr.DeleteProject(projectName); } } } Where 'Projects' class has 'DeleteProject' method who deletes the item. But it's doing nothing :( I mention that everything it's ok in Feature.xml Where am I wrong?

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• What makes MVVM uniquely suited to WPF?

  - by Reed Copsey

  The Model-View-ViewModel is very popular with WPF and Silverlight. I've been using this for my most recent projects, and am a very large fan. I understand that it's a refinement of MVP. However, I am wondering exactly what unique characteristics of WPF (and Silverlight) allow MVVM to work, and prevent (or at least make difficult) this pattern from working using other frameworks or technologies. I know MVVM has a strong dependency on the powerful data binding technology within WPF. This is the one feature which many articles and blogs seem to mention as being the key to WPF providing the means of the strong separation of View from ViewModel. However, data binding exists in many forms in other UI frameworks. There are even projects like Truss that provide WPF-style databinding to POCO in .NET. What features, other than data binding, make WPF and Silverlight uniquely suited to Model-View-ViewModel?

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• Need to access the Page object in Global.asax in the PreRequestHandlerExecute

  - by Taher

  I have a huge website (containing around 5000+) pages. There is a theme functionality in the website where user can choose different colors for their profile. Now i want to use the ASP.net theme feature and put different CSS (for different colors) in the theme folder and in Global.asax i want check the user theme and render appropriate link element with the css. But my problem is, i am not able to access the Page element for adding the link in the page. Here is my code Dim page As System.Web.UI.Page = TryCast(System.Web.HttpContext.Current.Handler,System.Web.UI.Page) page.StyleSheetTheme = "Black" But when i run this code I get a Null reference error. P.s : My application is very huge so its not possible to have a master page or a base class and inherit it in every page. Please suggest.

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• jquery, Regexp, make dynamic url

  - by Alexander Corotchi

  Hi , I need a regexp help, because for me it will take a lot of time , for you some minutes:) I have youtube a URL : http://www.youtube.com/watch?v=9_Hd8hXhg7o&feature=youtube_gdata I can't add this in embed object , for embed I have to change in this URL : http://www.youtube.com/v/9_Hd8hXhg7o&hl=en_US&fs=1& It means, that I want to add the youtube cod in some variable, something like this var url = after regexp "9_Hd8hXhg7o"; "http://www.youtube.com/v/" + url +"&hl=en_US&fs=1&"; thanks !

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• Low level qemu based debugging

  - by Dacav

  I've to test some low level code on an ARM architecture. Typically experimentation is quite complicated on the real board, so I was thinking about QEMU. What I'd like to get is some kind of debugging information like printfs or gdb. I know that this is simple with linux since it implements both the device driver for the QEMU Integrator and the gdb feature, but I'm not working with Linux. Also I suspect that extracting this kind of functionality from the Linux kernel source code would be complicated. I'm searching from some simple operating system that already implements one of those features. Do you have some advice? Thanks in advance.

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• How to Package and Deploy Eclipse Java Application

  - by Rick

  Before I begin, I'm new to eclipse, please keep that in mind when replying. :) Here is the situation, I have built an java application that has some dependencies (~10 of them). I would like to easily package this application up and deploy it as a single file to a CD or usb drive. My question is there doesn't seem to be any "nice" wizard to search the project, grab the dependencies and setup the classpath on the target computer. Seems to me I have to do this manually. Is there a better way. Something simple, easy and straight forward. A link to a tutorial on this would be great. Seems to me that this should be a built-in feature to eclipse. Deployment of a web application seems easy enough, but not a java application. Thanks!

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• Libqxt under Qt Creator

  - by I'm Dario

  I want to create a tiny app which needs global shortcuts. So, I have downloaded the current version of libqxt (0.5.1) and opened as a project in Qt Creator. Libqxt compiles without problems in this way, so I thought that adding this in the tab Dependencies of my project it would get added automatically in the build, like Eclipse does with JAR libraries (I know that are different IDEs but it seems to be a common feature among them). What happens? Qt Creator compiles qxt before my project, when needed, but when I want to include its headers Qt Creator keeps warning me that it cannot find them. Probably I am missing the correct name of headers (I tried the headers showed in qxt documentation: http://doc.libqxt.org/0.5.0/classQxtGlobalShortcut.html) By the way, I looked the code for global shortcuts and I think I can rip it out and use it in my app as is and I am going to credit qxt team and open the code of my app.

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• make RMI Stub with netBeans

  - by park

  I see some where in the web that we can make Stub dynamically with Netbeans and it`s a good feature of it. I search a lot but all hits are from Old version (4 or 5) and others told a complete reference is in Netbeans website but the links is removed and i couldn`t find it in the site. Broken Link : rmi.netbeans.org Please if there is way which i don`t know tell me or there is not let me know for not search any more and try to work with rmic. more search results : http://forums.sun.com/thread.jspa?threadID=5037503 http://forums.netbeans.org/post-8076.html&highlight= Thanks

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