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• With the introduction of the HTML5 <canvas> element, could Swing be implemented in GWT?

  - by knorv

  With the introduction of the HTML5 <canvas> element, could Swing theoretically be implemented in Google Web Toolkit (GWT) by using the <canvas> tag for drawing? I'm aware of efforts to port source code from using Swing calls to GWT calls, but what I'm after is a pure behind the scenes port where a Swing application would compile under GWT without any source code modifications. Is that theoretically possible? Why? Why not?

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• EF Code First - Include(x => x.Properties.Entity) a 1 : Many association

  - by VulgarBinary

  Given a EF-Code First CTP5 entity layout like: public class Person { ... } which has a collection of: public class Address { ... } which has a single association of: public class Mailbox { ... } I want to do: PersonQuery.Include(x => x.Addresses).Include("Addresses.Mailbox") WITHOUT using a magic string. I want to do it using a lambda expression. I am aware what I typed above will compile and will bring back all Persons matching the search criteria with their addresses and each addresses' mailbox eager loaded, but it's in a string which irritates me. How do I do it without a string? Thanks Stack!

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• Is there any way to use getaddrinfo() and freeaddrinfo() and still be the program compatible with le

  - by Sam C.

  Hi, in the Winsock2 library getaddrinfo() and freeaddrinfo() was only added in Windows XP and on. I know how to replace them in legacy systems, but a conditional use depending on the Windows version won't help. The application won't start in 9x with a message saying that it was linked to a missing export in WS2_32.dll. I'm using MinGW to compile and link the code and would like to keep using it. Maybe writing those functions by myself? Thank you very much for everything.

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• How to Exclude poperties file from jar file ?

  - by Nisarg Mehta

  Hi All, I have a java application for exaple see below. myProject | |----src | | | |--main | | | |--resources | | | |--userConfig.properties | |--log4j.properties | |---target I am using Maven to build my project .I am using maven command to build jar file. mvn package -DMaven.test.skip=true I want to exclude userConfig.properties file from my jar file so i have mentioned in pom.xml as below. <excludes> <exclude>**/userConfig.properties</exclude> </excludes> but it will exclude from the target folder in which compile code resides. And Application will not run because it will not find the userConfig.properties. Can anyone help me ? Thanks Nisarg Mehta

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• Recovering 'old commits' from multiple git rebases

  - by Benjol

  I am aware of this question, but not to sure how to map it to my current situation. (Rebase is scary, undoing rebase is double scary!) I started out with several different feature branches of my master: master x-x-x-x-x-x-x-x-x-x \ \ \ FeatureA 1-2-3 \ \ FeatureB A-B \ FeatureC X-Y-Z I wanted to merge them all together and check they worked before merging back onto the top of master, so I did a: git checkout FeatureB git rebase FeatureA git mergetool //etc git rebase --continue Then git checkout FeatureC git rebase FeatureB git mergetool //hack hack git rebase --continue Which leaves me with master x-x-x-x-x-x-x-x-x-x \ FeatureA 1-2-3 \ FeatureB A'-B' \ FeatureC X'-Y'-Z' Then I corrected some bits that didn't compile properly, and got the whole feature set to an acceptable state: master x-x-x-x-x-x-x-x-x-x \ FeatureA 1-2-3 \ FeatureB A'-B' \ FeatureC X'-Y'-Z'-W My problem is that my colleagues tell me that we're not ready for FeatureA. Is there any way for me to keep all my work, but also revert to a situation where I can just rebase FeatureC on to Feature B?

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• Handling events exposed on a .NET class via COM in VB6

  - by PeanutPower

  Handling events exposed on a .NET class via COM in VB6 My test .NET (class libary registered for interop in compiler settings) code: Imports System.Runtime.InteropServices <InterfaceType(ComInterfaceType.InterfaceIsIDispatch), ComVisible(True)> _ Public Interface MyEventInterface <DispId(1)> Event Exploded(ByVal Text As String) <DispId(2)> Sub PushRedButton() End Interface <ClassInterface(ClassInterfaceType.None)> _ Public Class EventTest Implements MyEventInterface Public Event Exploded(ByVal Text As String) Implements MyEventInterface.Exploded Public Sub PushRedButton() Implements MyEventInterface.PushRedButton RaiseEvent Exploded("Bang") End Sub End Class My test VB6 application winforms code (which references the above class libary): Public ct As New ComTest1.EventTest Private Sub Command1_Click() ct.add_Exploded (ExplodedHandler) ct.PushRedButton ct.remove_Exploded (ExplodedHandler) End Sub Private Sub ExplodedHandler(ByVal Text As String) MsgBox Text End Sub Specifially I'm not sure how to set up the handler in VB6 the compile error I get is "Argument not optional" on this line in the VB6: ct.add_Exploded (ExplodedHandler)

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• Ambiguous reference when getter/setter have different visibilities

  - by Warren Seine

  The following code raises an ambiguous reference to value at compile time: import flash.display.Sprite; public class Main extends Sprite { private var _value : Number = 0.; public function get value() : Number { return _value; } private function set value(v : Number) : void { _value = v; } public function Main() : void { value = 42.; } } I suspect some kind of bug in the compiler, though I didn't actually read the ECMA standard. Before someone asks those questions: Private setters do make sense. The ambiguity also exists with custom namespaces (which is the problem I'm facing).

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• gradle runJar task?

  - by Misha Koshelev

  Dear All: I am trying to make a task to run my Jar file in gradle. I have come up with the following: task runJar(dependsOn:[jar]){ ant.java(jar:,fork:true) } However, I am unable to find the path to the jar file. Any help much appreciated. Thank you! Misha EDIT: OK this is rather odd. This task runs before compile, etc.??? EDIT: Fixed. The key is in a doLast { } notation, or, in shorthand task runJar(dependsOn:"jar")<<{ ant.java(jar:"${libsDir}${File.separator}${archivesBaseName}.jar",fork:true) } Misha

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• How to reduce compilation times with Boost Asio

  - by Artyom

  Boost.Asio is great library but it has one huge drawback -- extreamly slow compilation times. A simple implementation (really simple) of HTTP protocol (about 1k lines of code) requires about 13.5s to compile under GCC 4.4! I tryed to use PCH but it does not improve compilation times too much (about 1s. only). So are there any tutorials on how to make Boost.Asio compilation times faster? For example what headers should I exactly include for what class. I use for example: io_service, tcp::ip::sockets, tcp::ip::acceptor, deadline_timer, buffers and few functions like async_read, async_write. Any suggestions? P.S.: I do use pimpl whenever I can.

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• Custom QGraphicsItems not compiling and gives "object is private" error

  - by bahree

  Hi, I am trying to create a Custom QGraphicsItem button as shown by Fred here. The code which he posted can be found here. The problem is when I try and compile the code I get the following two errors: /usr/include/qt4/QtGui/qgraphicsitem.h ‘QGraphicsItem::QGraphicsItem(const QGraphicsItem&)’ is private /usr/include/qt4/QtCore/qobject.h ‘QObject::QObject(const QObject&)’ is private Here is the code snippet which essentially is the same as that in the sample above. The error is on the class deceleration. class MyButton : public QObject, public QGraphicsItem { Q_OBJECT Q_INTERFACES(QGraphicsItem) public: MyButton(QGraphicsItem *parent = 0); MyButton(const QString normal, const QString pressed = "", QGraphicsItem *parent = 0); .... } Interestingly the other sample as shown here works fine. The sample code for that can be found here. Any idea what is wrong? Thanks in advance.

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• unresolved external symbol __penter referenced in function _WspiapiStrdup@4

  - by John Weldon

  I started getting this compile error after upgrading to Visual Studio 2010. Not sure if it's related, but I can't figure out what library to reference to satisfy this dependency? Is it just an API change bug or something? Microsoft (R) Program Maintenance Utility Version 10.00.30319.01 Copyright (C) Microsoft Corporation. All rights reserved. del wstest.res wstest.obj wstest.pdb wstest.ilk wstest.exe wstest.exe.manifest vc90.pdb cl -Gh -Ox -DNDEBUG -c -DCRTAPI1=_cdecl -DCRTAPI2=_cdecl -nologo -GS -D_X86_=1 -DWIN32 -D_WIN32 -W3 -D_WINNT -D_WIN32_WINNT =0x0501 -DNTDDI_VERSION=0x05010000 -D_WIN32_IE=0x0600 -DWINVER=0x0501 -D_MT -D_DLL -MDd wstest.c wstest.c link /DEBUG /DEBUGTYPE:cv -out:wstest.exe wstest.obj Ws2_32.lib Shlwapi.lib Microsoft (R) Incremental Linker Version 10.00.30319.01 Copyright (C) Microsoft Corporation. All rights reserved. wstest.obj : error LNK2019: unresolved external symbol __penter referenced in function _WspiapiStrdup@4 wstest.exe : fatal error LNK1120: 1 unresolved externals NMAKE : fatal error U1077: '"c:\program files (x86)\microsoft visual studio 10.0\vc\bin\link.EXE"' : return code '0x460' Stop.

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• Jabber .net rostertree error

  - by Farooq

  Hi, Whenever I add the rostertree control to my form, I can see that the PresenceManager and RosterManager property values for it have this error listed: "Unable to cast object of type 'System.Windows.Forms.DataGridViewTextBoxColumn' to type 'System.ComponentModel.Component'." I can compile the solution and all but this error keeps popping up randomly. Can someone advice when this may happen. I'm thinking it has to do with the controls not being added properly. I'm using Visual Studio 2008. Thanks.

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• Empty accessors do matter? Regarding value types and their modification

  - by Petr

  Hi, I have following code that does not work due to "a" being a value typed. But I thought it would not work even without accessors, but it did: class Program { a _a //with accessors it WONT compile { get; set; } static void Main(string[] args) { Program p = new Program(); p._a.X = 5; //when both accessors are deleted, compiler does not //complain about _a.X not being as variable } } struct a { public int X; } It does not work as "a" is struct. But when I delete accessors from "_a" instance, it works. I do not understand why. Thanks

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• #if 0 as a define

  - by valerio

  I need a way to define a FLAGS_IF macro (or equivalent) such that FLAGS_IF(expression) <block_of_code> FLAGS_ENDIF when compiling in debug (e.g. with a specific compiler switch) compiles to if (MyFunction(expression)) { <block_of_code> } whereas in release does not result in any instruction, just as it was like this #if 0 <block_of_code> #endif In my ignorance on the matter of c/c++ preprocessors i can't think of any naive way (since #define FLAGS_IF(x) #if 0 does not even compile) of doing this, can you help? I need a solution that: Does not get messed up if */ is present inside <block_of_code> Is sure to generate 0 instructions in release even inside inline functions at any depth (i guess this excludes if (false){<block_of_code>} right?) Is standard compliant if possible Thank you

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• Effective Android Programming Techniques

  - by kunjaan

  Please Help me compile a list of Effective Android Programming techniques Don't forget to free resources after use. Lot of resources like Cursors are overlooked. Free them too. Don't Use magic Numbers. values[0] is meaningless. The framework provides very useful accessors like values[SensorManager.DATA_X] "Make use of onPause()/onResume to save or close what does not need to be opened the whole time." protected void onResume() { mSensorManager.registerListener(...); } protected void onStop() { mSensorManager.unregisterListener(...); super.onStop(); } Make your Android UI Fast and Efficient from the Google I/O has a lot of useful UI Performance tips.

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• JUnit: 4.8.1 "Could not find class"

  - by Patrick

  Ok, I am like other and new to jUnit and having a difficult time trying to get it working. I have searched the forum but the answers provided; I am just not getting. If anyone out there could lend me a hand I would greatly appreciate it. Let me provide the basics: OS: mac OS X.6 export JUNIT_HOME="/Developer/junit/junit4.8.1" export CVSROOT="/opt/cvsroot" export PATH="/usr/local/bin:/usr/local/sbin:/usr/localmysql/bin:/opt/PalmSDK/Current/bin/:/usr/local/mysql/bin:$PATH:$JUNIT_HOME:$CVSROOT" export CLASSPATH="$CLASSPATH:$JUNIT_HOME/junit-4.8.1.jar:$JUNIT_HOME" I can compile a test class from a java file, however when I try to then run the test java org.junit.runner.JUnitCore MyTest.class I get the following: JUnit version 4.8.1 Could not find class: MyTest.class Time: 0.001 OK (0 tests) Now I have been in the directory with the MyTest.class which is just somewhere in my file system, I tried moving the source folder to the "junit" folder and the "junit/junit4.8.1" folder and the same result. I cannot even run the tests that came with junit. Thanks patrick

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• how to run fastcgi

  - by joels

  I have fastcgi installed and running. I downloaded a developerkit from fastcgi.com. It had some examples in it. One of the example files echos some stuff. It required a .libs and a .deps I put those folders along with a echo.fcgi file and into the webroot/cgi-bin. If I got to the echo.fcgi url, it works great. I created a simple c file that prints hello world. I compile it using gcc -Wall -o main -lfcgi main.c What do I do with it now? Does it require something like a perl script or php script to be executed. Or, should I just be able to put it in the webroot/cgi-bin folder and go to it's url?

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• .NET Lambda Pass Method Parameter

  - by RM

  Hi All, I hope i'm missing something obvious, but I'm having some troubles defining a method that takes a parameter of a method to fetch the method information for the passed method. I do NOT want actually execute the method. I want to be able to do: busObject.SetResolverMethod<ISomeInterface>(x=>x.GetNameById); Where GetNameById is a method defined on the interface ISomeInterface. In this case, an example of the method being passed in's signature would be: MyVarA GetNameById(int id){ .... } In the above example, the SetResolverMethod's body should be able to return / store the string "GetNameById". There is no standard signature the method being passed in will conform to (except that it will always return an object of some kind). Currently I'm setting the method as a string (i.e. "GetNameById"), but I want it to be compile time checked, hence this question.

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• Not sure whether to use haXe of just plain flash

  - by tominated

  Hi Guys, A local sports clothing company has hired me to make them a flash based jersey colour picker sort of thing. They are wanting it so users can check out what particular designs would look like with certain colours. Now, I'm by no means a great developer (I'm 16, but I know my way around javascript, flash and a bit of AS2) but I've taken notice of haXe recently and think it might be a good project to write in it and compile to a swf. I'm not sure if I should just use flash, or if I should use haXe. Is anybody able to iterate on the strengths and weaknesses of using haXe or flash please? Thanks in advance! P.S. I do have a copy of flash (supplied by school), so that doesn't concern me.

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• Java RegEx Pattern not matching (works in .NET)

  - by CDSO1

  Below is an example that is producing an exception in Java (and not matching the input). Perhaps I misunderstood the JavaDoc, but it looks like it should work. Using the same pattern and input in C# will produce a match. import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static void main(String[] args) { String pattern = "aspx\\?uid=([^']*)"; Pattern p = Pattern.compile(pattern); Matcher m = p.matcher("id='page.aspx?uid=123'"); System.out.println(m.groupCount() > 0 ? m.group(1) : "No Matches"); } }

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• Scala Programming for Android

  - by Lemmy

  I have followed the tutorial at Scala and Android with Scala 2.7.3 final. The resulting Android App works but even the most basic application takes several minutes (!) to compile and needs 900 kb compressed, which is a show stopper for mobile applications. Additionally, the IDE runs out of memory every now and then. I assume dex is not made for big libraries like the scala-library. So my question is: Has anyone actually done this and is there any cure for this?

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• Windows Media Center 6 Development on Vista

  - by Clever Human

  I have two development machines -- one is Windows 7, the other is Windows Vista. Depending on where I am in my house is which machine I use. I am writing a Windows Media Center 6 (which ships as part of Windows 7) application. I installed the WMC6 SDK on my Windows 7 machine with no issues. However, when I try and install it on my Vista machine, I am told the WMC6 SDK cannot be installed on Vista. So my questions are: How can I develop a WMC6 app on Vista? If I use the Vista version of the SDK (WMC5.3 SDK) will I be able to edit / compile and test the same application from each machine. I imagine the answer to the second question is "no" because the API changed between those two versions. So can I only work on this application from my Windows 7 machine? That really sucks if it is true!

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• What languages, preprocessors, and toolkits will Apple not allow you to develop iPhone OS 4.0 Apps w

  - by Tony Lambert

  According to articles on web Apple will not approve Apps that have code that is not originally developed in Objective C, C or C++. Found on the Web: 3.3.1 Applications may only use Documented APIs in the manner prescribed by Apple and must not use or call any private APIs. Applications must be originally written in Objective-C, C, C++, or JavaScript as executed by the iPhone OS WebKit engine, and only code written in C, C++, and Objective-C may compile and directly link against the Documented APIs (e.g., Applications that link to Documented APIs through an intermediary translation or compatibility layer or tool are prohibited). Can we build a list of things developer use that will and won't be allowed under these possible new rules? We can use: C, C++, Objective C We can't use: Flash, Monotouch C#, Pascal, Fortran, Perl, Python, Lex, Yacc, Unity (games engine), Java What others?

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• Can you exclude code automatically when using the publish feature in Visual Studio

  - by LarryDev

  Is their a way to exclude a block of code when you use the publish feature in visual studio. In other words say I had a log in button that did something like: // Start Exclude when publishing if (txtUserName.Text == "" && txtPassword.Password == "") { lp = new System.ServiceModel.DomainServices.Client.ApplicationServices.LoginParameters("UserName", "Password"); } else // Stop Exclude when publishing { lp = new System.ServiceModel.DomainServices.Client.ApplicationServices.LoginParameters(txtUserName.Text, txtPassword.Password); } This way when I am debugging I can just leave the username and password field blank and just click login and the application will log me on. But when the application is published the compiler woudl ignore that code and not compile it in to the application.

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• PATH and CLASSPATH in Windows7 7 / Eclipse

  - by Richard Knop

  So I would like to set PATH and CLASSPATH system variables so I can use javac and java commands in the command line. I can just compile and run java programs in eclipse but I would also like to be able to run them through command line. This is where I have Java installed: C:\Program Files (x86)\Java jdk1.6.0_20 jre6 And this is where eclipse stores my Java projects: D:\java-projects HelloWorld bin HelloWorld.class src HelloWorld.java I have set up the PATH and CLASSPATH variables like this: PATH: C:\Program Files (x86)\Java\jdk1.6.0_20\bin CLASSPATH: D:\java-projects But it doesn't work. When I write: java HelloWorld Or: java HelloWorld.class I get error like this: Exception in thread “main” java.lang.NoClassDefFoundError: HelloWorld The error is longer, that's just the first line. How can I fix this? I'm mainly interested to be able to run compiled .class programs from the command line, I can do compiling in the eclipse.

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