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• Ant build classpath jar generates "error in opening zip file"

  - by Uberpuppy

  I have a project built in eclipse with a dependencies on 3rd party jars. I'm trying to generate a suitable build file for ant - using eclipses built-in export-ant buildfile feature as a starting block. When I run the build target I get the following error: [javac] error: error reading /base/repo/FabTrace/lib/apache/geronimo/specs/geronimo-j2ee-management_1.0_spec/1.0/geronimo-j2ee-management_1.0_spec-1.0.jar; error in opening zip file And the whole build file (auto-generated by eclipse) looks like this: (NB: the error above always references the first jar listed in the classpath) <project basedir="." default="build" name="FabTrace"> <property environment="env"/> <property name="ECLIPSE_HOME" value="/opt/apps/eclipse"/> <property name="debuglevel" value="source,lines,vars"/> <property name="target" value="1.5"/> <property name="source" value="1.5"/> <path id="JUnit 4.libraryclasspath"> <pathelement location="${ECLIPSE_HOME}/plugins/org.junit4_4.5.0.v20090824/junit.jar"/> <pathelement location="${ECLIPSE_HOME}/plugins/org.hamcrest.core_1.1.0.v20090501071000.jar"/> </path> <path id="FabTrace.classpath"> <pathelement location="bin"/> <pathelement location="lib/apache/geronimo/specs/geronimo-j2ee-management_1.0_spec/1.0/geronimo-j2ee-management_1.0_spec-1.0.jar"/> <pathelement location="lib/apache/geronimo/specs/geronimo-jms_1.1_spec/1.0/geronimo-jms_1.1_spec-1.0.jar"/> <pathelement location="lib/commons-collections/commons-collections/3.2/commons-collections-3.2.jar"/> <pathelement location="lib/commons-io/commons-io/1.4/commons-io-1.4.jar"/> <pathelement location="lib/commons-lang/commons-lang/2.1/commons-lang-2.1.jar"/> <pathelement location="lib/commons-logging/commons-logging/1.1/commons-logging-1.1.jar"/> <pathelement location="lib/commons-logging/commons-logging-api/1.1/commons-logging-api-1.1.jar"/> <pathelement location="lib/javax/activation/activation/1.1/activation-1.1.jar"/> <pathelement location="lib/javax/jms/jms/1.1/jms-1.1.jar"/> <pathelement location="lib/javax/mail/mail/1.4/mail-1.4.jar"/> <pathelement location="lib/javax/xml/bind/jaxb-api/2.1/jaxb-api-2.1.jar"/> <pathelement location="lib/javax/xml/stream/stax-api/1.0-2/stax-api-1.0-2.jar"/> <pathelement location="lib/junit/junit/4.4/junit-4.4.jar"/> <pathelement location="lib/log4j/log4j/1.2.15/log4j-1.2.15.jar"/> <pathelement location="lib/apache/camel/camel-jms-2.0-M1.jar"/> <pathelement location="lib/spring/spring-2.5.6.jar"/> <pathelement location="lib/apache/camel/camel-bundle-2.0-M1.jar"/> <pathelement location="lib/backport-util-concurrent/backport-util-concurrent-3.1.jar"/> <pathelement location="lib/commons-pool/commons-pool-1.4.jar"/> <pathelement location="lib/apache/camel/camel-activemq-1.1.0.jar"/> <pathelement location="lib/apache/activemq/activemq-camel-5.2.0.jar"/> <pathelement location="lib/jencks/jencks-2.2-all.jar"/> <pathelement location="lib/jencks/jencks-amqpool-2.2.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/activemq-all-5.3.1.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/optional/xbean-spring-3.6.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/activemq-core-5.3.1.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/camel-jetty-2.2.0.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/web/jetty-6.1.9.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/web/jetty-util-6.1.9.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/web/jetty-xbean-6.1.9.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/optional/activemq-optional-5.3.1.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/web/geronimo-servlet_2.5_spec-1.2.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/optional/spring-beans-2.5.6.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/optional/spring-context-2.5.6.jar"/> <pathelement location="lib/activemq/apache-activemq-5.3.1/lib/optional/spring-core-2.5.6.jar"/> <path refid="JUnit 4.libraryclasspath"/> </path> <target name="init"> <mkdir dir="bin"/> <copy includeemptydirs="false" todir="bin"> <fileset dir="src/main/java"> <exclude name="**/*.launch"/> <exclude name="**/*.java"/> </fileset> </copy> <copy includeemptydirs="false" todir="bin"> <fileset dir="src/test/java"> <exclude name="**/*.launch"/> <exclude name="**/*.java"/> </fileset> </copy> <copy includeemptydirs="false" todir="bin"> <fileset dir="config"> <exclude name="**/*.launch"/> <exclude name="**/*.java"/> </fileset> </copy> </target> <target name="clean"> <delete dir="bin"/> </target> <target depends="clean" name="cleanall"/> <target depends="build-subprojects,build-project" name="build"/> <target name="build-subprojects"/> <target depends="init" name="build-project"> <echo message="${ant.project.name}: ${ant.file}"/> <javac debug="true" debuglevel="${debuglevel}" destdir="bin" source="${source}" target="${target}"> <src path="src/main/java"/> <classpath refid="FabTrace.classpath"/> </javac> <javac debug="true" debuglevel="${debuglevel}" destdir="bin" source="${source}" target="${target}"> <src path="src/test/java"/> <classpath refid="FabTrace.classpath"/> </javac> <javac debug="true" debuglevel="${debuglevel}" destdir="bin" source="${source}" target="${target}"> <src path="config"/> <classpath refid="FabTrace.classpath"/> </javac> </target> </project> (I know there's eclipse specific stuff in here. But I get the same results with or without it.) I've done ye old google search and trawled around without success. I can confirm that all the jars do really exist. I've also tried from the commandline and as sudo - again, same results. Any help would be greatly appreciated. Cheers

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• Using WeakReference to resolve issue with .NET unregistered event handlers causing memory leaks.

  - by Eric

  The problem: Registered event handlers create a reference from the event to the event handler's instance. If that instance fails to unregister the event handler (via Dispose, presumably), then the instance memory will not be freed by the garbage collector. Example: class Foo { public event Action AnEvent; public void DoEvent() { if (AnEvent != null) AnEvent(); } } class Bar { public Bar(Foo l) { l.AnEvent += l_AnEvent; } void l_AnEvent() { } } If I instantiate a Foo, and pass this to a new Bar constructor, then let go of the Bar object, it will not be freed by the garbage collector because of the AnEvent registration. I consider this a memory leak, and seems just like my old C++ days. I can, of course, make Bar IDisposable, unregister the event in the Dispose() method, and make sure to call Dispose() on instances of it, but why should I have to do this? I first question why events are implemented with strong references? Why not use weak references? An event is used to abstractly notify an object of changes in another object. It seems to me that if the event handler's instance is no longer in use (i.e., there are no non-event references to the object), then any events that it is registered with should automatically be unregistered. What am I missing? I have looked at WeakEventManager. Wow, what a pain. Not only is it very difficult to use, but its documentation is inadequate (see http://msdn.microsoft.com/en-us/library/system.windows.weakeventmanager.aspx -- noticing the "Notes to Inheritors" section that has 6 vaguely described bullets). I have seen other discussions in various places, but nothing I felt I could use. I propose a simpler solution based on WeakReference, as described here. My question is: Does this not meet the requirements with significantly less complexity? To use the solution, the above code is modified as follows: class Foo { public WeakReferenceEvent AnEvent = new WeakReferenceEvent(); internal void DoEvent() { AnEvent.Invoke(); } } class Bar { public Bar(Foo l) { l.AnEvent += l_AnEvent; } void l_AnEvent() { } } Notice two things: 1. The Foo class is modified in two ways: The event is replaced with an instance of WeakReferenceEvent, shown below; and the invocation of the event is changed. 2. The Bar class is UNCHANGED. No need to subclass WeakEventManager, implement IWeakEventListener, etc. OK, so on to the implementation of WeakReferenceEvent. This is shown here. Note that it uses the generic WeakReference that I borrowed from here: http://damieng.com/blog/2006/08/01/implementingweakreferencet I had to add Equals() and GetHashCode() to his class, which I include below for reference. class WeakReferenceEvent { public static WeakReferenceEvent operator +(WeakReferenceEvent wre, Action handler) { wre._delegates.Add(new WeakReference<Action>(handler)); return wre; } public static WeakReferenceEvent operator -(WeakReferenceEvent wre, Action handler) { foreach (var del in wre._delegates) if (del.Target == handler) { wre._delegates.Remove(del); return wre; } return wre; } HashSet<WeakReference<Action>> _delegates = new HashSet<WeakReference<Action>>(); internal void Invoke() { HashSet<WeakReference<Action>> toRemove = null; foreach (var del in _delegates) { if (del.IsAlive) del.Target(); else { if (toRemove == null) toRemove = new HashSet<WeakReference<Action>>(); toRemove.Add(del); } } if (toRemove != null) foreach (var del in toRemove) _delegates.Remove(del); } } public class WeakReference<T> : IDisposable { private GCHandle handle; private bool trackResurrection; public WeakReference(T target) : this(target, false) { } public WeakReference(T target, bool trackResurrection) { this.trackResurrection = trackResurrection; this.Target = target; } ~WeakReference() { Dispose(); } public void Dispose() { handle.Free(); GC.SuppressFinalize(this); } public virtual bool IsAlive { get { return (handle.Target != null); } } public virtual bool TrackResurrection { get { return this.trackResurrection; } } public virtual T Target { get { object o = handle.Target; if ((o == null) || (!(o is T))) return default(T); else return (T)o; } set { handle = GCHandle.Alloc(value, this.trackResurrection ? GCHandleType.WeakTrackResurrection : GCHandleType.Weak); } } public override bool Equals(object obj) { var other = obj as WeakReference<T>; return other != null && Target.Equals(other.Target); } public override int GetHashCode() { return Target.GetHashCode(); } } It's functionality is trivial. I override operator + and - to get the += and -= syntactic sugar matching events. These create WeakReferences to the Action delegate. This allows the garbage collector to free the event target object (Bar in this example) when nobody else is holding on to it. In the Invoke() method, simply run through the weak references and call their Target Action. If any dead (i.e., garbage collected) references are found, remove them from the list. Of course, this only works with delegates of type Action. I tried making this generic, but ran into the missing where T : delegate in C#! As an alternative, simply modify class WeakReferenceEvent to be a WeakReferenceEvent, and replace the Action with Action. Fix the compiler errors and you have a class that can be used like so: class Foo { public WeakReferenceEvent<int> AnEvent = new WeakReferenceEvent<int>(); internal void DoEvent() { AnEvent.Invoke(5); } } Hopefully this will help someone else when they run into the mystery .NET event memory leak!

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• What is the target color profile in Image.FromFile?

  - by Jan Zich

  I am curious what the useEmbeddedColorManagement parameter in System.Drawing.Image.FromFile actually does. This parameter directory corresponds to a GDI+ parameter in the same method of the same class. So debugging .NET source does not lead anywhere. If my understanding of color profiles is correct, a color profile is basically a mapping which describes how particular RGB triples (or CMYK or something else) map into the so called Profile Connection Space (CIELAB or CIEXYZ). Now, if I open an image with embedded color in .NET setting useEmbeddedColorManagement to true, my experience is I get an image whose RGB values are not exactly the same as the original values in the file, i.e. is transformed. Since the original image was an RGB and the new is also an RGB, there must have been a transformation from the embedded color profile to a Profile Connection Space and the back to RGB. The thing which I don’t understand is what is the target color system? Is it some default Windows color profile? Is the current monitor profile? Is it sRGB?

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• spring.net proxy factory with target type needs property virtual ?

  - by Vince

  Hi all, I'm creating spring.net proxy in code by using ProxyFactory object with ProxyTargetType to true to have a proxy on a non interfaced complex object. Proxying seems ok till i call a method on that object. The method references a public property and if this property is not virtual it's value is null. This doesn't happen if i use Spring.Aop.Framework.AutoProxy.InheritanceBasedAopConfigurer in spring config file but in this case i can't use this because spring context doesn't own this object. Is this normal to have such behavior or is there a tweak to perform what i want (proxying object virtual method without having to change properties virtual)? Note that i tried factory.AutoDetectInterfaces and factory.ProxyTargetAttributes values but doesn't help. My proxy creation code: public static T CreateMethodCallStatProxy<T>() { // Proxy factory ProxyFactory factory = new ProxyFactory(); factory.AddAdvice(new CallMonitorTrackerAdvice()); factory.ProxyTargetType = true; // Create instance factory.Target = Activator.CreateInstance<T>(); // Get proxy T proxiedClass = (T)factory.GetProxy(); return proxiedClass; } Thanks for your help

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• How do I target a div without a class or id but with all these specific style-attributes

  - by Ben

  I'm restyling a certain page where I don't have access to all the source-HTML. So I'm left over with some hard to target elements within a page I need removed. For example the page is swamped with <div style="float: left; width: 10.25px; height: 284px;"></div>. To get rid of them I tried this in CSS: div[style="float: left; width: 10.25px; height: 284px;"] { display:none !important; } I'd like to fix this using CSS, because the the HTML that needs to be removed is updated using ajax. How do I target a div without a class or id but with all these specific style-attributes? Some more of the source-code (took a while to organize the parsed source): <div> <span class="Block BigPhotoList_Block"> <span class="Photo BigPhotoList_Photo" style="height: 200px"> <a href="/Webwinkel-Product-83760187/Le-Coq-Sportif-Angers-Low.html.html"> <span style="background-image:url(http://61955.static.securearea.eu/Files/2/61000/61955/ProductPhotos/MaxContent/144036303.jpg);" class="Canvas BigPhotoList_Canvas" title="Le-Coq-Sportif-Angers-Low"></span> </a> </span> <span class="Title BigPhotoList_Title"> <a href="/Webwinkel-Product-83760187/Le-Coq-Sportif-Angers-Low.html.html"> Le Coq Sportif Angers Low </a> </span> <span class="Price BigPhotoList_Price" style="font-size: 120%;"> € 89,95 </span> </span> <div style="float: left; width: 10.25px; height: 284px; border-right: 1px dashed #A0A0A0;" class="BigPhotoList_Stippel"></div> <div style="float: left; width: 10.25px; height: 284px;"></div> <span class="Block BigPhotoList_Block"> <span class="Photo BigPhotoList_Photo" style="height: 200px"> <a href="/Webwinkel-Product-83760185/Le-Coq-Sportif-Auveurne-Low.html"> <span style="background-image:url(http://61955.static.securearea.eu/Files/2/61000/61955/ProductPhotos/MaxContent/144036301.jpg);" class="Canvas BigPhotoList_Canvas" title="Le-Coq-Sportif-Auveurne-Low"></span> </a> </span> <span class="Title BigPhotoList_Title"> <a href="/Webwinkel-Product-83760185/Le-Coq-Sportif-Auveurne-Low.html"> Le Coq Sportif Auveurne Low </a> </span> <span class="Price BigPhotoList_Price" style="font-size: 120%;"> € 79,95 </span> </span> <div style="float: left; width: 10.25px; height: 284px; border-right: 1px dashed #A0A0A0;" class="BigPhotoList_Stippel"></div> <div style="float: left; width: 10.25px; height: 284px;"></div> <span class="Block BigPhotoList_Block"> <span class="Photo BigPhotoList_Photo" style="height: 200px"> <a href="/Webwinkel-Product-83760191/Le-Coq-Sportif-Bordeaux-Low.html"> <span style="background-image:url(http://61955.static.securearea.eu/Files/2/61000/61955/ProductPhotos/MaxContent/144036307.jpg);" class="Canvas BigPhotoList_Canvas" title="Le-Coq-Sportif-Bordeaux-Low"></span> </a> </span> <span class="Title BigPhotoList_Title"> <a href="/Webwinkel-Product-83760191/Le-Coq-Sportif-Bordeaux-Low.html"> Le Coq Sportif Bordeaux Low </a> </span> <span class="Price BigPhotoList_Price" style="font-size: 120%;"> € 99,95 </span> </span> <span class="Block BigPhotoList_Block"> <span class="Photo BigPhotoList_Photo" style="height: 200px"> <a href="/Webwinkel-Product-83760181/Le-Coq-Sportif-Cannet-Low.html"> <span style="background-image:url(http://61955.static.securearea.eu/Files/2/61000/61955/ProductPhotos/MaxContent/144036297.jpg);" class="Canvas BigPhotoList_Canvas" title="Le-Coq-Sportif-Cannet-Low"></span> </a> </span> <span class="Title BigPhotoList_Title"> <a href="/Webwinkel-Product-83760181/Le-Coq-Sportif-Cannet-Low.html"> Le Coq Sportif Cannet Low </a> </span> <span class="Discount BigPhotoList_Discount" style="font-size: 120%;"> € 99,95 </span> <span class="Price BigPhotoList_Price" style="font-size: 120%;"> € 94,95 </span> </span> <div style="float: left; width: 10.25px; height: 284px; border-right: 1px dashed #A0A0A0;" class="BigPhotoList_Stippel"></div> <div style="float: left; width: 10.25px; height: 284px;"></div> <span class="Block BigPhotoList_Block"> <span class="Photo BigPhotoList_Photo" style="height: 200px"> <a href="/Webwinkel-Product-83760183/Le-Coq-Sportif-Rodez-Low.html"> <span style="background-image:url(http://61955.static.securearea.eu/Files/2/61000/61955/ProductPhotos/MaxContent/144036299.jpg);" class="Canvas BigPhotoList_Canvas" title="Le-Coq-Sportif-Rodez-Low"></span> </a> </span> <span class="Title BigPhotoList_Title"> <a href="/Webwinkel-Product-83760183/Le-Coq-Sportif-Rodez-Low.html"> Le Coq Sportif Rodez Low </a> </span> <span class="Price BigPhotoList_Price" style="font-size: 120%;"> € 99,95 </span> </span> <div style="float: left; width: 10.25px; height: 284px; border-right: 1px dashed #A0A0A0;" class="BigPhotoList_Stippel"></div> <div style="float: left; width: 10.25px; height: 284px;"></div> <span class="Block BigPhotoList_Block"> <span class="Photo BigPhotoList_Photo" style="height: 200px"> <a href="/Webwinkel-Product-83760189/Le-Coq-Sportif-Sedan-Low.html"> <span style="background-image:url(http://61955.static.securearea.eu/Files/2/61000/61955/ProductPhotos/MaxContent/144036305.jpg);" class="Canvas BigPhotoList_Canvas" title="Le-Coq-Sportif-Sedan-Low"></span> </a> </span> <span class="Title BigPhotoList_Title"> <a href="/Webwinkel-Product-83760189/Le-Coq-Sportif-Sedan-Low.html"> Le Coq Sportif Sedan Low </a> </span> <span class="Discount BigPhotoList_Discount" style="font-size: 120%;"> € 109,95 </span> <span class="Price BigPhotoList_Price" style="font-size: 120%;"> € 99,95 </span> </span> </div>

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• Setting CPU target to x86 on .NET 2.0 project adds .NET 3.5 dependencies.

  - by AngryHacker

  I have a project in VS2008 that targets .NET 2.0 framework. It was original set to build for AnyCPU. I changed it to x86 and for whatever reason, VS adds the following lines to .csproj: <ItemGroup> <BootstrapperPackage Include="Microsoft.Net.Client.3.5"> <Visible>False</Visible> <ProductName>.NET Framework Client Profile</ProductName> <Install>false</Install> </BootstrapperPackage> ... ... <BootstrapperPackage Include="Microsoft.Net.Framework.3.5.SP1"> <Visible>False</Visible> <ProductName>.NET Framework 3.5 SP1</ProductName> <Install>false</Install> </BootstrapperPackage> </ItemGroup> Can someone explain as to why this is being added and whether I can safely remove it, as I still have to target the .NET 2.0 framework. Thanks.

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• I want to create a simple function to reset all input values without target input. (Javascript, Jque

  - by question_about_the_problem

  Hi, I want to create a simple function to reset all input values without target input. I don't know how i can do it. Thanks. Here is my sample codes: <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script> function reset_other_inputs(room) { $("input[name^='check_in_date_']").each(function () { if ( $("input[name!='check_in_date_'+room]") ) { this.val(""); } }); $("input[name^='check_out_date_']").each(function () { if ( $("input[name!='check_out_date_'+room]") ) { this.val(""); } }); } </script> <input type="text" name="check_in_date_single" value="single" onClick="reset_other_inputs('single');"> <input type="text" name="check_out_date_single" value="single" onClick="reset_other_inputs('single');"> <input type="text" name="check_in_date_double" value="double" onClick="reset_other_inputs('double');"> <input type="text" name="check_out_date_double" value="double" onClick="reset_other_inputs('double');"> <input type="text" name="check_in_date_triple" value="triple" onClick="reset_other_inputs('triple');"> <input type="text" name="check_out_date_triple" value="triple" onClick="reset_other_inputs('triple');"> <input type="text" name="check_in_date_suite" value="suite" onClick="reset_other_inputs('suite');"> <input type="text" name="check_out_date_suite" value="suite" onClick="reset_other_inputs('suite');">

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• Clients not updating with approved updates from WSUS

  - by Ross

  Hi All, I've been a bit behind in my windows XP updates recently, and I have about 18 or so I need to roll out to all our users, according to WSUS. I'm trying it on a couple of test PCs, and so far i've had no luck. On each one, one update would install (and need a reboot), and nothing else since. When I run wuauclt.exe /detectnow, I get this in the windowsupdate.log: 2009-10-29 17:27:10:624 1128 93c AU Triggering AU detection through DetectNow API 2009-10-29 17:27:10:624 1128 93c AU Triggering Online detection (non-interactive) 2009-10-29 17:27:10:624 1128 504 AU ############# 2009-10-29 17:27:10:624 1128 504 AU ## START ## AU: Search for updates 2009-10-29 17:27:10:624 1128 504 AU ######### 2009-10-29 17:27:10:624 1128 504 AU <<## SUBMITTED ## AU: Search for updates [CallId = {59353978-CBA7-4B0B-AFD3-515577D3C16B}] 2009-10-29 17:27:10:624 1128 a14 Agent ************* 2009-10-29 17:27:10:624 1128 a14 Agent ** START ** Agent: Finding updates [CallerId = AutomaticUpdates] 2009-10-29 17:27:10:624 1128 a14 Agent ********* 2009-10-29 17:27:10:624 1128 a14 Agent * Online = Yes; Ignore download priority = No 2009-10-29 17:27:10:624 1128 a14 Agent * Criteria = "IsHidden=0 and IsInstalled=0 and DeploymentAction='Installation' and IsAssigned=1 or IsHidden=0 and IsPresent=1 and DeploymentAction='Uninstallation' and IsAssigned=1 or IsHidden=0 and IsInstalled=1 and DeploymentAction='Installation' and IsAssigned=1 and RebootRequired=1 or IsHidden=0 and IsInstalled=0 and DeploymentAction='Uninstallation' and IsAssigned=1 and RebootRequired=1" 2009-10-29 17:27:10:624 1128 a14 Agent * ServiceID = {3DA21691-E39D-4DA6-8A4B-B43877BCB1B7} 2009-10-29 17:27:10:624 1128 a14 Misc Validating signature for C:\WINDOWS\SoftwareDistribution\SelfUpdate\Default\wuident.cab: 2009-10-29 17:27:10:655 1128 a14 Misc Microsoft signed: Yes 2009-10-29 17:27:10:702 1128 a14 Misc Validating signature for C:\WINDOWS\SoftwareDistribution\SelfUpdate\Default\wuident.cab: 2009-10-29 17:27:10:702 1128 a14 Misc Microsoft signed: Yes 2009-10-29 17:27:10:780 1128 a14 Misc Validating signature for C:\WINDOWS\SoftwareDistribution\SelfUpdate\Default\wsus3setup.cab: 2009-10-29 17:27:10:780 1128 a14 Misc Microsoft signed: Yes 2009-10-29 17:27:10:796 1128 a14 Setup *********** Setup: Checking whether self-update is required *********** 2009-10-29 17:27:10:796 1128 a14 Setup * Inf file: C:\WINDOWS\SoftwareDistribution\SelfUpdate\Default\wsus3setup.inf 2009-10-29 17:27:10:796 1128 a14 Setup Update NOT required for C:\WINDOWS\system32\cdm.dll: target version = 7.1.6001.65, required version = 7.1.6001.65 2009-10-29 17:27:10:796 1128 a14 Setup Update NOT required for C:\WINDOWS\system32\wuapi.dll: target version = 7.1.6001.65, required version = 7.1.6001.65 2009-10-29 17:27:10:796 1128 a14 Setup Update NOT required for C:\WINDOWS\system32\wuapi.dll.mui: target version = 7.1.6001.65, required version = 7.1.6001.65 2009-10-29 17:27:10:796 1128 a14 Setup Update NOT required for C:\WINDOWS\system32\wuauclt.exe: target version = 7.1.6001.65, required version = 7.1.6001.65 2009-10-29 17:27:10:874 1128 a14 Setup Update NOT required for C:\WINDOWS\system32\wuaucpl.cpl: target version = 7.1.6001.65, required version = 7.1.6001.65 2009-10-29 17:27:10:874 1128 a14 Setup Update NOT required for C:\WINDOWS\system32\wuaucpl.cpl.mui: target version = 7.1.6001.65, required version = 7.1.6001.65 2009-10-29 17:27:10:874 1128 a14 Setup Update NOT required for C:\WINDOWS\system32\wuaueng.dll: target version = 7.1.6001.65, required version = 7.1.6001.65 2009-10-29 17:27:10:874 1128 a14 Setup Update NOT required for C:\WINDOWS\system32\wuaueng.dll.mui: target version = 7.1.6001.65, required version = 7.1.6001.65 2009-10-29 17:27:10:874 1128 a14 Setup Update NOT required for C:\WINDOWS\system32\wucltui.dll: target version = 7.1.6001.65, required version = 7.1.6001.65 2009-10-29 17:27:10:874 1128 a14 Setup Update NOT required for C:\WINDOWS\system32\wucltui.dll.mui: target version = 7.1.6001.65, required version = 7.1.6001.65 2009-10-29 17:27:10:874 1128 a14 Setup Update NOT required for C:\WINDOWS\system32\wups.dll: target version = 7.1.6001.65, required version = 7.1.6001.65 2009-10-29 17:27:10:874 1128 a14 Setup Update NOT required for C:\WINDOWS\system32\wups2.dll: target version = 7.1.6001.65, required version = 7.1.6001.65 2009-10-29 17:27:10:874 1128 a14 Setup Update NOT required for C:\WINDOWS\system32\wuweb.dll: target version = 7.1.6001.65, required version = 7.1.6001.65 2009-10-29 17:27:10:874 1128 a14 Setup * IsUpdateRequired = No 2009-10-29 17:27:17:468 1128 a14 PT +++++++++++ PT: Synchronizing server updates +++++++++++ 2009-10-29 17:27:17:468 1128 a14 PT + ServiceId = {3DA21691-E39D-4DA6-8A4B-B43877BCB1B7}, Server URL = hxxp://dublindc2/ClientWebService/client.asmx 2009-10-29 17:27:55:157 1128 a14 Agent * Found 0 updates and 46 categories in search; evaluated appl. rules of 478 out of 678 deployed entities 2009-10-29 17:27:55:173 1128 a14 Agent ********* 2009-10-29 17:27:55:173 1128 a14 Agent ** END ** Agent: Finding updates [CallerId = AutomaticUpdates] 2009-10-29 17:27:55:173 1128 a14 Agent ************* 2009-10-29 17:27:55:189 1128 f1c AU >>## RESUMED ## AU: Search for updates [CallId = {59353978-CBA7-4B0B-AFD3-515577D3C16B}] 2009-10-29 17:27:55:189 1128 f1c AU # 0 updates detected 2009-10-29 17:27:55:189 1128 f1c AU ######### 2009-10-29 17:27:55:189 1128 f1c AU ## END ## AU: Search for updates [CallId = {59353978-CBA7-4B0B-AFD3-515577D3C16B}] 2009-10-29 17:27:55:189 1128 f1c AU ############# 2009-10-29 17:27:55:189 1128 f1c AU AU setting next detection timeout to 2009-10-29 21:01:30 2009-10-29 17:27:55:189 1128 f1c AU Setting AU scheduled install time to 2009-10-30 13:00:00 2009-10-29 17:27:55:251 1128 a14 Report Uploading 2 events using cached cookie, reporting URL = hxxp://dublindc2/ReportingWebService/ReportingWebService.asmx 2009-10-29 17:27:55:267 1128 a14 Report Reporter successfully uploaded 2 events. 2009-10-29 17:28:00:173 1128 a14 Report REPORT EVENT: {BD891590-784B-4001-8116-D83962DAB749} 2009-10-29 17:27:55:173-0000 1 147 101 {00000000-0000-0000-0000-000000000000} 0 0 AutomaticUpdates Success Software Synchronization Windows Update Client successfully detected 0 updates. 2009-10-29 17:28:00:173 1128 a14 Report REPORT EVENT: {E578C377-5E09-4F4C-AB28-FE5131E2D6A7} 2009-10-29 17:27:55:173-0000 1 I've tried deleting everything in the C:\Windows\SoftwareDistribution, stopping the services, rebooting etc. Can anyone decipher the log to see where it's going wrong? Many thanks!

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• Ubuntu cannot access internet, LAN is fine

  - by Kevin Southworth

  I have an Ubuntu 8.04 LTS server that is directly connected to our Comcast Business Gateway modem and I have configured it with 1 of our 5 allotted Static IPs. My other machines on our LAN can connect to this server (via ssh, web, ping, etc.) but I cannot access this server from outside our network, and this machine cannot get out to the internet either (ping google.com fails with unknown host). Here is my /etc/networking/interfaces file: auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 173.162.54.19 netmask 255.255.255.248 broadcast 173.162.54.23 gateway 173.162.54.22 and my /etc/resolv.conf: nameserver 68.87.77.130 nameserver 68.87.72.130 output from sudo route -n: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 173.162.54.16 0.0.0.0 255.255.255.248 U 0 0 0 eth0 0.0.0.0 173.162.54.22 0.0.0.0 UG 100 0 0 eth0 I have a Windows 2008 machine with an almost identical Static IP, static DNS setup and it works correctly, can access it within the LAN and also from public internet, the Windows machine and the Ubuntu machine are both directly connected to the Comcast Business Gateway. I have tried rebooting Ubuntu, rebooting my Comcast modem, but nothing seems to make it work. I'm an Ubuntu noob, is there some other config I need to apply to make this work? UPDATE: Yes I am able to ping my default gateway 173.162.54.22 output of iptables --list -n: Chain INPUT (policy DROP) target prot opt source destination ufw-before-input all -- 0.0.0.0/0 0.0.0.0/0 ufw-after-input all -- 0.0.0.0/0 0.0.0.0/0 Chain FORWARD (policy DROP) target prot opt source destination ufw-before-forward all -- 0.0.0.0/0 0.0.0.0/0 ufw-after-forward all -- 0.0.0.0/0 0.0.0.0/0 Chain OUTPUT (policy ACCEPT) target prot opt source destination ufw-before-output all -- 0.0.0.0/0 0.0.0.0/0 ufw-after-output all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-after-forward (1 references) target prot opt source destination LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 10 LOG flags 0 level 4 prefix `[UFW BLOCK FORWARD]: ' RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-after-input (1 references) target prot opt source destination RETURN udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:137 RETURN udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:138 RETURN tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:139 RETURN tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:445 RETURN udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:67 RETURN udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:68 LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 10 LOG flags 0 level 4 prefix `[UFW BLOCK INPUT]: ' RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-after-output (1 references) target prot opt source destination RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-before-forward (1 references) target prot opt source destination ufw-user-forward all -- 0.0.0.0/0 0.0.0.0/0 RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-before-input (1 references) target prot opt source destination ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED DROP all -- 0.0.0.0/0 0.0.0.0/0 ctstate INVALID ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 3 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 4 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 11 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 12 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 8 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp spt:67 dpt:68 ufw-not-local all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT all -- 224.0.0.0/4 0.0.0.0/0 ACCEPT all -- 0.0.0.0/0 224.0.0.0/4 ufw-user-input all -- 0.0.0.0/0 0.0.0.0/0 RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-before-output (1 references) target prot opt source destination ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW,RELATED,ESTABLISHED ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW,RELATED,ESTABLISHED ufw-user-output all -- 0.0.0.0/0 0.0.0.0/0 RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-not-local (1 references) target prot opt source destination RETURN all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type LOCAL RETURN all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type MULTICAST RETURN all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type BROADCAST LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 10 LOG flags 0 level 4 prefix `[UFW BLOCK NOT-TO-ME]: ' DROP all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-user-forward (1 references) target prot opt source destination RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-user-input (1 references) target prot opt source destination ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:80 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:22 RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-user-output (1 references) target prot opt source destination RETURN all -- 0.0.0.0/0 0.0.0.0/0

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• Custom Gesture in cocos2d

  - by Lewis

  I've found a little tutorial that would be useful for my game: http://blog.mellenthin.de/archives/2012/02/13/an-one-finger-rotation-gesture-recognizer/ But I can't work out how to convert that gesture to work with cocos2d, I have found examples of pre made gestures in cocos2d, but no custom ones, is it possible? EDIT STILL HAVING PROBLEMS WITH THIS: I've added the code from Sentinel below (from SO), the Gesture and RotateGesture have both been added to my solution and are compiling. Although In the rotation class now I only see selectors, how do I set those up? As the custom gesture found in that project above looks like: header file for custom gesture: #import <Foundation/Foundation.h> #import <UIKit/UIGestureRecognizerSubclass.h> @protocol OneFingerRotationGestureRecognizerDelegate <NSObject> @optional - (void) rotation: (CGFloat) angle; - (void) finalAngle: (CGFloat) angle; @end @interface OneFingerRotationGestureRecognizer : UIGestureRecognizer { CGPoint midPoint; CGFloat innerRadius; CGFloat outerRadius; CGFloat cumulatedAngle; id <OneFingerRotationGestureRecognizerDelegate> target; } - (id) initWithMidPoint: (CGPoint) midPoint innerRadius: (CGFloat) innerRadius outerRadius: (CGFloat) outerRadius target: (id) target; - (void)reset; - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event; - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event; - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event; - (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event; @end .m for custom gesture file: #include <math.h> #import "OneFingerRotationGestureRecognizer.h" @implementation OneFingerRotationGestureRecognizer // private helper functions CGFloat distanceBetweenPoints(CGPoint point1, CGPoint point2); CGFloat angleBetweenLinesInDegrees(CGPoint beginLineA, CGPoint endLineA, CGPoint beginLineB, CGPoint endLineB); - (id) initWithMidPoint: (CGPoint) _midPoint innerRadius: (CGFloat) _innerRadius outerRadius: (CGFloat) _outerRadius target: (id <OneFingerRotationGestureRecognizerDelegate>) _target { if ((self = [super initWithTarget: _target action: nil])) { midPoint = _midPoint; innerRadius = _innerRadius; outerRadius = _outerRadius; target = _target; } return self; } /** Calculates the distance between point1 and point 2. */ CGFloat distanceBetweenPoints(CGPoint point1, CGPoint point2) { CGFloat dx = point1.x - point2.x; CGFloat dy = point1.y - point2.y; return sqrt(dx*dx + dy*dy); } CGFloat angleBetweenLinesInDegrees(CGPoint beginLineA, CGPoint endLineA, CGPoint beginLineB, CGPoint endLineB) { CGFloat a = endLineA.x - beginLineA.x; CGFloat b = endLineA.y - beginLineA.y; CGFloat c = endLineB.x - beginLineB.x; CGFloat d = endLineB.y - beginLineB.y; CGFloat atanA = atan2(a, b); CGFloat atanB = atan2(c, d); // convert radiants to degrees return (atanA - atanB) * 180 / M_PI; } #pragma mark - UIGestureRecognizer implementation - (void)reset { [super reset]; cumulatedAngle = 0; } - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { [super touchesBegan:touches withEvent:event]; if ([touches count] != 1) { self.state = UIGestureRecognizerStateFailed; return; } } - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { [super touchesMoved:touches withEvent:event]; if (self.state == UIGestureRecognizerStateFailed) return; CGPoint nowPoint = [[touches anyObject] locationInView: self.view]; CGPoint prevPoint = [[touches anyObject] previousLocationInView: self.view]; // make sure the new point is within the area CGFloat distance = distanceBetweenPoints(midPoint, nowPoint); if ( innerRadius <= distance && distance <= outerRadius) { // calculate rotation angle between two points CGFloat angle = angleBetweenLinesInDegrees(midPoint, prevPoint, midPoint, nowPoint); // fix value, if the 12 o'clock position is between prevPoint and nowPoint if (angle > 180) { angle -= 360; } else if (angle < -180) { angle += 360; } // sum up single steps cumulatedAngle += angle; // call delegate if ([target respondsToSelector: @selector(rotation:)]) { [target rotation:angle]; } } else { // finger moved outside the area self.state = UIGestureRecognizerStateFailed; } } - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { [super touchesEnded:touches withEvent:event]; if (self.state == UIGestureRecognizerStatePossible) { self.state = UIGestureRecognizerStateRecognized; if ([target respondsToSelector: @selector(finalAngle:)]) { [target finalAngle:cumulatedAngle]; } } else { self.state = UIGestureRecognizerStateFailed; } cumulatedAngle = 0; } - (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event { [super touchesCancelled:touches withEvent:event]; self.state = UIGestureRecognizerStateFailed; cumulatedAngle = 0; } @end Then its initialised like this: // calculate center and radius of the control CGPoint midPoint = CGPointMake(image.frame.origin.x + image.frame.size.width / 2, image.frame.origin.y + image.frame.size.height / 2); CGFloat outRadius = image.frame.size.width / 2; // outRadius / 3 is arbitrary, just choose something >> 0 to avoid strange // effects when touching the control near of it's center gestureRecognizer = [[OneFingerRotationGestureRecognizer alloc] initWithMidPoint: midPoint innerRadius: outRadius / 3 outerRadius: outRadius target: self]; [self.view addGestureRecognizer: gestureRecognizer]; The selector below is also in the same file where the initialisation of the gestureRecogonizer: - (void) rotation: (CGFloat) angle { // calculate rotation angle imageAngle += angle; if (imageAngle > 360) imageAngle -= 360; else if (imageAngle < -360) imageAngle += 360; // rotate image and update text field image.transform = CGAffineTransformMakeRotation(imageAngle * M_PI / 180); [self updateTextDisplay]; } I can't seem to get this working in the RotateGesture class can anyone help me please I've been stuck on this for days now. SECOND EDIT: Here is the users code from SO that was suggested to me: Here is projec on GitHub: SFGestureRecognizers It uses builded in iOS UIGestureRecognizer, and don't needs to be integrated into cocos2d sources. Using it, You can make any gestures, just like you could, if you whould work with UIGestureRecognizer. For example: I made a base class Gesture, and subclassed it for any new gesture: //Gesture.h @interface Gesture : NSObject <UIGestureRecognizerDelegate> { UIGestureRecognizer *gestureRecognizer; id delegate; SEL preSolveSelector; SEL possibleSelector; SEL beganSelector; SEL changedSelector; SEL endedSelector; SEL cancelledSelector; SEL failedSelector; BOOL preSolveAvailable; CCNode *owner; } - (id)init; - (void)addGestureRecognizerToNode:(CCNode*)node; - (void)removeGestureRecognizerFromNode:(CCNode*)node; -(void)recognizer:(UIGestureRecognizer*)recognizer; @end //Gesture.m #import "Gesture.h" @implementation Gesture - (id)init { if (!(self = [super init])) return self; preSolveAvailable = YES; return self; } - (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer { return YES; } - (BOOL)gestureRecognizer:(UIGestureRecognizer *)recognizer shouldReceiveTouch:(UITouch *)touch { //! For swipe gesture recognizer we want it to be executed only if it occurs on the main layer, not any of the subnodes ( main layer is higher in hierarchy than children so it will be receiving touch by default ) if ([recognizer class] == [UISwipeGestureRecognizer class]) { CGPoint pt = [touch locationInView:touch.view]; pt = [[CCDirector sharedDirector] convertToGL:pt]; for (CCNode *child in owner.children) { if ([child isNodeInTreeTouched:pt]) { return NO; } } } return YES; } - (void)addGestureRecognizerToNode:(CCNode*)node { [node addGestureRecognizer:gestureRecognizer]; owner = node; } - (void)removeGestureRecognizerFromNode:(CCNode*)node { [node removeGestureRecognizer:gestureRecognizer]; } #pragma mark - Private methods -(void)recognizer:(UIGestureRecognizer*)recognizer { CCNode *node = recognizer.node; if (preSolveSelector && preSolveAvailable) { preSolveAvailable = NO; [delegate performSelector:preSolveSelector withObject:recognizer withObject:node]; } UIGestureRecognizerState state = [recognizer state]; if (state == UIGestureRecognizerStatePossible && possibleSelector) { [delegate performSelector:possibleSelector withObject:recognizer withObject:node]; } else if (state == UIGestureRecognizerStateBegan && beganSelector) [delegate performSelector:beganSelector withObject:recognizer withObject:node]; else if (state == UIGestureRecognizerStateChanged && changedSelector) [delegate performSelector:changedSelector withObject:recognizer withObject:node]; else if (state == UIGestureRecognizerStateEnded && endedSelector) { preSolveAvailable = YES; [delegate performSelector:endedSelector withObject:recognizer withObject:node]; } else if (state == UIGestureRecognizerStateCancelled && cancelledSelector) { preSolveAvailable = YES; [delegate performSelector:cancelledSelector withObject:recognizer withObject:node]; } else if (state == UIGestureRecognizerStateFailed && failedSelector) { preSolveAvailable = YES; [delegate performSelector:failedSelector withObject:recognizer withObject:node]; } } @end Subclass example: //RotateGesture.h #import "Gesture.h" @interface RotateGesture : Gesture - (id)initWithTarget:(id)target preSolveSelector:(SEL)preSolve possibleSelector:(SEL)possible beganSelector:(SEL)began changedSelector:(SEL)changed endedSelector:(SEL)ended cancelledSelector:(SEL)cancelled failedSelector:(SEL)failed; @end //RotateGesture.m #import "RotateGesture.h" @implementation RotateGesture - (id)initWithTarget:(id)target preSolveSelector:(SEL)preSolve possibleSelector:(SEL)possible beganSelector:(SEL)began changedSelector:(SEL)changed endedSelector:(SEL)ended cancelledSelector:(SEL)cancelled failedSelector:(SEL)failed { if (!(self = [super init])) return self; preSolveSelector = preSolve; delegate = target; possibleSelector = possible; beganSelector = began; changedSelector = changed; endedSelector = ended; cancelledSelector = cancelled; failedSelector = failed; gestureRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(recognizer:)]; gestureRecognizer.delegate = self; return self; } @end Use example: - (void)addRotateGesture { RotateGesture *rotateRecognizer = [[RotateGesture alloc] initWithTarget:self preSolveSelector:@selector(rotateGesturePreSolveWithRecognizer:node:) possibleSelector:nil beganSelector:@selector(rotateGestureStateBeganWithRecognizer:node:) changedSelector:@selector(rotateGestureStateChangedWithRecognizer:node:) endedSelector:@selector(rotateGestureStateEndedWithRecognizer:node:) cancelledSelector:@selector(rotateGestureStateCancelledWithRecognizer:node:) failedSelector:@selector(rotateGestureStateFailedWithRecognizer:node:)]; [rotateRecognizer addGestureRecognizerToNode:movableAreaSprite]; } I dont understand how to implement the custom gesture code at the start of this post into the rotateGesture class which is a subclass of the gesture class written by the SO user. Any ideas please? When I get 6 more rep I'll add a bounty to this.

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• What's the use of Ant's extension-point if/unless attributes?

  - by Robert Menteer

  When you define an extension-point in an Ant build file you can have it conditional by using the if or unless attribute. On a target the if/unless prevent it's tasks from being run. But an extension-point doesn't have any tasks to conditionally run, so what does the condition do? My thought (which proved to be incorrect in Ant 1.8.0) is it would prevent any tasks that extend the extension-point from being run. Here is an example build script showing the problem: <project name = "ext-test" default = "main"> <property name = "do.it" value = "false" /> <extension-point name = "init"/> <extension-point name = "doit" depends = "init" if = "${do.it}" /> <target name = "extend-init" extensionOf = "init"> <echo message = "Doing extend-init." /> </target> <target name = "extend-doit" extensionOf = "doit"> <echo message = "Do It! (${do.it})" /> </target> <target name = "main" depends = "doit"> <echo message = "Doing main." /> </target> </project> Using the command: ant -v Relults in: Apache Ant version 1.8.0 compiled on February 1 2010 Trying the default build file: build.xml Buildfile: /Users/bob/build.xml Detected Java version: 1.6 in: /System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home Detected OS: Mac OS X parsing buildfile /Users/bob/build.xml with URI = file:/Users/bob/build.xml Project base dir set to: /Users/bob parsing buildfile jar:file:/Users/bob/Documents/Development/3P-Tools/apache-ant-1.8.0/lib/ant.jar!/org/apache/tools/ant/antlib.xml with URI = jar:file:/Users/bob/Documents/Development/3P-Tools/apache-ant-1.8.0/lib/ant.jar!/org/apache/tools/ant/antlib.xml from a zip file Build sequence for target(s) `main' is [extend-init, init, extend-doit, doit, main] Complete build sequence is [extend-init, init, extend-doit, doit, main, ] extend-init: [echo] Doing extend-init. init: extend-doit: [echo] Do It! (false) doit: Skipped because property 'false' not set. main: [echo] Doing main. BUILD SUCCESSFUL Total time: 0 seconds You will notice the target extend-doit is executed but the extention-point itself is skipped. Since an extention-point doesn't have any tasks exactly what has been skipped? Any targets that depend on the extention-point still get executed since a skipped target is a successful target. What is the value of the if/unless attributes on an extention-point?

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• Calling a function that resides in the main page from a plugin?

  - by Justin Lee

  I want to call a function from within plugin, but the function is on the main page and not the plugin's .js file. EDIT I have jQuery parsing a very large XML file and building, subsequently, a large list (1.1 MB HTML file when dynamic content is copied, pasted, then saved) that has expand/collapse functionality through a plugin. The overall performance on IE is super slow and doggy, assuming since the page/DOM is so big. I am currently trying to save the collapsed content in the event.data when it is collapsed and remove it from the DOM, then bring it back when it is told to expand... the issue that I am having is that when I bring the content back, obviously the "click" and "hover" events are gone. I'm trying to re-assign them, currently doing so inside the plugin after the plugin expands the content. The issue then though is that is says the function that I declare within the .click() is not defined. Also the hover event doesn't seem to be re-assigning either.... if ($(event.data.trigger).attr('class').indexOf('collapsed') != -1 ) { // if expanding // console.log(event.data.targetContent); $(event.data.trigger).after(event.data.targetContent); $(event.data.target).hide(); /* This Line --->*/ $(event.data.target + 'a.addButton').click(addResourceToList); $(event.data.target + 'li.resource') .hover( function() { if (!($(this).attr("disabled"))) { $(this).addClass("over"); $(this).find("a").css({'display':'block'}); } }, function () { if (!($(this).attr("disabled"))) { $(this).removeClass("over"); $(this).children("a").css({'display':'none'}); } } ); $(event.data.target).css({ "height": "0px", "padding-top": "0px", "padding-bottom": "0px", "margin-top": "0px", "margin-bottom": "0px"}); $(event.data.target).show(); $(event.data.target).animate({ height: event.data.heightVal + "px", paddingTop: event.data.topPaddingVal + "px", paddingBottom: event.data.bottomPaddingVal + "px", marginTop: event.data.topMarginVal + "px", marginBottom: event.data.bottomMarginVal + "px"}, "normal");//, function(){$(this).hide();}); $(event.data.trigger).removeClass("collapsed"); $.cookies.set('jcollapserSub_' + event.data.target, 'expanded', {hoursToLive: 24 * 365}); } else if ($(event.data.trigger).attr('class').indexOf('collapsed') == -1 ) { // if collapsing $(event.data.target).animate({ height: "0px", paddingTop: "0px", paddingBottom: "0px", marginTop: "0px", marginBottom: "0px"}, "normal", function(){$(this).hide();$(this).remove();}); $(event.data.trigger).addClass("collapsed"); $.cookies.set('jcollapserSub_' + event.data.target, 'collapsed', {hoursToLive: 24 * 365}); } EDIT So, having new eyes truly makes a difference. As I was reviewing the code in this post this morning after being away over the weekend, I found where I had err'd. This: $(event.data.target + 'a.addButton').click(addResourceToList); Should be this (notice the space before a.addbutton): $(event.data.target + ' a.addButton').click(addResourceToList); Same issue with the "li.resource". So it was never pointing to the right elements... Thank you, Rene, for your help!!

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• xna orbit camera troubles

  - by user17753

  I have a Model named cube to which I load in LoadContent(): cube = Content.Load<Model>("untitled");. In the Draw Method I call DrawModel: private void DrawModel(Model m, Matrix world) { foreach (ModelMesh mesh in m.Meshes) { foreach (BasicEffect effect in mesh.Effects) { effect.EnableDefaultLighting(); effect.View = camera.View; effect.Projection = camera.Projection; effect.World = world; } mesh.Draw(); } } camera is of the Camera type, a class I've setup. Right now it is instantiated in the initialization section with the graphics aspect ratio and the translation (world) vector of the model, and the Draw loop calls the camera.UpdateCamera(); before drawing the models. class Camera { #region Fields private Matrix view; // View Matrix for Camera private Matrix projection; // Projection Matrix for Camera private Vector3 position; // Position of Camera private Vector3 target; // Point camera is "aimed" at private float aspectRatio; //Aspect Ratio for projection private float speed; //Speed of camera private Vector3 camup = Vector3.Up; #endregion #region Accessors /// <summary> /// View Matrix of the Camera -- Read Only /// </summary> public Matrix View { get { return view; } } /// <summary> /// Projection Matrix of the Camera -- Read Only /// </summary> public Matrix Projection { get { return projection; } } #endregion /// <summary> /// Creates a new Camera. /// </summary> /// <param name="AspectRatio">Aspect Ratio to use for the projection.</param> /// <param name="Position">Target coord to aim camera at.</param> public Camera(float AspectRatio, Vector3 Target) { target = Target; aspectRatio = AspectRatio; ResetCamera(); } private void Rotate(Vector3 Axis, float Amount) { position = Vector3.Transform(position - target, Matrix.CreateFromAxisAngle(Axis, Amount)) + target; } /// <summary> /// Resets Default Values of the Camera /// </summary> private void ResetCamera() { speed = 0.05f; position = target + new Vector3(0f, 20f, 20f); projection = Matrix.CreatePerspectiveFieldOfView(MathHelper.PiOver4, aspectRatio, 0.5f, 100f); CalculateViewMatrix(); } /// <summary> /// Updates the Camera. Should be first thing done in Draw loop /// </summary> public void UpdateCamera() { Rotate(Vector3.Right, speed); CalculateViewMatrix(); } /// <summary> /// Calculates the View Matrix for the camera /// </summary> private void CalculateViewMatrix() { view = Matrix.CreateLookAt(position,target, camup); } I'm trying to create the camera so that it can orbit the center of the model. For a test I am calling Rotate(Vector3.Right, speed); but it rotates almost right but gets to a point where it "flips." If I rotate along a different axis Rotate(Vector3.Up, speed); everything seems OK in that direction. So I guess, can someone tell me what I'm not accounting for in the above code I wrote? Or point me to an example of an orbiting camera that can be fixed on an arbitrary point?

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• VRF Internet Gateway Multiple External IP's 1 Internal IP to AWS

  - by user223903

  Trying to setup VRF for the first time and its not working for me even though I keep reading everything online. IP's are different to real life. I have an Internet connection which I can ping to my router in the current setup below 195.45.73.22 I have a block of ip addresses 195.45.121.0/27 I want to setup multiple VPN's to AWS so need to have multiple external ip's thus the block of IP addresses. I have setup the 2nd and 3rd IP address but can not ping them from external. Any help would be grateful. Bryan ip source-route ! ip vrf Internet rd 1:1 route-target export 1:1 route-target import 1:1 ip vrf AWSSydney1 rd 2:2 route-target export 2:2 route-target import 2:2 route-target import 1:1 ip vrf AWSSydney2 rd 3:3 route-target export 3:3 route-target import 3:3 route-target import 1:1 ip cef no ip domain lookup no ipv6 cef multilink bundle-name authenticated interface FastEthernet0/0 description Vocus Internet no ip address speed 100 full-duplex interface FastEthernet0/0.1 encapsulation dot1Q 1 native ip address 195.45.73.22 255.255.255.252 interface FastEthernet0/0.2 encapsulation dot1Q 2 ip vrf forwarding AWSSydney1 ip address 195.45.121.1 255.255.255.224 interface FastEthernet0/0.3 encapsulation dot1Q 3 ip vrf forwarding AWSSydney2 ip address 195.45.121.2 255.255.255.224 interface FastEthernet0/1 description LAN_SIDE ip address 10.0.0.5 255.255.255.0 speed 100 full-duplex no mop enabled ip forward-protocol nd ip route 0.0.0.0 0.0.0.0 195.45.73.21 ip route vrf Internet 0.0.0.0 0.0.0.0 195.45.73.21

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• Routing in Php and decorator pattern

  - by Joey Salac Hipolito

  I do not know if I am using the term 'routing' correctly, but here is the situation: I created an .htaccess file to 'process' (dunno if my term is right) the url of my application, like this : RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(.+)$ index.php?url=$1 [QSA,L] Now I have this : http://appname/controller/method/parameter http://appname/$url[0]/$url[1]/$url[2] What I did is: setup a default controller, in case it is not specified in the url setup a Controller wrapper I did it like this $target = new $url[0]() $controller = new Controller($target) The problem with that one is that I can't use the methods in the object I passed in the constructor of the Controller: I resolved it like this : class Controller { protected $target; protected $view; public function __construct($target, $view) { $this->target = $target; $this->view = $view; } public function __call($method, $arguments) { if (method_exists($this->target, $method)) { return call_user_func_array(array($this->target, $method), $arguments); } } } This is working fine, the problem occurs in the index where I did the routing, here it is if(isset($url[2])){ if(method_exists($controller, $url[1])){ $controller->$url[1]($url[2]) } } else { if(method_exists($controller, $url[1])){ $controller->$url[1]() } } where $controller = new Controller($target) The problem is that the method doesn't exist, although I can use it directly without checking if method exist, how can I resolve this?

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• C# 4.0 'dynamic' doesn't set ref/out arguments

  - by Buu Nguyen

  I'm experimenting with DynamicObject. One of the things I try to do is setting the values of ref/out arguments, as shown in the code below. However, I am not able to have the values of i and j in Main() set properly (even though they are set correctly in TryInvokeMember()). Does anyone know how to call a DynamicObject object with ref/out arguments and be able to retrieve the values set inside the method? class Program { static void Main(string[] args) { dynamic proxy = new Proxy(new Target()); int i = 10; int j = 20; proxy.Wrap(ref i, ref j); Console.WriteLine(i + ":" + j); // Print "10:20" while expect "20:10" } } class Proxy : DynamicObject { private readonly Target target; public Proxy(Target target) { this.target = target; } public override bool TryInvokeMember(InvokeMemberBinder binder, object[] args, out object result) { int i = (int) args[0]; int j = (int) args[1]; target.Swap(ref i, ref j); args[0] = i; args[1] = j; result = null; return true; } } class Target { public void Swap(ref int i, ref int j) { int tmp = i; i = j; j = tmp; } }

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• Building InstallShield based Installers using Team Build 2010

  - by jehan

  Last few weeks, I have been working on Application Packaging stuff using all the widely used tools like InstallShield, WISE, WiX and Visual Studio Installer. So, I thought it would be good to post about how to Build the Installers developed using these tools with Team Build 2010. This post will focus on how to build the InstallShield generated packages using Team Build 2010. For the release of VS2010, Microsoft has partnered with Flexera who are the makers of InstallShield to create InstallShield Limited Edition, especially for the customers of Visual Studio. First Microsoft planned to release WiX (Windows Installer Xml) with VS2010, but later Microsoft dropped  WiX from VS2010 due to reasons which are best known to them and partnered with InstallShield for Limited Edition. It disappointed lot of people because InstallShield Limited Edition provides only few features of InstallShield and it may not feasable to build complex installer packages using this and it also requires License, where as WiX is an open source with no license costs and it has proved efficient in building most complex packages. Only the last three features are available in InstallShield Limited Edition from the total features offered by InstallShield as shown in below list.                                                                                            Feature Limited Edition for Visual Studio 2010 Standalone Build System Maintain a clean build machine by using only the part of InstallShield that compiles the installations. InstallShield Best Practices Validation Suite Avoid common installation issues. Try and Die Functionality RCreate a fully functional trial version of your product. InstallShield Repackager Create Windows Installer setups from any legacy installation. Multilingual Support Present installation text in up to 35 languages. Microsoft App-V™ Support Deploy your applications as App-V virtual packages that run without conflict. Industry-Standard InstallScript Achieve maximum flexibility in your installations. Dialog Editor Modify the layout of existing end-user dialogs, create new custom dialogs, and more. Patch Creation Build updates and patches for your products. Setup Prerequisite Editor Easily control prerequisite restart behavior and source locations. String Editor View Control the localizable text strings displayed at run time with this spreadsheet-like table. Text File Changes View Configure search-and-replace actions for content in text files to be modified at run time. Virtual Machine Detection Block your installations from running on virtual machines. Unicode Support Improve multi-language installation development. Support for 64-Bit COM Extraction Extract COM data from a 64-bit COM server. Windows Installer Installation Chaining Add MSI packages to your main installation and chain them together. XML Support Save time by quickly testing XML configuration changes to installation projects. Billboard Support for Custom Branding Display Adobe Flash billboards and other graphic files during the install process. SaaS Support (IIS 7 and SSL Technologies) Easily deploy Windows-based Web applications. Project Assistant Jumpstart a project by using a simplified set of views. Support for Digital Signatures Save time by digitally signing all your files at build time. Easily Run Custom Actions Schedule a custom action to run at precisely the right moment in your installation. Installation Prerequisites Check for and install prerequisites before your installation is executed. To create a InstallShield project in Visual Studio and Build it using Team Build 2010, first you have to add the InstallShield Project template  to your Solution file. If you want to use InstallShield Limited edition you can add it from FileàNewà project àother Project Types àSetup and Deploymentà InstallShield LE and if you are using other versions of InstallShield, then you have to add it from  from FileàNewà project àInstallShield Projects. Here, I’m using  InstallShield 2011 Premier edition as I already have it Installed. I have created a simple package for TailSpin Application which has a Feature called Web, few components and a IIS Web Site for  TailSpin application.   Before started working on this, I thought I may need to build the package by calling invoke process activity in build process template or have to create a new custom activity. But, it got build without any changes to build process template. But, it was failing with below error message. C:\Program Files (x86)\MSBuild\InstallShield\2011\InstallShield.targets (68): The "InstallShield.Tasks.InstallShield" task could not be loaded from the assembly C:\Program Files (x86)\MSBuild\InstallShield\2010Limited\InstallShield.Tasks.dll. Could not load file or assembly 'file:///C:\Program Files(x86)\MSBuild\InstallShield\2011\InstallShield.Tasks.dll' or one of its dependencies. An attempt was made to load a program with an incorrect format. Confirm that the <UsingTask> declaration is correct, that the assembly and all its dependencies are available, and that the task contains a public class that implements Microsoft.Build.Framework.ITask. This error is due to 64-bit build machine which I’m using. This issue will be replicable if you are queuing a build on a 64-bit build machine. To avoid this you have to ensure that you configured the build definition for your InstallShield project to load the InstallShield.Tasks.dll file (which is a 32-bit file); otherwise, you will encounter this build error informing you that the InstallShield.Tasks.dll file could not be loaded. To select the 32-bit version of MSBuild, click the Process tab of your build definition in Team Explorer. Then, under the Advanced node, find the MSBuild Platform setting, and select x86. Note that if you are using a 32-bit build machine, you can select either Auto or x86 for the MSBuild Platform setting.  Once I did above changes, the build got successful.

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• obj-c classes and sub classes (Cocos2d) conversion

  - by Lewis

  Hi I'm using this version of cocos2d: https://github.com/krzysztofzablocki/CCNode-SFGestureRecognizers Which supports the UIGestureRecognizer within a CCLayer in a cocos2d scene like so: @interface HelloWorldLayer : CCLayer <UIGestureRecognizerDelegate> { } Now I want to make this custom gesture work within the scene, attaching it to a sprite in cocos2d: #import <Foundation/Foundation.h> #import <UIKit/UIGestureRecognizerSubclass.h> @protocol OneFingerRotationGestureRecognizerDelegate <NSObject> @optional - (void) rotation: (CGFloat) angle; - (void) finalAngle: (CGFloat) angle; @end @interface OneFingerRotationGestureRecognizer : UIGestureRecognizer { CGPoint midPoint; CGFloat innerRadius; CGFloat outerRadius; CGFloat cumulatedAngle; id <OneFingerRotationGestureRecognizerDelegate> target; } - (id) initWithMidPoint: (CGPoint) midPoint innerRadius: (CGFloat) innerRadius outerRadius: (CGFloat) outerRadius target: (id) target; - (void)reset; - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event; - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event; - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event; - (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event; @end #include <math.h> #import "OneFingerRotationGestureRecognizer.h" @implementation OneFingerRotationGestureRecognizer // private helper functions CGFloat distanceBetweenPoints(CGPoint point1, CGPoint point2); CGFloat angleBetweenLinesInDegrees(CGPoint beginLineA, CGPoint endLineA, CGPoint beginLineB, CGPoint endLineB); - (id) initWithMidPoint: (CGPoint) _midPoint innerRadius: (CGFloat) _innerRadius outerRadius: (CGFloat) _outerRadius target: (id <OneFingerRotationGestureRecognizerDelegate>) _target { if ((self = [super initWithTarget: _target action: nil])) { midPoint = _midPoint; innerRadius = _innerRadius; outerRadius = _outerRadius; target = _target; } return self; } /** Calculates the distance between point1 and point 2. */ CGFloat distanceBetweenPoints(CGPoint point1, CGPoint point2) { CGFloat dx = point1.x - point2.x; CGFloat dy = point1.y - point2.y; return sqrt(dx*dx + dy*dy); } CGFloat angleBetweenLinesInDegrees(CGPoint beginLineA, CGPoint endLineA, CGPoint beginLineB, CGPoint endLineB) { CGFloat a = endLineA.x - beginLineA.x; CGFloat b = endLineA.y - beginLineA.y; CGFloat c = endLineB.x - beginLineB.x; CGFloat d = endLineB.y - beginLineB.y; CGFloat atanA = atan2(a, b); CGFloat atanB = atan2(c, d); // convert radiants to degrees return (atanA - atanB) * 180 / M_PI; } #pragma mark - UIGestureRecognizer implementation - (void)reset { [super reset]; cumulatedAngle = 0; } - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { [super touchesBegan:touches withEvent:event]; if ([touches count] != 1) { self.state = UIGestureRecognizerStateFailed; return; } } - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { [super touchesMoved:touches withEvent:event]; if (self.state == UIGestureRecognizerStateFailed) return; CGPoint nowPoint = [[touches anyObject] locationInView: self.view]; CGPoint prevPoint = [[touches anyObject] previousLocationInView: self.view]; // make sure the new point is within the area CGFloat distance = distanceBetweenPoints(midPoint, nowPoint); if ( innerRadius <= distance && distance <= outerRadius) { // calculate rotation angle between two points CGFloat angle = angleBetweenLinesInDegrees(midPoint, prevPoint, midPoint, nowPoint); // fix value, if the 12 o'clock position is between prevPoint and nowPoint if (angle > 180) { angle -= 360; } else if (angle < -180) { angle += 360; } // sum up single steps cumulatedAngle += angle; // call delegate if ([target respondsToSelector: @selector(rotation:)]) { [target rotation:angle]; } } else { // finger moved outside the area self.state = UIGestureRecognizerStateFailed; } } - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { [super touchesEnded:touches withEvent:event]; if (self.state == UIGestureRecognizerStatePossible) { self.state = UIGestureRecognizerStateRecognized; if ([target respondsToSelector: @selector(finalAngle:)]) { [target finalAngle:cumulatedAngle]; } } else { self.state = UIGestureRecognizerStateFailed; } cumulatedAngle = 0; } - (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event { [super touchesCancelled:touches withEvent:event]; self.state = UIGestureRecognizerStateFailed; cumulatedAngle = 0; } @end Header file for view controller: #import "OneFingerRotationGestureRecognizer.h" @interface OneFingerRotationGestureViewController : UIViewController <OneFingerRotationGestureRecognizerDelegate> @property (nonatomic, strong) IBOutlet UIImageView *image; @property (nonatomic, strong) IBOutlet UITextField *textDisplay; @end then this is in the .m file: gestureRecognizer = [[OneFingerRotationGestureRecognizer alloc] initWithMidPoint: midPoint innerRadius: outRadius / 3 outerRadius: outRadius target: self]; [self.view addGestureRecognizer: gestureRecognizer]; Now my question is, is it possible to add this custom gesture into the cocos2d project found on that github, and if so, what do I need to change in the OneFingerRotationGestureRecognizerDelegate to get it to work within cocos2d. Because at the minute it is setup in a standard iOS project and not a cocos2d project and I do not know enough about UIViews and classing/ sub classing in obj-c to get this to work. Also it seems to inherit from a UIView where cocos2d uses CCLayer. Kind regards, Lewis. I also realise I may have not included enough code from the custom gesture project for readers to interpret it fully, so the full project can be found here: https://github.com/melle/OneFingerRotationGestureDemo

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• Is it normal to these Xcode prompts/errors when you deploy to IOS Simulator from Unity?

  - by Greg

  Just trying out the IOS build process.... Is it normal to see: Q1 - "upgrade to latest project format - project currently in Xcode 3.1 format, this will upgrade to 3.2" - just click OK and let Xcode do it's stuff? Q2 - same as Q1 but this time for the message "Remove obsolete build settings - will remove the build setting PREBINDING" Q3 - also when deploying to "Lastest IOS Simulator" you get the Simulator target produced, but also a non-simulator target which has lots of errors. So I assume you just ignore this target and not use it in Xcode correct? (i.e. just use the simulator target that is produced) Q4 - get a lot of warning after the simulator target is built? program works ok however.... Images For Q1 and Q2: For Q4: Settings used in Unity: Errors I see in XCode:

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• write to depth buffer while using multiple render targets

  - by DocSeuss

  Presently my engine is set up to use deferred shading. My pixel shader output struct is as follows: struct GBuffer { float4 Depth : DEPTH0; //depth render target float4 Normal : COLOR0; //normal render target float4 Diffuse : COLOR1; //diffuse render target float4 Specular : COLOR2; //specular render target }; This works fine for flat surfaces, but I'm trying to implement relief mapping which requires me to manually write to the depth buffer to get correct silhouettes. MSDN suggests doing what I'm already doing to output to my depth render target - however, this has no impact on z culling. I think it might be because XNA uses a different depth buffer for every RenderTarget2D. How can I address these depth buffers from the pixel shader?

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• Avoiding orbiting in pursuit steering behavior

  - by bobobobo

  I have a missile that does pursuit behavior to track (and try and impact) its (stationary) target. It works fine as long as you are not strafing when you launch the missile. If you are strafing, the missile tends to orbit its target. I fixed this by accelerating tangentially to the target first, killing the tangential component of the velocity first, then beelining for the target. So I accelerate in -vT until vT is nearly 0. Then accelerate in the direction of vN. While that works, I'm looking for a more elegant solution where the missile is able to impact the target without explicitly killing the tangential component first.

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• Touching a CGRect

  - by Coder404

  In my cocos2d app I am trying to determine when a CCSprite is touched Here is what I have: -(BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event{ NSMutableArray *targetsToDelete = [[NSMutableArray alloc] init]; for (CCSprite *target in _targets) { CGRect targetRect = CGRectMake(target.position.x - (target.contentSize.width/2), target.position.y - (target.contentSize.height/2), 27, 40); CGPoint touchLocation = [self convertTouchToNodeSpace:touch]; if (CGRectContainsPoint(targetRect, touchLocation)) { NSLog(@"Moo cheese!"); } } return YES; } For some reason it does not work. Can someone help me?

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• How do I implement a remove by index method for a singly linked list in Java?

  - by Lars Flyger

  Hi, I'm a student in a programming class, and I need some help with this code I've written. So far I've written an entire linked list class (seen below), yet for some reason the "removeByIndex" method won't work. I can't seem to figure out why, the logic seems sound to me. Is there some problem I don't know about? public class List<T> { //private sub-class Link private class Link { private T value; private Link next; //constructors of Link: public Link (T val) { this.value = val; this.next = null; } public Link (T val, Link next) { this.value = val; this.next = next; } @SuppressWarnings("unused") public T getValue() { return value; } } private static final Exception NoSuchElementException = null; private static final Exception IndexOutOfBoundsException = null; private Link chain = null; //constructors of List: public List() { this.chain = null; } //methods of List: /** * Preconditions: none * Postconditions: returns true if list is empty */ public boolean isEmpty() { return this.chain == null; } /** * Preconditions: none * Postconditions: A new Link is added via add-aux * @param element */ public void add(T element) { this.add_aux(element, this.chain); } /** * Preconditions: none * Postconditions: A new Link is added to the current chain * @param element * @param chain */ private void add_aux(T element, Link chain) { if (chain == null) { //if chain is null set chain to a new Link with a value of //element this.chain = new Link(element); } else if (chain.next != null) { //if chain.next is not null, go to next item in chain and //try //to add element add_aux(element, chain.next); } else { //if chain.next is null, set chain.next equal to a new Link //with value of element. chain.next = new Link(element); } } /** * Preconditions: none * Postconditions: returns the link at the defined index via nthlink_aux * @param index * @return */ private Link nthLink (int index) { return nthLink_aux(index, this.chain); } /** * Preconditions: none * Postconditions: returns the link at the defined index in the specified *chain * @param i * @param c * @return */ private Link nthLink_aux (int i, Link c) { if (i == 0) { return c; } else return nthLink_aux(i-1, c.next); } /** * Preconditions: the specified element is present in the list * Postconditions: the specified element is removed from the list * @param element * @throws Exception */ public void removeElement(T element) throws Exception { if (chain == null) { throw NoSuchElementException; } //while chain's next is not null and the value of chain.next is not //equal to element, //set chain equal to chain.next //use this iteration to go through the linked list. else while ((chain.next != null) && !(chain.next.value.equals(element))){ Link testlink = chain.next; if (testlink.next.value.equals(element)) { //if chain.next is equal to element, bypass the //element. chain.next.next = chain.next.next.next; } else if (testlink.next == null) { throw NoSuchElementException; } } } /** * Preconditions: none * Postsconditions: the Link at the specified index is removed * @param index * @throws Exception */ public void removeByIndex(int index) throws Exception { if (index == 0) { //if index is 0, set chain equal to chain.next chain = chain.next; } else if (index > 0) { Link target = nthLink(index); while (target != null) { if (target.next != null) { target = target.next; } //if target.next is null, set target to null else { target = null; } } return; } else throw IndexOutOfBoundsException; } /** * Preconditions: none * Postconditions: the specified link's value is printed * @param link */ public void printLink (Link link) { if(link != null) { System.out.println(link.value.toString()); } } /** * Preconditions: none * Postconditions: all of the links' values in the list are printed. */ public void print() { //copy chain to a new variable Link head = this.chain; //while head is not null while (!(head == null)) { //print the current link this.printLink(head); //set head equal to the next link head = head.next; } } /** * Preconditions: none * Postconditions: The chain is set to null */ public void clear() { this.chain = null; } /** * Preconditions: none * Postconditions: Places the defined link at the defined index of the list * @param index * @param val */ public void splice(int index, T val) { //create a new link with value equal to val Link spliced = new Link(val); if (index <= 0) { //copy chain Link copy = chain; //set chain equal to spliced chain = spliced; //set chain.next equal to copy chain.next = copy; } else if (index > 0) { //create a target link equal to the link before the index Link target = nthLink(index - 1); //set the target's next equal to a new link with a next //equal to the target's old next target.next = new Link(val, target.next); } } /** * Preconditions: none * Postconditions: Check to see if element is in the list, returns true * if it is and false if it isn't * @param element * @return */ public boolean Search(T element) { if (chain == null) { //return false if chain is null return false; } //while chain's next is not null and the value of chain.next is not //equal to element, //set chain equal to chain.next //use this iteration to go through the linked list. else while ((chain.next != null) && !(chain.next.value.equals(element))) { Link testlink = chain.next; if (testlink.next.value.equals(element)) { //if chain.next is equal to element, return true return true; } else if (testlink.next == null) { return false; } } return false; } /** * Preconditions: none * Postconditions: order of the links in the list is reversed. */ public void reverse() { //copy chain Link current = chain; //set chain equal to null chain = null; while (current != null) { Link save = current; current = current.next; save.next = chain; chain = save; } } }'

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• Building a specific piece of Android platform?

  - by Chrisc

  Hi, I have been trying to build only the "/libcore" directory of the Android platform. When I try mmm libcore I end up with the following output: ============================================ PLATFORM_VERSION_CODENAME=REL PLATFORM_VERSION=2.1-update1 TARGET_PRODUCT=generic TARGET_BUILD_VARIANT=eng TARGET_SIMULATOR=false TARGET_BUILD_TYPE=release TARGET_ARCH=arm HOST_ARCH=x86 HOST_OS=linux HOST_BUILD_TYPE=release BUILD_ID=ECLAIR ============================================ make: Entering directory `/home/chris/android/platform' target Prebuilt: (out/target/product/generic/system/etc/security/cacerts.bks) host Prebuilt: run-core-tests-on-ri (out/host/linux-x86/obj/EXECUTABLES/run-core-tests-on-ri_intermediates/run-core-tests-on-ri) target Prebuilt: run-core-tests (out/target/product/generic/obj/EXECUTABLES/run-core-tests_intermediates/run-core-tests) Copy: out/target/product/generic/system/etc/apns-conf.xml Copying: out/target/common/obj/JAVA_LIBRARIES/core_intermediates/classes-full-debug.jar Copying: out/target/common/obj/JAVA_LIBRARIES/core-tests_intermediates/classes-full-debug.jar /bin/bash: jar: command not found make: *** [out/host/common/core-tests.jar] Error 127 make: *** Deleting file `out/host/common/core-tests.jar' make: Leaving directory `/home/chris/android/platform' Does anyone have any suggestions on what Error 127 is, or another method I can go about building "libcore" without having to build the entire platform again? Thanks, Chris

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• whats the diference between train, validation and test set, in neural networks?

  - by Daniel

  Im using this library http://pastebin.com/raw.php?i=aMtVv4RZ to implement a learning agent. I have generated the train cases, but i dont know for sure what are the validation and test sets, the teacher says: 70% should be train cases, 10% will be test cases and the rest 20% should be validation cases. Thanks. edit i have this code, for training.. but i have no ideia when to stop training.. def train(self, train, validation, N=0.3, M=0.1): # N: learning rate # M: momentum factor accuracy = list() while(True): error = 0.0 for p in train: input, target = p self.update(input) error = error + self.backPropagate(target, N, M) print "validation" total = 0 for p in validation: input, target = p output = self.update(input) total += sum([abs(target - output) for target, output in zip(target, output)]) #calculates sum of absolute diference between target and output accuracy.append(total) print min(accuracy) print sum(accuracy[-5:])/5 #if i % 100 == 0: print 'error %-14f' % error if ? < ?: break

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