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  • Dump methods and attributes of object

    - by user246114
    Hi, I am using a third party library that provide some callbacks for a widget, but I'm not sure what the callback parameter objects are (no docs on them). Is there a way to just dump all the attributes of an object in javascript, then print them using alert(), maybe? I just want to see what methods and attributes they contain, Thanks

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  • Why are these methods public?

    - by Blankman
    My javascript looks like the following. I don't understand why these methods are all public though? Something.RegisterNamespace("One.ABC"); (function(ABC) { ABC.SayHello = function() { alert('hello'); }; })(One.ABC); So now I can do: One.ABC.SayHello();

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  • understanding of FPS and the methods they use

    - by numerical25
    Just looking on resources that break down how frames per second work. I know it has something to do with keeping track of Ticks and figure out how many ticks occured between each frame. But I never ran into any resources on why exactly you have to use the methods you use in order to get a smooth frame work. I am trying to get a thourough understanding of this. Can any explain or provide any good resources ? Thanks

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  • Accessing methods of an object put inside a class

    - by Klaus
    Hello, A class A possesses an instance c of a class C. Another class B has to modify c through C::setBlah(); method. Is it bad to create an accessor C getC(); in A and then use A.getC().setBlah() ? Or should I create a method A::setBlah(); that would call C::setBlah(); ? Isn't it annoying if there are several methods like that ?

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  • Difference between methods with and without generics

    - by isakavis
    Can someone help me understand advantages and disadvantages (if any) between the following methods which do the same function of storing away the entity to azure (in my case)? public bool Save<T>(string tableName, T entity) where T : TableEntityBase, new() { throw new NotImplementedException(); } vs public bool Save(string tableName, TableEntityBase entity) { throw new NotImplementedException(); }

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  • How can I access the group of a linq group-by query from a nested repeater control?

    - by Duke
    I'm using a linq group by query (with two grouping parameters) and would like to use the resulting data in a nested repeater. var dateGroups = from row in data.AsEnumerable() group row by new { StartDate = row["StartDate"], EndDate = row["EndDate"] }; "data" is a DataTable from an SqlDataAdapter-filled DataSet. "dateGroups" is used in the parent repeater, and I can access the group keys using Eval("key.StartDate") and Eval("key.EndDate"). Since dateGroups actually contains all the data rows grouped neatly by Start/End date, I'd like to access those rows to display the data in a child repeater. To what would I set the child repeater's DataSource? I have tried every expression in markup I could think of; I think the problem is that I'm trying to access an anonymous member (and I don't know how.) In case it doesn't turn out to be obvious, what would be the expression to access the elements in each iteration of the child repeater? Is there an expression that would let me set the DataSource in the markup, or will it have to be in the codebehind on some event in the parent repeater?

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  • Instantiating and starting a Scala Actor in a Map

    - by Bruce Ferguson
    I'm experimenting with a map of actors, and would like to know how to instantiate them and start them in one fell swoop... import scala.actors.Actor import scala.actors.Actor._ import scala.collection.mutable._ abstract class Message case class Update extends Message object Test { val groupings = "group1" :: "group2" :: "group3":: Nil val myActorMap = new HashMap[String,MyActor] def main(args : Array[String]) { groupings.foreach(group => myActorMap += (group -> new MyActor)) myActorMap("group2").start myActorMap("group2") ! Update } } class MyActor extends Actor { def act() { loop { react { case Update => println("Received Update") case _ => println("Ignoring event") } } } } The line: myActorMap("group2").start will grab the second instance, and let me start it, but I would like to be able to do something more like: groupings.foreach(group => myActorMap += (group -> (new MyActor).start)) but no matter how I wrap the new Actor, the compiler complains with something along the lines of: type mismatch; found : scala.actors.Actor required: com.myCompany.test.MyActor or various other complaints. I know it must be something simple to do with anonymous classes, but I can't see it right now. Any suggestions? Thanks in advance!!

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  • How bad is it to have two methods with the same name but different signatures in two classes?

    - by Super User
    I have a design problem related to a public interface, the names of methods, and the understanding of my API and code. I have two classes like this: class A: ... function collision(self): .... ... class B: .... function _collision(self, another_object, l, r, t, b): .... The first class has one public method named collision, and the second has one private method called _collision. The two methods differs in argument type and number. As an example let's say that _collision checks if the object is colliding with another object with certain conditions l, r, t, b (collide on the left side, right side, etc) and returns true or false. The public collision method, on the other hand, resolves all the collisions of the object with other objects. The two methods have the same name because I think it's better to avoid overloading the design with different names for methods that do almost the same thing, but in distinct contexts and classes. Is this clear enough to the reader or I should change the method's name?

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  • How bad it's have two methods with the same name but differents signatures in two classes?

    - by Super User
    I have a design problem relationated with the public interface, the names of methods and the understanding of my API and my code. I have two classes like this: class A: ... function collision(self): .... ... class B: .... function _collision(self, another_object, l, r, t, b): .... The first class have one public method named collision and the second have one private method called _collision. The two methods differs in arguments type and number. In the API _m method is private. For the example let's say that the _collision method checks if the object is colliding with another_ object with certain conditions l, r, t, b (for example, collide the left side, the right side, etc) and returns true or false according to the case. The collision method, on the other hand, resolves all the collisions of the object with other objects. The two methods have the same name because I think is better avoid overload the design with different names for methods who do almost the same think, but in distinct contexts and classes. This is clear enough to the reader or I should change the method's name?

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  • Should all public methods in an abstract class be marked virtual?

    - by Justin Pihony
    I recently had to update an abstract base class on some OSS that I was using so that it was more testable by making them virtual (I could not use an interface as it combined two). This got me thinking whether I should mark all of the methods that I needed virtual, or if I should mark every public method/property virtual. I generally agree with Roy Osherove that every method should be made virtual, but I came across this article that got me thinking about whether this was necessary or not. I am going to limit this down to abstract classes for simplicity, however (whether all concrete public methods should be virtual is especially debatable, I am sure). I could see where you might want to allow a sub-class to use a method, but not want it overriding the implementation. However, as long as you trust that Liskov's Substitution Principle will be followed, then why would you not allow it to be overriden? By marking it abstract, you are forcing a certain override anyway, so, it seems to me that all public methods inside of an abstract class should indeed be marked virtual. However, I wanted to ask in case there was something I might not be thinking. Should all public methods within an abstract class be made virtual?

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  • WPF 3D - Need help writing conversion methods between 2D and 3D (Point3DToPoint and PointAndZToPoint

    - by DanM
    I'm new to WPF 3D, so I may just be missing something obvious, but how do I convert from 3D to 2D and (for a given z location) from 2D to 3D? Specifically, I need two conversion methods: Point3DToPoint - If I have an (x, y, z) coordinate in the 3D world, how do I determine the (x, y) coordinate on the projected 2D surface. Method signature: public Point Point3DToPoint(Point3D point3D) PointAndZToPoint3D - If I have an (x, y) coordinate on the projected 2D surface and a z location in the 3D world, how do I determine the intersecting (x, y, z) coordinate in the 3D world? Method signature: public Point3D PointAndZToPoint3D(Point point, double z) I'd like the 2D coordinate to be the location measured from the upper-left corner of Viewport3D and the 3D coordinate to be the location relative to the origin (0, 0, 0) of the 3D world. Note 1: I found this related question, but it only addresses conversion from 3D to 2D (not the reverse), and I'm not sure if the answers are up-to-date. Note 2: I'm currently using .NET 3.5, but if there are improvements in .NET 4.0 that would help me, please let me know.

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  • Java native methods issues with SUN JVM (jdk1.5.0_14) and multi-core CPU’s

    - by Mattias Arnersten
    We are hosting an application on SUN JVM that handles a lot of XML parsing using Jaxb. The application is parsing the XML fine using JRockit 5 but when using the SUN JVM the JVM spends a majority of it’s time on native methods such as java-lang.System.arraycopy, java.lang.String.intern and java.lang.ClassLoader.getPackage. The CPU load is approx. 60% higher when using SUN JVM compared with JRockit. Even stranger is that when we only run the application server using one core (in WMWare) the problem disappears. Has anyone experienced the same behavior? Mattias Arnersten

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  • how to dynamically add observer methods to an Ember.js object

    - by Rick Moss
    So i am trying to dynamically add these observer methods to a Ember.js object holderStandoutCheckedChanged: (-> if @get("controller.parent.isLoaded") @get("controller").toggleParentStandout(@get("standoutHolderChecked")) ).observes("standoutHolderChecked") holderPaddingCheckedChanged: (-> if @get("controller.parent.isLoaded") @get("controller").toggleParentPadding(@get("holderPaddingChecked")) ).observes("holderPaddingChecked") holderMarginCheckedChanged: (-> if @get("controller.parent.isLoaded") @get("controller").toggleParentMargin(@get("holderMarginChecked")) ).observes("holderMarginChecked") I have this code so far but the item.methodToCall function is not getting called methodsToDefine = [ {checkerName: "standoutHolderChecked", methodToCall: "toggleParentStandout"}, {checkerName: "holderPaddingChecked", methodToCall: "toggleParentPadding"}, {checkerName: "holderMarginChecked", methodToCall: "toggleParentMargin"} ] add_this = { } for item in methodsToDefine add_this["#{item.checkerName}Changed"] = (-> if @get("controller.parent.isLoaded") @get("controller")[item.methodToCall](@get(item.checkerName)) ).observes(item.checkerName) App.ColumnSetupView.reopen add_this Can anyone tell me what i am doing wrong ? Is there a better way to do this ? Should i be doing this in a mixin ? If so please

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  • Ambiguous call between methods ASP.NET MVC

    - by GuiPereira
    I'm pretty new in ASP.NET MVC (about 3 months) and i've the followin issue: I have a Entity Class called 'Usuario' in a ClassLibrary referenced as 'Core' and, when i create a strongly-typed view and add a html.textboxfor< like: <%= Html.TextBoxFor(u => u.Login) %> it raises the following error: Error 3 The call is ambiguous between the following methods or properties: 'Microsoft.Web.Mvc.ExpressionInputExtensions.TextBoxFor<Core.Usuario,string>(System.Web.Mvc .HtmlHelper<Core.Usuario>, System.Linq.Expressions.Expression<System.Func<Core.Usuario,string>>)' and 'System.Web.Mvc.Html.InputExtensions.TextBoxFor<Core.Usuario,string>(System.Web.Mvc.HtmlHel per<Core.Usuario>, System.Linq.Expressions.Expression<System.Func<Core.Usuario,string>>)' d:\Documents\Visual Studio 2008\Projects\GuiPereiraMVC2\GuiPereiraMVC2\Views\Gestao\Index.aspx 20 25 GuiPereiraMVC2 anyone knows why?

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  • Import AppleScript methods in another AppleScript?

    - by DASKAjA
    Is there a way to use defined AppleScript methods in other AppleScripts which reference the original AppleScript with something similar to import (f.e. in PHP)? I wrote a methode to set Skype status and mood-text: on setSkypeStatus(status, mood_text) tell application "System Events" set skypeRunning to count (every process whose name is "Skype") if skypeRunning > 0 then --only set status if skype is running tell application "Skype" set myStatus to "SET USERSTATUS " & status set myMood to "SET PROFILE MOOD_TEXT " & mood_text send command myStatus script name "AppleScript" send command myMood script name "AppleScript" return skypeRunning end tell else return skypeRunning end if end tell end setSkypeStatus now I'm searching for something like import skype_methods.scpt. Is there such a functionality. I can't something related with Google.

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  • webclient methods not available to my Silverlight application

    - by mgkimsal
    Trying to do basic webclient data pull in C#, and the methods are not available in visualstudio, and the code is not compiling. //snip WebClient client = new WebClient(); byte[] resp = client.DownloadData(url); //snip Error 1 'System.Net.WebClient' does not contain a definition for 'DownloadData' and no extension method 'DownloadData' accepting a first argument of type 'System.Net.WebClient' could be found (are you missing a using directive or an assembly reference?) C:\Users\Michael\Documents\Visual Studio 2008\Projects\search2\search2\MainPage.xaml.cs I'm doing this in a c# file for a XAML/Silverlight project, but can't imagine why that would make a difference. I can not find any reference to this issue on the web, and I had something similar to this working last month, but in a regular ASP.NET page, not in a Silverlight app.

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  • Methods of providing custom reports for an asp.net application

    - by Jarrod
    In our windows application, we used crystal reports. If a customer needed a custom report, we could create it and then send them the rpt file. The customer would then simply add the report file to a custom folder, and could access it directly from our application. Using a web app, how is this possible. It seems like anything created, using ssrs, crystal, or even telerik reporting must be embedded. What are some methods for providing custom reports to users of an asp.net web application?

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  • jquery dynatree class methods

    - by Jj Zhang
    I'm a new user of dynatree plugin. When I read the documentation, I found the list of tree and node class member functions, such as tree.getRoot(), node.countChildren(). However, when I tried to use them, it complained that no such methods were found. Here is a sample code I am testing with: var tree = ("#test").dynatree(treeData); var rootNode = tree.getRoot(); //not working var rootNode2 = ("#test").dynatree("getRoot"); //this works var numChildren = rootNode2.countChildren(); //not working Help please. Thanks. -JJ

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  • add methods in subclasses within the super class constructor

    - by deamon
    I want to add methods (more specifically: method aliases) automatically to Python subclasses. If the subclass defines a method named 'get' I want to add a method alias 'GET' to the dictionary of the subclass. To not repeat myself I'd like to define this modifation routine in the base class. But if I check in the base class init method, there is no such method, since it is defined in the subclass. It will become more clear with some source code: class Base: def __init__(self): if hasattr(self, "get"): setattr(self, "GET", self.get) class Sub(Base): def get(): pass print(dir(Sub)) Output: ['__doc__', '__init__', '__module__', 'get'] It should also contain 'GET'. Is there a way to do it within the base class?

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  • Using Static methods or none static methods in Dao Class ?

    - by dankyy1
    Hi I generate Dao classes for some DB operations in this manner making methods of Dao class as static or none static is better? Using sample dao class below ,If more than one client got to use the AddSampleItem method in same time?how this may result? public class SampleDao { static DataAcessor dataAcessor public static void AddSampleItem(object[] params) { dataAcessor =new DataAcessor(); //generate query here string query="..." dataAcessor.ExecuteQery(query); dataAcessor.Close(); } public static void UpdateSampleItem(object[] params) { dataAcessor =new DataAcessor(); //generate query here string query="..." dataAcessor.ExecuteQery(query); dataAcessor.Close(); } }

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  • Why are access modifiers on web service proxy methods important

    - by cand
    I'm creating interface to an external web service with C# client generated from WSDL. And in this client class I have methods with signature like: public ResponseType InvokeMethod(RequestType request). I want to change its access modifier to protected, but then web service responds with "web service method name is not valid" exception. Do You know why is that so? I understand that maintaining method name can be important for some reasons, but why can't I change this access modifier? Shouldn't it be a matter of my code what access I want to give to this method? Thanks for all the answers in advance.

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  • How do I create a partial function with generics in scala?

    - by Matteo Caprari
    Hello. I'm trying to write a performance measurements library for Scala. My idea is to transparently 'mark' sections so that the execution time can be collected. Unfortunately I wasn't able to bend the compiler to my will. An admittedly contrived example of what I have in mind: // generate a timing function val myTimer = mkTimer('myTimer) // see how the timing function returns the right type depending on the // type of the function it is passed to it val act = actor { loop { receive { case 'Int => val calc = myTimer { (1 to 100000).sum } val result = calc + 10 // calc must be Int self reply (result) case 'String => val calc = myTimer { (1 to 100000).mkString } val result = calc + " String" // calc must be String self reply (result) } Now, this is the farthest I got: trait Timing { def time[T <: Any](name: Symbol)(op: => T) :T = { val start = System.nanoTime val result = op val elapsed = System.nanoTime - start println(name + ": " + elapsed) result } def mkTimer[T <: Any](name: Symbol) : (() => T) => () => T = { type c = () => T time(name)(_ : c) } } Using the time function directly works and the compiler correctly uses the return type of the anonymous function to type the 'time' function: val bigString = time('timerBigString) { (1 to 100000).mkString("-") } println (bigString) Great as it seems, this pattern has a number of shortcomings: forces the user to reuse the same symbol at each invocation makes it more difficult to do more advanced stuff like predefined project-level timers does not allow the library to initialize once a data structure for 'timerBigString So here it comes mkTimer, that would allow me to partially apply the time function and reuse it. I use mkTimer like this: val myTimer = mkTimer('aTimer) val myString= myTimer { (1 to 100000).mkString("-") } println (myString) But I get a compiler error: error: type mismatch; found : String required: () => Nothing (1 to 100000).mkString("-") I get the same error if I inline the currying: val timerBigString = time('timerBigString) _ val bigString = timerBigString { (1 to 100000).mkString("-") } println (bigString) This works if I do val timerBigString = time('timerBigString) (_: String), but this is not what I want. I'd like to defer typing of the partially applied function until application. I conclude that the compiler is deciding the return type of the partial function when I first create it, chosing "Nothing" because it can't make a better informed choice. So I guess what I'm looking for is a sort of late-binding of the partially applied function. Is there any way to do this? Or maybe is there a completely different path I could follow? Well, thanks for reading this far -teo

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