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  • How to debug "The type initializer for 'my class' threw an exception"

    - by JFB
    I am getting the exception: The type initializer for 'my class' threw an exception. in my browser after running my web application. Since this seems to be an error message generated from the view (.aspx), there is no way I can see the stack trace or any log for the source of this error. I have read a bit around the net and one solution to debugging is to throw a TypeInitializationException and then looking at the inner exception to find out what was wrong. How can I do this when I don't know where to surround code with a try/catch ?

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  • Visual C++/CLI "An unhandled exception of type 'System.StackOverflowException' occurred in"

    - by JennyWong
    Hi, I have a game I am making, it is giving me this message... "An unhandled exception of type 'System.StackOverflowException' occurred in game.exe" To explain...I have a 2D array with 9 different opening moves and I am getting a random number to use as the array reference to retrieve the details needed for a move... you may get the same move again - but that's illegal. the move may be illegal for other reasons too So to try and fix this, I am calling the function again from within the function. The error occurs very randomly Is this bad practise to call a function from within itself? What would be a better way to randomly row from a 2D array, AND if it isn't accept to get another one.... Or better still, how can I retrieve a random LEGAL move?

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  • 'void' type not allowed here error (java) help?

    - by David
    When i try to compile this: import java.awt.* ; class obj { public static void printPoint (Point p) { System.out.println ("(" + p.x + ", " + p.y + ")"); } public static void main (String[]arg) { Point blank = new Point (3,4) ; System.out.println (printPoint (blank)) ; } } i get this error: obj.java:12: 'void' type not allowed here System.out.println (printPoint (blank)) ; ^ 1 error I don't really know how to start asking about this other than to ask: What went wrong here? What does this error message mean?

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  • Returning a ReadOnlyCollection from a method with an IList return type

    - by devoured elysium
    Here I have the following bit of code: private IList<IState> _states = new List<IState>(); private ReadOnlyCollection<IState> _statesViewer; public IList<IState> States { get { return _statesViewer; } } Generally it is preferable to return interfaces than the concrete classes themselves, but in this case, shouldn't I set as the return type of the States property a ReadOnlyCollection? Any user of my library will think it is possible to anything you can do with an IList if I set it as so, and that means adding elements. That is not true and I'm definitely breaking the contract exposing it as an IList. Am I right with this view or there is something else I am missing here?

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  • Why is Window.open()'s return type void ?

    - by Salvin Francis
    Doing something like this is perfectly permissible in javascript: var newWindow = window.open(...) However, this does not work in the senario of GWT (I am using 1.5 I dont know about later versions), Window window = Window.open("", "", ""); Throws me a compile time error that the open is a method with a return type as void. Why should it be void ? What if i want to close my popup from the main Window ? how do I get its handle ? I will have to resort to native javascript no doubt but i was just curious so as to why this is so...

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  • Unrecognized authentication type when doing an Auth to Exchange from Rails

    - by blakeage
    I'm getting this error when trying to authenticate with Exchange Server from Ruby on Rails: 504 5.7.4 Unrecognized authentication type config.action_mailer.raise_delivery_errors = true config.action_mailer.perform_deliveries = true config.action_mailer.delivery_method = :smtp config.action_mailer.smtp_settings = { :address => "x.x.x.x", :port => 25, :user_name => "xxdomain\xxuser", :password => "xxxxxx", :authentication => :login, :enable_starttls_auto => true } I've tried all sorts of combinations of configuration settings, including changing the settings to use "plain" authentication, adding the domain, setting enable_starttls_auto to true, false, and removing it entirely, removing the port. Nothing has worked. Any ideas?

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  • Override An Existing Property as a Child form of its return type

    - by Jason
    I apologize if that title is confusing. This question may be a result of lack of coffee and/or sleep, but my mind is not working correctly right now. Anyways, I have an inheritance tree like such (I know the architecture isn't ideal): BaseClass GeneralForm : Inherits BaseClass SpecificForm : Inherits GeneralForm And an object like so: MyItem MySpecificItem : Inherits MyItem I have Items As List (Of MyItem) as a property in BaseClass. I would like for SpecificForm to somehow override Items to return type List (Of MySpecificItem). I feel like this is easy to do, but again, my head is spinning and I can't think straight at the moment. Thank you so much in advance.

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  • iphone screen - type of view to use

    - by Fiona
    Hi There everyone... looking for some advice on what type of view can be used to build a screen with the following elements: 2 labels followed by 2 buttons. Then a small table view with 3 rows. Should a UIView be used or a UITableView? I've attempted using a UITableView - however I couldn't add the labels or buttons. So I've now built the view using a UIView. I added the labels and buttons and then a UITableView from the library. However I have no idea how to populate the rows in the table? Any ideas? Regards, Fiona

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  • Current tasks count at Appengine Task Queue

    - by splix
    Are there any ways to get count of current unfinished tasks at Google Appengine development server? I need it for making my integration test. I found a way to get this when running it local (just in mem), as described at appengine docs. But when i'm running it as a standalone server, from maven, this doesn't work. Just because library appengine-testing conflicts with Appengine SDK classes, and i can't use those classes together, when running sdk dev server.

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  • Type parameterization in Scala

    - by horatius83
    So I'm learning Scala at the moment, and I'm trying to create an abstract vector class with a vector-space of 3 (x,y,z coordinates). I'm trying to add two of these vectors together with the following code: package math class Vector3[T](ax:T,ay:T,az:T) { def x = ax def y = ay def z = az override def toString = "<"+x+", "+y+", "+z+">" def add(that: Vector3[T]) = new Vector3(x+that.x, y+that.y, z+that.z) } The problem is I keep getting this error: error: type mismatch; found : T required: String def add(that: Vector3[T]) = new Vector3(x+that.x, y+that.y, z+that.z) I've tried commenting out the "toString" method above, but that doesn't seem to have any effect. Can anyone tell me what I'm doing wrong?

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  • Me As Child Type In General Function

    - by Steven
    I have a MustInherit Parent class with two Child classes which Inherit from the Parent. How can I use (or Cast) Me in a Parent function as the the child type of that instance? EDIT: My actual goal is to be able to serialize (BinaryFormatter.Serialize(Stream, Object)) either of my child classes. However, "repeating the code" in each child "seems" wrong. EDIT2: This is my Serialize function. Where should I implement this function? Copying and pasting to each child doesn't seem right, but casting the parent to a child doesn't seem right either. Public Function Serialize() As Byte() Dim bFmt As New BinaryFormatter() Dim mStr As New MemoryStream() bFmt.Serialize(mStr, Me) Return mStr.ToArray() End Function

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  • Code Coverage Analysis for Embedded C++ projects

    - by Steve Hawkins
    I have recently started working on a very large C++ project that, after completing 90% of the implementation, has determined that they need to demonstrate 100% branch coverage during testing. The project is hosted on an embedded platform (Green Hills Integrity). I'm looking for suggestions and experiences from others on StackOverflow that have used code coverage products in similar environments. I'm interested in both positive and negative comments regarding these types of tools.

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  • Why do I get "could not load type" error with my custom SessionStateProvider

    - by Rising Star
    My associate has created a custom SessionStateProvider for me to use with my ASP.net application. I add the file CustomSessionStateProvider to my VS2008 Web Application Project and put the appropriate reference in the web.config and it works fine. However, my supervisor wants me to set this up as a GAC reference. At my office, we have many DLLs we've created that we use as GAC references across different projects. If I add my CustomSessionStateProvider to the Global Assembly Cache, my pages throw a could not load type CustomASP.CustomSessionStateProvider error. Simple removing the DLL from the GAC makes it work again, but I want to set this up as a GAC reference. What could be causing this problem?

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  • Capture form fields and repopulate the form with them

    - by Joel Cunningham
    I am currently testing a large web form and would like to be able to easily populate the form with several different lots of test data without having to type them each time. Is there a generic way to capture form inputs on a web page and have them repopulated on a different page load? I thought a tool like greasemonkey might be able to do something like this.

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  • PHP is not returning me a number type

    - by Tristan
    Hello, i tryed to follow that great tutorial (STAR rating with css : http://stackoverflow.com/questions/1987524/turn-a-number-into-star-rating-display-using-jquery-and-css) but i've just a big problem : When i do <span class="stars">1.75</span> or $foo='1.75'; echo '<span class="stars">'.$foo.'</span> the stars is correctly shown, but as soon as i do : while($val = mysql_fetch_array($result)) { $average = ($val['services'] + $val['serviceCli'] + $val['interface'] + $val['qualite'] + $val['rapport'] ) / 5 ; <span class="stars">.$average.</span> } the stars stops working i double checked the data type in mysql : they're all TINYINT(2) and i tryed that : $average = intval($average); but it's still not working, Thank you

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  • Performance of: if (OBJECT_INSTANCE is TYPE)

    - by Axonn
    I am working both in C# and ActionScript 3. Both language are type-aware, so you can do verifications such as: if (some_object_instance is SomeClassName_ThatIs_SomeType) I'm doing these kind of verifications in a few places. Might be a dumb question, but I will ask it anyway, and I want answers from both camps, C# and ActionScript: What goes on behind the scenes? Is it Reflection? If is, isn't this a long verification which might degrade performance if done in thousands of loops? And by "degrade performance" I mean, is it more intensive than say if (Math.sqrt(8) > Math.sin(10))

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  • What will we use Theory Attribute for ?

    - by Sandbox
    I discovered [Theory] and [Datapoint] attributes in NUnit. I am not very sure about how should I use these. I think they can be used for data-driven testing and this has got me interested. There aren't many resources available on the same. Can someone explain to me how to use them or point me to resources? Thanks.

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  • How to serialize a data of type string without using StringWriter as input

    - by starz26
    I want to serialize a input data of type string, but do not want to use StringWriter and StringReader for for serializing/Deserializing. The reason for this is when a escapse chars are sent as part of the Input string for serializing, it is serialized but some Spl chars are inserted in the xml(eg:"").I'm getting an XMl error while deserializing this serialized data. void M1() { string str = 23 + "AC"+(char)1; StringWriter sw = new StringWriter(); XmlSerializer serializer = new XmlSerializer(typeof(String)); serializer.Serialize(sw, str); System.Console.WriteLine("String encoded to XML = \n{0} \n", sw.ToString()); StringReader sr = new StringReader(sw.ToString()); String s2 = (String)serializer.Deserialize(sr); System.Console.WriteLine("String decoded from XML = \n {0}", s2); }

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  • Include Unit tests in the same package as the source code in Java

    - by TheDelChop
    Guys, I'm getting back into Java after a long stint in the Ruby world and I've got a question about JUnit tests and the source I'm testing. If I've got a package of graphics code for my company, lets call it com.example.graphics, should I include my tests in that package too or should they be included in a seperate package, like com.example.graphics.test? Thanks, Joe

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  • Type casting Collections using Conversion Operators

    - by Vyas Bharghava
    The below code gives me User-defined conversion must convert to or from enclosing type, while snippet #2 doesn't... It seems that a user-defined conversion routine must convert to or from the class that contains the routine. What are my alternatives? Explicit operator as extension method? Anything else? public static explicit operator ObservableCollection<ViewModel>(ObservableCollection<Model> modelCollection) { var viewModelCollection = new ObservableCollection<ViewModel>(); foreach (var model in modelCollection) { viewModelCollection.Add(new ViewModel() { Model = model }); } return viewModelCollection; } Snippet #2 public static explicit operator ViewModel(Model model) { return new ViewModel() {Model = model}; } Thanks in advance!

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  • java: ClassCastException - [Ljava.lang.Long; cannot be cast to java.lang.Long

    - by ufk
    Hello. well.. I use red5 and setting/getting attributes using the IConnection class but tha's really not relevant. 'L' means long in java. so 0L is 0 type Long instead of just '0' which is 0 type Integer. the following error message: stack trace: java.lang.ClassCastException: [Ljava.lang.Long; cannot be cast to java.lang.Long what's the difference between [Ljava.lang.Long and java.lang.Long ? thanks!

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  • Returning new base class when the parent class shared pointer is the return type

    - by Ben Dol
    Can you have a parent class shared pointer return type of a function and then return a new child class without it being a shared pointer? I'm not sure how shared pointers work in these situations, do they act like a regular pointer? Here is my example: BaseEventPtr Actions::getEvent(const std::string& nodeName) { if(asLowerCaseString(nodeName) == "action") return new ActionEvent(&m_interface); return nullptr; } ActionEvent is the subclass of BaseEvent in this situation. Cheers!

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  • inode_operations , warning: initialization from incompatible pointer type

    - by djTeller
    Hi everyone, I'm trying to compile a simple Kernel program that read and write from a proc file. I'm trying to set permission to that file by overriding the permission fp in inode_operations struct (.permission) static int module_permission(struct inode *inode, int op, struct nameidata *foo) { . . . } static struct inode_operations Inode_Ops_4_Our_Proc_File = { .permission = module_permission, /* check for permissions */ }; Our_Proc_File->proc_iops = &Inode_Ops_4_Our_Proc_File; For some reason, when I compile this i get - warning: initialization from incompatible pointer type on the following line: .permission = module_permission, /* check for permissions */ Any idea how to solve this? Thanks!

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