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• Flash receives mouse events under an HTML element when opacity set

  - by Török Gábor

  I have an HTML document with a Flash object and an absolutely positioned HTML element above it. If I set the HTML element's opacity CSS property to any value less than 1, the Flash object (that is actually covered) receives mouse events. This problem cannot be reproduced with pure HTML elements. Furthermore, Flash only receives hover events, so I cannot click below the layer. I put a demonstration of the problem online. I get this behavior in Firefox 3.6, Safari 4.0 and Chrome 5.0 in both Mac and Windows. Flash plugin version 10 is installed. Is it a bug or the the normal and expected behavior? If the latter, then how can I prevent Flash receiving events when it is covered with a translucent layer?

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• How to hide GetType() method from COM?

  - by ticky

  I made an automation Add-In for Excel, and I made several functions (formulas). I have a class which header looks like this (it is COM visible): [ClassInterface(ClassInterfaceType.AutoDual)] [ComVisible(true)] public class Functions {} In a list of methods, I see: ToString(), Equals(), GetHashCode() and GetType() methods. Since all methods of my class are COM visible, I should somehow hide those 4. I succeeded with 3 of them: ToString(), Equals(), GetHashCode() but GetType() cannot be overriden. Here is what I did with 3 of them: [ComVisible(false)] public override string ToString() { return base.ToString(); } [ComVisible(false)] public override bool Equals(object obj) { return base.Equals(obj); } [ComVisible(false)] public override int GetHashCode() { return base.GetHashCode(); } This doesn't work: [ComVisible(false)] public override Type GetType() { return base.GetType(); } Here is the error message in Visual Studio when compile: ..GetType()': cannot override inherited member 'object.GetType()' because it is not marked virtual, abstract, or override So, what should I do to hide the GetType() method from COM?

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• return value from ajax request to another function

  - by stormdrain

  I'm trying to return a value from (transport) to the calling function, but can't seem to get it to work: function createXMLHttpRequest( w ) { var urly = '/users/notes/' + w; var options = { method:'get' , onSuccess: function( transport ) { x = transport.responseText; return x; } , onFailure: function( transport ) { var response = transport.responseText; alert( "FAILED "+ response ); } }; new Ajax.Request( urly, options ); alert( x ); } var ai = $( 'addItem' ); ai.onclick = function() { // -1 indicates new addnote( -1, null ); } x always alerts undefined. Unless I assign x to the Ajax.Request e.g. x=new Ajax.Request(urly,options). It then will alert [Object object]. How can I return the value of transport.responseText to the onclick function?

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• Relying on nhibernate's second level cache vs pushing objects into the session

  - by AhmetC

  I have some big entities which are frequently accessed in the same session. For example, in my application there is a reporting page which consist of dynamically generated chart images. For each chart image on this page, the client makes requests to corresponding controller and the controller generates images using some entities. I can either use asp.net's session dictionary for "caching" those entities or rely on nhibernate's second level cache support with using cached queries for example. What is your opinion? By the way I will use shared hosting, is nhibernate's second level cache hosting friendly? Thanks.

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• Use ASP.Net server control code generation from .ashx

  - by Matt Dawdy

  I'm trying to take an existing bunch of code that was previously on a full .aspx page, and do the same stuff in a .ashx handler. The code created an HtmlTable object, added rows and cells to those rows, then added that html table the .aspx's controls collection, then added it to a div that was already on the page. I am trying to keep the code in tact but instead of putting the control into a div, actually generate the html and I'll return that in a big chunk of text that can be called via AJAX client-side. HtmlTable errors out when I try to use the InnerHtml property (says it isn't supported), and when I try RenderControl, after making first a TextWriter and next an HtmlTextWriter object, I get the error that Page cannot be null. Has anyone done this before? Any suggestions?

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• Mibble MIB Parser - extracting comments from the mib.

  - by this.matt

  I am using the Mibble MIB Parser to extract all simple data types from an MIB file. I've been successful until my attempt to extract comment text. Take the following module as an example: invBookList OBJECT-TYPE SYNTAX INTEGER { mobydick(1), -- call me ishmael paradiselost(2), -- aComment 1984(3), -- aComment solaris(4) -- aComment } MAX-ACCESS read-only STATUS current DESCRIPTION "A few Books for an example." ::= { invMasterList 43 } According to Mibble's API, the OBJECT-TYPE can be accessed by extracting an SnmpObjectType and then calling the appropriate getter method. Which I have done, and can successfully extract all of the text except the comments in the INTEGER syntax. I have tried calling getSyntax().getComment() on the SnmpObjectType, but always returns null. getSyntax() will extract the INTEGER syntax, e.g.: mobydick(1),paradiselist(2),1984(3),solaris(4) but unfortunately strips out the comments. Any one out there have experience with Mibble Parser who knows how to extract the comments? Many Thanks.

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• Error details in embedded IronPython

  - by Achim

  Hi, I'm executing IronPython in my application. A script produces an UnboundNameException with the message "name 'source' is not defined". Because the script is correct in my opinion I would need more error information, but I'm not able to get them from the exception. The exception itself seems not to contain any information about line number of the source of the exception or something like this. I searched on Google, but all available information seems to be outdated. The Data dictionary of my exception is empty which means that Data["PythonExceptionInfo"] does not exist. The file version of my IronPython assembly is 2.0.20209.0 Any hint how to get more error details? cheers, Achim

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• Getting weird python error when I run a simple django script in Eclipse, not happening in console

  - by Rhubarb

  I am running a basic script that sets up the django environment by itself, to enable me to test the ORM features of django without having to implement web pages. The script then imports one of the types defined in my models. This error doesn't happen when I run this script from iPython, only from eclipse. Simply doing this import causes a weird exception like the following: Exception AttributeError: "'NoneType' object has no attribute 'print_exc'" in <bound method Signal._remove_receiver of <django.dispatch.dispatcher.Signal object at 0x026802B0>> ignored My script is as follows: from django.core.management import setup_environ import settings setup_environ(settings) from stats.models import Person for p in Person.objects.all(): print p.Name

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• Mediaplayer control issue in asp.net application

  - by Geetha

  Hi All, I am using the following code to use mediaplayer in asp.net application. Need: I have set showcontrol=false. I want to display the window after the completion of the song. Code: <object id="mediaPlayer" classid="clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95" codebase="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=5,1,52,701" height="1" standby="Loading Microsoft Windows Media Player components..." type="application/x-oleobject" width="1"> <param name="fileName" value="" /> <param name="animationatStart" value="true" /> <param name="transparentatStart" value="true" /> <param name="autoStart" value="true" /> <param name="showControls" value="true" /> <param name="volume" value="100" /> <param name="loop" value="false" /> </object>

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• Set Dropdownlist value in listview on itemdatabound

  - by Samir

  hello, i have dropdownlist of year which is coming dynamically.i have filled the dropdownlist using object datasource.on inserting in the listview control it is working fine. but when i click on edit button that dropdownlist value should be set which is coming from the database. e.g. if i have a row which contains Year=2006 and month="Jan" then on click on edit button these dropdown list should be fill up. i have written the code in ItemDataBound to set the value of the dropdownlilst.but when i use findcontrol its taking null so object reference error is coming. so please provide me the solution. thanks samir

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• Unable to understand "A field initializer cannot reference the nonstatic field" Error?

  - by Subhen

  Hi, I am getting the error "A field initializer cannot reference the nonstatic field", While My code is as below: Object selectedItem = PageVariables.slectedItemData; MyClass selectedItems = (MyClass)selectedItem; But the same thing works if assign the value at the constructor or in a different method , like below: public partial class MusicPlayer : Page { Object selectedItem = PageVariables.slectedItemData; public MusicPlayer() { InitializeComponent(); MyClass selectedItems = (MyClass)selectedItem; } } I am just trying to understand what is the difference, Why it is looking for a static varaible declaration(in 1st case) while doesn't look for it while in a constructor or a different method!!!

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• COM/DCOM problem when hosting executable is run as a service

  - by Mitch

  I am struggling for days now with the following problem: We have an executable that hosts a COM server, say x.exe. The COM object is instantiated as follows on the calling site: hRes = CoCreateInstance(CLSID_InterceptX, NULL, CLSCTX_SERVER, IID_IInterceptX, (void**)&pInterceptX); It all works fine when x runs as an regular application. We have a tool (I don't know how it works) that encapsulates x.exe so that it runs as a service under Windows (x.exe is a running process). In this case, we never receive a COM call in x.exe (validated by logging). Here is the weird part: From logging the calling site, I can tell that the COM object has been successfully instantiated and also the call to an interface function does not produce an error (SUCEEDED(hres) is true). Any ideas?

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• CoffeeScript Class Properties Within Nested Anonymous Functions

  - by Aric

  I'm just taking a look at CoffeeScript for the first time so bare with me if this is a dumb question. I'm familiar with the hidden pattern methodology however I'm still wrapping my head around object prototypes. I'm trying to create a basic class for controlling a section on my site. The problem I'm running into is losing defined class variables within a different scope. For example, the code below works fine and creates the properties within the object perfectly. However when I jump into a jQuery callback I lose all knowledge of the class variables storing some of the jQuery objects for multiple uses. Is there a way to grab them from within the callback function? class Session initBinds: -> @loginForm.bind 'ajax:success', (data, status, xhr) -> console.log("processed") return @loginForm.bind 'ajax:before', (xhr, settings) -> console.log @loader // need access to Session.loader return return init: -> @loginForm = $("form#login-form") @loader = $("img#login-loader") this.initBinds() return

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• how to delete contents from plist programmatically ?

  - by srikanth rongali

  I have a plist file. I want to delete the data from the plist. How can I do it programmatically ? My Plist have an array cells. cells is filled by dictionaries . Each dictionary is filled by string. I used the following way. NSString* plistPath1 = [[NSBundle mainBundle] pathForResource:@"details" ofType:@"plist"]; [cells removeObjectAtIndex:[clickedButtonPath row]]; NSMutableArray *array1 = [[NSMutableArray alloc] initWithCapacity:4]; array1 = cells; [array1 writeToFile:plistPath1 atomically: YES]; But the plist is not taking the changes. Thank you.

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• Is this a violation of the single responsiblity principle?

  - by L. Moser

  I have the following method and interface: public object ProcessRules(List<IRule> rules) { foreach(IRule rule in rules) { if(EvaluateExpression(rule.Exp) == true) return rule.Result; } //Some error handling here for not hitting any rules } public interface IRule { Expression Exp; Object Result; int Precedence; } Because rules have a precedence, they should actually never be processed out of order. This leads me with (I think) three solutions: Sort rules before passing them into the evaluator. Change the parameter type to something that enforces a sort order. Sort within the evaluator. I like option 3 because it always ensures that it is sorted and I like option 1 because it seems more cohesive. And option 2 seems like a good compromise. Is a scenario like this context specific/subjective, or is there really a best practice to be applied here?

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• Converting mutable to immutable map

  - by Jeriho

  private[this]object MMMap extends HashMap[A, Set[B]] with MultiMap[A, B] How convert it to immutable?

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• DataTable.WriteXml on background thread

  - by Sheraz KHan

  I am trying to serealize DataTables in a background thread and it's failing. Any idea [Test] public void Async_Writing_DataTables() { string path = @"C:\Temp\SerialzeData"; if (!Directory.Exists(path)) { Directory.CreateDirectory(path); } Assert.IsTrue(Directory.Exists(path)); Thread thread1 = new Thread(new ThreadStart(delegate { object lockObject = new object(); for (int index = 0; index < 10; index++) { lock (lockObject) { DataTable table = new DataTable("test"); table.WriteXml(Path.Combine(path, table.TableName + index + ".xml")); } } })); thread1.Start(); }

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• Trying to build HipHop PHP Compiler on Ubuntu 9.10... Why does it get stuck?

  - by Alex R

  It seems to not get past this step: [ 16%] Building CXX object src/CMakeFiles/hphp_runtime_static.dir/lib/system/gen/sys/dynamic_table_func.no.cpp.o

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• PGU Tiles collision detection

  - by user280454

  Hi, I've been using PGU(Phil's Pygame Utilities) for a while. It has a dictionary called tdata, which is passed as an argument while loading tiles tdata = { tileno:(agroup, hit_handler, config)} I'm making a pacman clone in which I have 2 groups : player and ghost, for which I want to collision detection with the same type of tile. For example, if the tile no is 2, I want this tile to have agroups as both player and ghost. I tried doing the following: tdata = {0x02 :('player', tile_hit_1, config), 0x02 : ('ghost', tile_hit_2, config)} However, on doing this, it only gives collision detection for ghost, not the player. Any ideas on how I can do collision detection for both the player and the ghost with the same type of tile?

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• Scala method where type of second parameter equals part of generic type from first parameter

  - by ifischer

  I want to create a specific generic method in Scala. It takes two parameters. The first is of the type of a generic Java Interface (it's from the JPA criteria query). It currently looks like this: def genericFind(attribute:SingularAttribute[Person, _], value:Object) { ... } // The Java Interface which is the type of the first parameter in my find-method: public interface SingularAttribute<X, T> extends Attribute<X, T>, Bindable<T> Now i want to achieve the following: value is currently of type java.lang.Object. But I want to make it more specific. Value has to be the of the same type as the placeholder "_" from the first parameter (and so represents the "T" in the Java interface). Is that somehow possible, and how? BTW Sorry for the stupid question title (any suggestions?)

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• Scala 2.8 TreeMap and custom Ordering

  - by Dave

  I'm switching from scala 2.7 and ordered to scala 2.8 and using ordering. It looks quite straight forward but I was wondering could I make it a little less verbose. For example: scala> case class A(i: Int) defined class A scala> object A extends Ordering[A] { def compare(o1: A, o2: A) = o1.i - o2.i} defined module A If I then try to create a TreeMap I get an error scala> new collection.immutable.TreeMap[A, String]() <console>:10: error: could not find implicit value for parameter ordering: Ordering[A] new collection.immutable.TreeMap[A, String]() ^ However if I explicitly specify the object A as the ordering it works fine. scala> new collection.immutable.TreeMap[A, String]()(A) res34: scala.collection.immutable.TreeMap[A,String] = Map() Do I always have to explicitly specify the ordering or is there a shorter format? Thanks

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• Strategy Design Pattern -- *dynamic* !!!

  - by alexeypro

  My application will have different strategies for my objects. What's the best way of implementing that? I would really love the case when we can make strategy classes implementation dynamically loaded from, say, some relational database. Not sure how do that better, though. What's the best approach? Idea is that say we want to apply to object MyObj strategy Strategy123 then we just load from database by ID 123 the object, deserialize it, get the Strategy class, and use it with MyObj. The maintenance while sounds easier from the first look can be a pain in the long run if Strategy interfaces changes, etc. What can I do also? I want to find solution when I should be keeping Strategy classes in codebase -- just for the sake that I don't need code change and re-deployment of the application if my Strategy changes, or I add new strategy. Please advise!

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• Problem with stackless python, cannot write to a dict

  - by ANON

  I have simple map-reduce type algorithm, which I want to implement in python and make use of multiple cores. I read somewhere that threads using native thread module in 2.6 dont make use of multiple cores. is that true? I even implemented it using stackless python however i am getting into weird errors [Update: a quick search showed that the stack less does not allows multiple cores So are their any other alternatives?] def Propagate(start,end): print "running Thread with range: ",start,end def maxVote(nLabels): count = {} maxList = [] maxCount = 0 for nLabel in nLabels: if nLabel in count: count[nLabel] += 1 else: count[nLabel] = 1 #Check if the count is max if count[nLabel] > maxCount: maxCount = count[nLabel]; maxList = [nLabel,] elif count[nLabel]==maxCount: maxList.append(nLabel) return random.choice(maxList) for num in range(start,end): node=MapList[num] nLabels = [Label[k] for k in Adj[node]] if (nLabels!=[]): Label[node] = maxVote(nLabels) else: Label[node]=node However in above code the values assigned to Label, that is the change in dictionary are lost. Above propagate function is used as callable for MicroThreads (i.e. TaskLets)

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• iphone: how do I obtain a list of all files with a given extension on the app's document folder?

  - by Mike

  I have saved all my files using something like this NSString *fileName = [NSString stringWithFormat:@"%@.plist", myName]; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *appFile = [documentsDirectory stringByAppendingPathComponent:fileName]; [myDict writeToFile:appFile atomically:YES]) //where myDic is a dictionary containing the value of all parameters I would like to save. All these files were saved with the .plist extension. The same directory contains several JPG and PNG files. Now, how do I retrieve the list of all .plist files on that directory? thanks for any help.

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• MVVM User Control Issue

  - by Burt

  I have a problem with commands in an MVVM application (I am only learning MVVM so go easy). MyClassViewModel is set to the datacontext for MainForm1, MyList is bound to UserControl1 datacontext and each item in the list is represented by UserControl2. I am trying to fire MyCommand in UserControl2 using the following: <CheckBox IsChecked="{Binding MyBool}" Command="{Binding Path=MyCommand}" CommandParameter="{Binding}"> I get the following error in the output: System.Windows.Data Error: 39 : BindingExpression path error: 'MyCommand' property not found on 'object' ''MyObject'' From this error I know that WPF is looking for the command in the object bound to the UserControl2 what I really need is for it to look for the command in the MainForm1 datacontext (MyClassViewModel). Is it possible to bubble up commands like this and if so how is it done? Is bubbling up the command a good solution?

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