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  • managing library dependencies with Boost.Build and C++

    - by user931794
    I want to develop a project which can be built on a bunch of different platforms. The project code will be in C++, what's the the best way to manage libraries? I plan on using bjam as the build system because I'm going to be depending on Boost and their unit testing framework as well. The two dependent libraries are Boost itself and FLTK. The possibilities that come to mind for library management are: include build artifacts (binaries) and headers for all supported platforms in-tree include complete source for all dependent libraries in-tree, and somehow script them as dependencies A combination of 1 and 2, like node.js does with v8 inform the user that they need to build the libraries themselves and then have them on the PATH or in some special directory, like libcurl does with its dependencies What is the best approach here? The project will probably not grow beyond a few thousand lines over the next six months, but I want to make the right choice here so that I don't have to come back and switch everything around later.

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  • Bug in the official Android Fragments training sample?

    - by Jeff Axelrod
    It seems to me that there must be a bug in the Android Fragments demo. As background, Fragments are apparently sometimes instantiated by the Android OS and thus need a public no-arg constructor: All subclasses of Fragment must include a public empty constructor. The framework will often re-instantiate a fragment class when needed, in particular during state restore, and needs to be able to find this constructor to instantiate it. If the empty constructor is not available, a runtime exception will occur in some cases during state restore. But the NewsReader demo from the official Android training on Fragments constructs the HeadlinesFragment class and configures it with setOnHeadlineSelectedListener(this) from NewsReaderActivity.onCreate(). If the Android OS re-instantiates this fragment, the mHeadlineSelectedListener field will be null because HeadlinesFragment doesn't save or restore its state. Is this a bug or am I missing something?

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  • django sending emails

    - by dotty
    Hay, i can't seem to send emails using send_mail(), and I'm not sure why. Here's my details settins.py EMAIL_HOST = 'localhost', EMAIL_PORT = 25 My view from django.core.mail import send_mail send_mail('Subject here', 'Here is the message.', '[email protected]', ['[email protected]'], fail_silently=False) This fails with the error getaddrinfo() argument 1 must be string or None Anyone have any ideas? I'm developing on OS X Leopard Heres the last traceback /System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/smtplib.py in connect for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM): ... ? Local vars Variable Value host ('localhost',) msg 'getaddrinfo returns an empty list' port 25 self <smtplib.SMTP instance at 0x153b1e8>

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  • Eclipse launch error when trying to run an Android app.

    - by user259642
    I'm trying to set up my workstation for Android development with Eclipse Galileo. I installed the latest ADT plugin and the Android SDK, but I get this error when I try to run any basic Android project I create. eclipse.buildId=M20090917-0800 java.version=1.6.0_17 java.vendor=Sun Microsystems Inc. BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US Framework arguments: -product org.eclipse.epp.package.java.product -product org.eclipse.epp.package.java.product Command-line arguments: -os win32 -ws win32 -arch x86 -product org.eclipse.epp.package.java.product -data C:\Documents and Settings\dmcnamar\workspace -product org.eclipse.epp.package.java.product Error Tue Jan 26 18:00:41 EST 2010 An internal error occurred during: "Launching HelloWorld". java.lang.NullPointerException at com.android.ide.eclipse.adt.internal.launch.AndroidLaunchController.launch(Unknown Source) at com.android.ide.eclipse.adt.internal.launch.LaunchConfigDelegate.doLaunch(Unknown Source) at com.android.ide.eclipse.adt.internal.launch.LaunchConfigDelegate.launch(Unknown Source) at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:853) at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:703) at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:866) at org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1069) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

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  • How To Aggregate API Data?

    - by Mindblip
    Hi, I have a system that connects to 2 popular APIs. I need to aggregate the data from each into a unified result that can then be paginated. The scope of the project means that the system could end up supporting 10's of APIs. Each API imposes a max limit of 50 results per request. What is the best way of aggregating this data so that it is reliable i.e ordered, no duplicates etc I am using CakePHP framework on a LAMP environment, however, I think this question relates to all programming languages. My approach so far is to query the search API of each provider and then populate a MySQL table. From this the results are ordered, paginated etc. However, my concern is performance: API communication, parsing, inserting and then reading all in one execution. Am I missing something, does anyone have any other ideas? I'm sure this is a common problem with many alternative solutions. Any help would be greatly appreciated. Thanks, Paul

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  • What's the difference between IEquatable and just overriding Object.Equals() ?

    - by devoured elysium
    I want my Food class to be able to test whenever it is equal to another class. I will later use it against a List, and I want to use its List.Contains() method. Should I implement IEquatable or just override Object.Equals()? From MSDN: This method determines equality by using the default equality comparer, as defined by the object's implementation of the IEquatable.Equals method for T (the type of values in the list). So my next question is: which functions/classes of the .NET framework make use of Object.Equals()? Should I use it in the first place? Thanks

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  • Wired component null in seam EntityHome action

    - by rangalo
    I have a custom EntityHome class. I wire the dependent entity in the wire method, but when I call the action (persist) the wired component is always null. What could be the reason, similar code generated by seam gen is apparently working. Here is the entity class. I have overrden persist method to log the value of the wired element. @Name("roundHome") @Scope(ScopeType.CONVERSATION) public class RoundHome extends EntityHome<Round>{ @In(required = false) private Golfer currentGolfer; @In(create = true) private TeeSetHome teeSetHome; @Override public String persist() { logger.info("Persist called"); if (null != getInstance().getTeeSet() ) { logger.info("teeSet not null in persist"); } else { logger.info("teeSet null in persist"); // wire(); } String retVal = super.persist(); //To change body of overridden methods use File | Settings | File Templates. return retVal; } @Logger private Log logger; public void wire() { logger.info("wire called"); TeeSet teeSet = teeSetHome.getDefinedInstance(); if (null != teeSet) { getInstance().setTeeSet(teeSet); logger.info("Successfully wired the teeSet instance with color: " + teeSet.getColor()); } } public boolean isWired() { logger.info("is wired called"); if(null == getInstance().getTeeSet()) { logger.info("wired teeSet instance is null, the button will be disabled !"); return false; } else { logger.info("wired teeSet instance is NOT null, the button will be enabled !"); logger.info("teeSet color: "+getInstance().getTeeSet().getColor()); return true; } } @RequestParameter public void setRoundId(Long id) { super.setId(id); } @Override protected Round createInstance() { Round round = super.createInstance(); round.setGolfer(currentGolfer); round.setDate(new java.sql.Date(System.currentTimeMillis())); return round; } } Here the xhtml <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:s="http://jboss.com/products/seam/taglib" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:a="http://richfaces.org/a4j" xmlns:rich="http://richfaces.org/rich" template="layout/template.xhtml"> <ui:define name="body"> <h:form id="roundform"> <rich:panel> <f:facet name="header>"> #{roundHome.managed ? 'Edit' : 'Add' } Round </f:facet> <s:decorate id="dateField" template="layout/edit.xhtml"> <ui:define name="label">Date:</ui:define> <rich:calendar id="date" datePattern="dd/MM/yyyy" value="#{round.date}"/> </s:decorate> <s:decorate id="notesField" template="layout/edit.xhtml"> <ui:define name="label">Notes:</ui:define> <h:inputTextarea id="notes" cols="80" rows="3" value="#{round.notes}" /> </s:decorate> <s:decorate id="totalScoreField" template="layout/edit.xhtml"> <ui:define name="label">Total Score:</ui:define> <h:inputText id="totalScore" value="#{round.totalScore}" /> </s:decorate> <s:decorate id="weatherField" template="layout/edit.xhtml"> <ui:define name="label">Weather:</ui:define> <h:selectOneMenu id="weather" value="#{round.weather}"> <s:selectItems var="_weather" value="#{weatherCategories}" label="#{_weather.label}" noSelectionLabel=" Select " /> <s:convertEnum/> </h:selectOneMenu> </s:decorate> <div style="clear: both;"> <span class="required">*</span> required fields </div> </rich:panel> <div class="actionButtons"> <h:commandButton id="save" value="Save" action="#{roundHome.persist}" rendered="#{!roundHome.managed}" /> <!-- disabled="#{!roundHome.wired}" /> --> <h:commandButton id="update" value="Update" action="#{roundHome.update}" rendered="#{roundHome.managed}" /> <h:commandButton id="delete" value="Delete" action="#{roundHome.remove}" rendered="#{roundHome.managed}" /> <s:button id="discard" value="Discard changes" propagation="end" view="/Round.xhtml" rendered="#{roundHome.managed}" /> <s:button id="cancel" value="Cancel" propagation="end" view="/#{empty roundFrom ? 'RoundList' : roundFrom}.xhtml" rendered="#{!roundHome.managed}" /> </div> <rich:tabPanel> <rich:tab label="Tee Set"> <div class="association"> <h:outputText value="Tee set not selected" rendered="#{round.teeSet == null}" /> <rich:dataTable var="_teeSet" value="#{round.teeSet}" rendered="#{round.teeSet != null}"> <h:column> <f:facet name="header">Course</f:facet>#{_teeSet.course.name} </h:column> <h:column> <f:facet name="header">Color</f:facet>#{_teeSet.color} </h:column> <h:column> <f:facet name="header">Position</f:facet>#{_teeSet.pos} </h:column> </rich:dataTable> </div> </rich:tab> </rich:tabPanel> </h:form> </ui:define> </ui:composition>

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  • How to simulate a file read error in the CRT

    - by Mark0978
    Using VS2008, we would like to simulate a file that has a size of X, but that has a read failure at X-Y bytes, so that we get an error indication. Anyone have an idea of how to do this on windows? Looks like there is a solution for linux, but I can't really come up with a way to do this on windows. We have multiple developers, multiple machines, and cppunit testing framework, so I want a software only design. I'm trying to simulate the actual CRT failing, so I can test the code that is dealing with the failure.

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  • Is .net 4.0 really not capable of sending emails with attachments larger than 3MB's

    - by JL
    I recently had an issue after upgrading my .net framework to 4.0 from 3.5, I did this because in 4.0 the SMTPClient finally sends a QUIT command to the SMTP server. However recently I was most disturbed to run into a base64 decoding issue, when sending out emails with attachments larger than 3MB's using .net v4 smtpclient: System.Net.Mail.SmtpException: Failure sending mail. --- System.IndexOutOfRangeException: Index was outside the bounds of the array. at System.Net.Base64Stream.EncodeBytes(Byte[] buffer, Int32 offset, Int32 count, Boolean dontDeferFinalBytes, Boolean shouldAppendSpaceToCRLF) at System.Net.Base64Stream.Write(Byte[] buffer, Int32 offset, Int32 count) at System.Net.Mime.MimePart.Send(BaseWriter writer) at System.Net.Mime.MimeMultiPart.Send(BaseWriter writer) at System.Net.Mail.Message.Send(BaseWriter writer, Boolean sendEnvelope) at System.Net.Mail.SmtpClient.Send(MailMessage message) --- End of inner exception stack trace --- I read this connect bug listing here: http://connect.microsoft.com/VisualStudio/feedback/details/544562/cannot-send-e-mails-with-large-attachments-system-net-mail-smtpclient-system-net-mail-mailmessage and also this bug listing here: http://connect.microsoft.com/VisualStudio/feedback/details/102644/system-net-mail-fails-to-send-index-was-outside-the-bounds-of-the-array So my question is - is .net 4.0 RTM really not capable of such an easy task as sending a message with an attachment larger than 3MB's?

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  • Practices for Foreground/Background threads in .NET

    - by Andrei Taptunov
    I work with in-house legacy communication framework which exposes some high level abstractions. These abstractions are wrappers with some logic around .NET threads. When I looked at code I've noticed that some abstractions are wrappers around foreground threads while others are wrappers around background threads. The sad thing is that I don't see any logic why in some cases foreground threads are used and background in other cases. Are there any guidelines or patterns & practices when it's better to choose one over another on server side and client side (I believe there should be some difference)?

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  • How to use Obj-C classes in MacRuby

    - by beno1604
    I am trying to use an external Obj-C class in my MacRuby project, but I can't figure out how to import it. Specifically, I want to use ObjectiveResource inside a MacRuby 0.5 project (since ActiveResource doesn't work - yet). I have gotten as far as the 'framework' command in MacRuby, but it only seems to apply to actual frameworks. Questions: where should I install the objective-resource directory? how do I pull these classes inside my ruby code? Thanks for any help!

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  • Is there a Windows API to modify file type associations for an extension?

    - by JohnFx
    I'm looking for a way to programatically tweak the particulars of a file association on a Windows system. For example, the "Application User to Perform this Action" setting for the "Open" action for a particular file type. Clearly I could do this by modifying the registry directly, but if there is an API I'd prefer to use that as it would likely be more resilient to changes in the OS handling of mapping extensions to applications. For my purposes I'm needing to write this in VBScript (.VBS) file because it is part of a package to be used with VMWare ThinApp that mandates it. However, I'll port/wrap/whatever I need to make this week, so I am open to any solution (including using the .NET framework)

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  • How can I change the name of a dynamic assembly after it has been created?

    - by Samuel Jack
    Is there any way to change the name of a dynamic assembly after it has been created? I'm using a framework that uses dynamic methods, and it is creating a dynamic assembly with the same name as my main assembly (which causes problems with WPF when it tries to load resources). So I need to find a workaround, and I thought of trying to change the name of the dynamic assembly. I've tried using GetName() and then setting the Name property, but it appears that GetName returns a clone of the name because my change doesn't stick. What else can I try?

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  • what do I need to start developing in .NET

    - by Mahew
    Hi All, thanks in advance for your time, Over the last year I have moved from a beginner PHP developer to a more intermediate developer, I use Mac OS X and a local development server environment (MAMP). I am thinking about starting to develop using the .NET framework. Can anyone give me some advice? What do I need to begin? How similar is .NET to PHP? What is the relationship between ASP and .NET? Is there anything novel or vital I should know about developing in .NET? (I know .NET is written using microsoft technologies...) Anything of use would be valuable! Cheers!

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  • .Net opening and closing database connections

    - by Dan
    I designed the data access portion of our framework so that every time a business object needs to interact with the database it would have to open a connection, invoke the data access layer (to execute the query), and then close the connection. Then if it needed to run in a transaction it would open the connection, begin the transaction, invoke the data access layer (to execute the query) and then commit the transaction, close the transaction, and finally close the connection. I did it this way with the mindset of open late and close early... but what if I needed to call other BO's to submit data in a single transaction? Is there a better way to handle opening and closing connections as well as working with transactions? I'm a rookie in designing application architecture so I hope I'm not doing this wrongly... any help is appreciated.

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  • XCode newbie: How to find the source code for standard or system libraries?

    - by Jan Hettich
    XCode newbie question here: If I'm programming in C++ or objective C, and I #include or #import a library; e.g. #include <iostream> #import <Cocoa/Cocoa.h> I'm often not sure where to look for these header files in the directory structure on my Mac. In other development environments, you can right click the included or imported filename and have the option to jump to source. Is there such a feature in XCode? Also, for the standard C++ libraries and the Cocoa framework, is the source code for the implementation files available, or only the headers together with compiled link libraries? Thanks!

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  • Using VRaptor3 with Tomcat UnpackWARs property setted to false

    - by VinTem
    Hi there, I have to deploy my web app to a tomcat container with the unpackWARs property defined to false. When I do that, although the application is successfully deployed, when I try to access my url I always got a 404 error. I just don't receive that error when I try to access a direct file like index.html for instance. But I can't do that, the VRaptor framework is responsible for routing my url to the jsp file. Does anyone know if I have do anything else? Thanx

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  • XPCOM support in Android webkit browser?

    - by Krish
    Does the Android WebKit supports the XPCOM framework or NPRuntime API`s as like Firefox? How to implement JavaScript in the Android WebKit plug-in? Update: I am writing a media player plug-in for the Android WebKit browser and my plug-in needs to get the command from the web page through JavaScript (some actions like play/pause/stop/resize are issued as JavaScript commands from the browser). My plug-in is written in native C code. Are there any examples or sample plug-in available for JavaScript communication?

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  • Kohana 3 simple relations..

    - by matiit
    I'm trying to write a very simple cms (for learning purposes) in kohana 3 web framework. I have my db schemas and i want to map it to ORM but i have problems with relations. Schemas:articles and categories One article has one category. One category might has many articles of course. I think it is has_one relationship in article table.(?) Now php code. I need to create application/classes/models/article.php first, yes? class Model_Article extends ORM { protected // and i am not sure what i suppose to write here }

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  • Creating Mock object of Interface with type-hint in method fails on PHPUnit

    - by Mark
    I created the following interface: <?php interface Action { public function execute(\requests\Request $request, array $params); } Then I try to make a Mock object of this interface with PHPUnit 3.4, but I get the following error: Fatal error: Declaration of Mock_Action_b389c0b1::execute() must be compatible with that of Action::execute() in D:\Xampp\xampp\php\PEAR\PHPUnit\Framework\TestCase.php(1121) : eval()'d code on line 2 I looked through the stack trace I got from PHPUnit and found that it creates a Mock object that implements the interface Action, but creates the execute method in the following way: <?php public function execute($request, array $params) As you can see, PHPUnit takes over the array type-hint, but forgets about \requests\Request. Which obviously leads to an error. Does anyone knows a workaround for this error? I also tried it without namespaces, but I still get the same error.

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  • Do Any Client-Side JavaScript Frameworks Integrate Well With Node.js+Express.js+socket.io.js?

    - by Tom D
    I'm building an webapp using Node.js+Express.js+socket.io.js on the backend. Do any of the popular front-end frameworks (Agility, Angular, Backbone, Closure, Dojo, Ember, GWT, jQuery, Knockback, Knockout, Spine, YUI, etc) integrate well with this backend for "real-time" applications? I want my application to have a very "real-time" feel. Specifically, when a user submits a form I want the information to be sent using web sockets to the backend for validation and (if validation passes) to be updated in the database. Then, the server-side will use web sockets to send a confirmation that the data was saved or some list of errors. I will use the server's response to update the page using JavaScript. I know all this can be done with any of the listed frameworks. I'm interested in features of particular frameworks that will help the framework integrate better with the Node-based backend than the other frameworks.

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  • UIScrollView resizes when a UIViewController is pushed in UINavigationController. Why?

    - by user210504
    Hi! When I push a UIViewController within a UINavigationController, the UIScrollView in the view changes dimensions. Now even I am trying to resize the UIScrollView. It wont simply resize. It maintains the framework dimensions. Any idea why this would be happening. Example: My NIB has a view which has a scrollview with dimensions (320, 430) now when I push the UIViewController associated with the view the scrollview still shows dimensions has 320, 430, but is drawn much smaller then 320,430 Any suggestions in this regard.

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  • How to do a sample rate conversion in Windows (and OSX)

    - by Paperflyer
    I am about to write an audio file converter for my side job at the university. As part of this I would need sample rate conversion. However, my professor said that it would be pretty hard to write a sample rate converter that was both of good quality and fast. On my research on the subject, I found some functions in the OSX CoreAudio-framework, that could do a sample rate conversion (AudioConverter.h). After all, an OS has to have some facilities to do that for its own audio stack. Do you know a similar method for C/C++ and Windows, that are either part of the OS or open source? I am pretty sure that this function exists within DirectX Audio (XAudio2?), but I seem to be unable to find a reference to it in the MSDN library.

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  • i cannot see movie playing in iphone simulator

    - by Neelam Roy
    Hi, i have created a application that plays movie on button click..my application is running without any warning or error. But i am not able to see the movie don't know why? I have added the Media player framework and also imported the #import in viewController.h my button action code is as follow... -(IBAction)playMyMovie:(id)sender{ NSBundle *bundle =[NSBundle mainBundle]; NSString *moviePath = [bundle pathForResource:@"jumps" ofType:@"mov"]; NSURL *movieURL = [[NSURL fileURLWithPath:moviePath] retain]; MPMoviePlayerController *theMovie =[[MPMoviePlayerController alloc] initWithContentURL:movieURL]; theMovie.scalingMode = MPMovieScalingModeAspectFill; [theMovie play]; } Please tell me what i am missing..

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  • jquery noConflict not working in IE8 only

    - by slik
    I have a website using the prootype framework and I am looking to use a jquery plugin. Everything works just not in IE8. It works in ie7 which amazes me. Any idea what maybe wrong? jQuery.noConflict(); function OpenUp(sURL){ window.open(sURL,null,'height=560,width=820,status=yes,toolbar=yes,menubar=yes,location=yes,resizable=yes,scrollbars=yes',false); } jQuery(document).ready(function($) { $("head").append("<link>"); css = $("head").children(":last"); css.attr({ rel: "stylesheet", type: "text/css", href: "/my/docs/jquery.simplyscroll.css" }); $("#scroller").simplyScroll({ autoMode: 'loop', framerate: 1, speed: 1 }); }); I also tired the following: var $j = jQuery.noConflict(); var j = jQuery.noConflict(); everythig works just not in IE8 alone.

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