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  • What is sender?

    - by marty
    I can't find this answer anywhere. What does it mean when there's a sender parameter in a method header? Does it represent the instance that called it, or the method that called it?

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  • Cannot use ternary operator in LINQ query

    - by Nissan Fan
    I can't figure out why I get a Object reference not set to an instance of an object. error if I use a ternary operator in my LINQ query. var courses = from d in somesource orderby d.SourceName, d.SourceType select new { ID = d.InternalCode, Name = string.Format("{0} - {1}{2}", d.InternalCode, d.SourceName, (d.SourceType.Length > 0 ? ", " + d.SourceType : string.Empty)) }; Any thoughts?

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  • C# - Does foreach() iterate by reference?

    - by sharkin
    Consider this: List<MyClass> obj_list = get_the_list(); foreach( MyClass obj in obj_list ) { obj.property = 42; } Is 'obj' a reference to the corresponding object within the list so that when I change the property the change will persist in the object instance once constructed somewhere?

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  • How to get the type of the class for comparison

    - by Halo
    I have this object which is an instance of a superclass. I want to know which subclass that object really is, so that I can decide what to do with it. There is this getClass() method but it's apparently not used for comparison issues. How can I get the sub-type of my object?

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  • example for Singleton pattern

    - by JavaUser
    Hi, Please give me a real time example for singleton pattern . Different threads accessing a shared file is singleton or not ? Since each thread access the same instance of the file not individual instances of their own .

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  • How to load an external swf to the main stage from an instanced child class?

    - by RaamEE
    Hi, I am trying to get an instance of a class to the load an external swf and show it. So far I have the following: 1) I wrote a class that uses the Loader class to load an external swf "loadExtSWF". 2) I have a fla named "MainSWF.fla" that uses a document class "MainSWF.as". 3) I have the MainSWF.as file that instances "loadExtSWF" and calls loadExtSWF.startLoad to load the swf. This almost works. The instance of loadExtSWF loads the external swf, but the swf is not displayed. If I replace the fla's document class with loadExtSWF (this has an empty constructor) instead of MainSWF, and run loadExtSWF.startLoad, then the external swf is loaded and displayed. It seems that the way I initially do it, loads the swf to the wrong stage (?). Any ideas? Thanks for the help. Bye, RaamEE P.S. If you replace the document class for test_tsscreen from test_tsscreen.as to TSScreen.as, and remove the comment inside the test_tsscreen's constructor, the swf will be loaded. my code is: file test_as3.swf an external as3 swf file. file test_tsscreen.fla the fla is empty and references test_tsscreen.as as its document class. file test_tsscreen.as package { import flash.display.MovieClip; import TSScreen; public class test_tsscreen extends MovieClip{ var tsScreen1; public function test_tsscreen(){ // var tsScreen1:TSScreen = new TSScreen(10,10,100,100,0.5,0); var tsScreen1:TSScreen = new TSScreen(); tsScreen1.startLoad(this.stage); } } } file TSScreen.as package { import flash.display.MovieClip; import flash.display.*; import flash.net.URLRequest; import flash.system.ApplicationDomain; import flash.system.LoaderContext; import flash.display.Loader; import flash.events.Event; import flash.events.ProgressEvent; public class TSScreen extends MovieClip implements ITSScreenable{ public function TSScreen():void{ // startLoad(this); //Look important comment in above text } function startLoad(_this:Stage) { var mLoader:Loader = new Loader(); var mRequest:URLRequest = new URLRequest("test_as3.swf"); mLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, onCompleteHandler); mLoader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, onProgressHandler); _this.parent.addChild(mLoader); mLoader.load(mRequest); trace(this.name); trace(_this.name); } function onCompleteHandler(loadEvent:Event) { addChild(loadEvent.currentTarget.content); } function onProgressHandler(mProgress:ProgressEvent) { var percent:Number = mProgress.bytesLoaded/mProgress.bytesTotal; trace(percent); } } }

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  • How do I set a static bool in another app domain?

    - by Martin
    How do I programatically set the value of a static boolean in another app domain? I'm testing an application where I need to change a bool value. Problem is that the bool value exists as a static instance on a type hosted in another app domain. (I'm doing this for test purposes, it won't be used in production code)

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  • Does a syntax for this exist? In any language?

    - by Michael
    It seems pretty common to me to have an argument, in a dynamically typed language that is either an Object or a key to lookup that object. For instance when I'm working with a database I might have a method getMyRelatedStuff(person) All I really need to lookup the related stuff is the id of the person so my method could look like this in python: def getMyRelatedStuff(person_or_id): id = person_or_id.id if isinstance(person,User) else person_or_id #do some lookup Or going the other direction: def someFileStuff(file_or_name): file = file_or_name if hasattr(file,'write') else open(file_or_name)

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  • Saving a grails object with a composite id

    - by Jared
    The answer to this may be obvious but how do you save an object, in grails, that has a composite id. I have an object that has a composite id including a long and a date and I am trying to save an instance of the object from the update method of another classes controller, and using (object).save() isn't working. Any tips or suggestions?

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  • iPhone SDK: How to determine keyboard type within a UIKeyboardDidShowNotification?

    - by iPhone Developer
    Hello, I need to know the current keyboard type. I was setting an instance variable in - (BOOL)textFieldShouldBeginEditing:(UITextField *)textField However, testing has shown that this is not always reliable because of the asynchronous nature of notifications. What I am wondering is if anyone can tell me how to determine the current keyboard type within a notification? - (void)keyboardDidShow:(NSNotification *) { // Need way to determine keyboard type here } Thanks.

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  • How to change sync settings through Android API?

    - by Kyle Slattery
    Is there a way to change the sync settings of a Gmail account programmatically with an Android app? For instance, I'd like to enable/disable syncing of a Gmail account from my app, without the user having to do anything. I took a look at AccountManager, but that doesn't seem to be the right place to look.

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  • Unusual Template Behavior with XSL

    - by bobber205
    Experiencing some very odd behavior with, what should be, a very simple use of XSL and XSLT. Here's a code sample. <xsl:template match="check"> <div class="check"> <xsl:apply-templates mode="check"> <xsl:with-param name="checkName">testVariable</xsl:with-param> </xsl:apple-templates> </div> </xsl:template> The template called above <xsl:template match="option" mode="check"> <xsl:param name="checkName" /> <div class="option"> <input type="checkbox"> </input> <label> testText </label> </div> </xsl:template> Pretty simple right? It should, for each instance of a instance in the XML create a checkbox in a with a hard coded label. However, what I'm getting is <div class="check"></div> <div class="option>Checkbox stuff here</div> <div class="option>Checkbox stuff here</div> <div class="option>Checkbox stuff here</div> <div class="option>Checkbox stuff here</div> <div class="check"></div> <div class="option>Checkbox stuff here</div> <div class="option>Checkbox stuff here</div> <div class="option>Checkbox stuff here</div> <div class="option>Checkbox stuff here</div> Here's some sample XML <check><option key="1"/><option key="0"/><option key="0"/><option key="0"/><option key="0"/></check> Anyone know what's going on? :D

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  • flash video dynamic width and height change in Action Script 3.0

    - by coderex
    hi I have a video player and the video file came from one xml file, The videos are in different dimension so how can i set the video dimension dynamically? _vid = new Video(); _vid.attachNetStream(_vidStream); How can i give the new dimension of the video, the default i get is http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/flash/media/Video.html Video(width:int = 320, height:int = 240) Creates a new Video instance. I need the height and width of the video, How

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  • Replace Entity Framework object

    - by majkinetor
    In MVC app, I am having this big object that is used in classic view/edit/create pattern. When user edits the object I save it as: public bool SetMyObject(MyObject newObject) { MyObject current = GetObjectById(newObject.Id); current.Prop1 = newObject.Prop1 ... current.PropN = newObject.PropN db.SaveChanges(); } MyObject is pretty big so I am wondering is there any better way to do this, not involving per-property assignments. For instance something along the lines db.MyObject.UpdateObject(current, tnew). Ty.

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  • Multiple Regex on String

    - by George
    How can I apply multiple regexs to a single string? For instance, a user inputs the following into a text area: red bird blue cat black dog and I want to replace each carriage return with a comma and each space with an underscore so the final string reads as red_bird,blue_cat,black_dog. I've tried variations in syntax along the lines of the following so far: function formatTextArea() { var textString = document.getElementById('userinput').value; var formatText = textString.replace( new RegExp( "\\n", "g" ),",", new RegExp( "\\s", "g"),"_"); alert(formatText); }

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  • Get an iPad/iPhones unique information from your app?

    - by MikeN
    How do you get the unique identifying information from an iPhone/iPad within an app? For instance, I want my app to send support emails to my website for users who have problems and I need to uniquely identify the phone number/id of the device it is running on. Is this possible, forbidden?

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  • Asp.net mvc class reference in session

    - by Billy
    Hi, if I put a custom class in session, then in an action method I get an instance of that class from session, and populate some fields, I noticed that when a different controller gets that class from session, those fields are populated. Even though after the first call didn't save the updated class back in session. is this typical behavior for session objects? I thought I had to use keyword 'static' on the class in session for this to happen thanks

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  • converting an interface to a type in MVC

    - by danielovich
    Hi. I have a small isuse regarding an interface. Consider this code: [HttpPost()] public void Update(IAuctionItem item) { RedirectToAction("List"); } Whenever I call this I get an exception saying I can't create an instance of type which i totally correct. But is there a way of telling what the interface should map to without actually using the concrete type ?

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  • log4net configuration problem

    - by user177883
    I have a seperate Log4Net.config file. I added [assembly: log4net.Config.XmlConfigurator(ConfigFile = "Log4Net.config", Watch = true)] to AssemblyInfo.cs When I run the application with debug mode, lognet is logging. When i publish the application to IIS, lognet is not logging anything. I have the followings also : BasicConfigurator.Configure(); // in a method private static readonly ILog _logger = LogManager.GetLogger(typeof(_Default)); // for the instance What would be the reason for this?

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  • Visual Studio 2010 - Is it slow for anyone else?

    - by AngryHacker
    I've read a lot of stuff about VS2010 being much more performant than VS2008. When I've finally installed it, I found that it, in fact, is much slower (save for the Add References dialog). For instance, Silverlight projects take twice as long to load, the startup of the IDE itself is much slower, etc... Am I missing something here or is it like this for everyone?

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