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• visual c# 2010 communicating between two projects

  - by cake is a joke

  I am trying to create a windows form project, and use speech recognition for the Kinect with the Kinect to Windows SDK. I have the form application project (p1) and the Kinect speech project (p2) which is a command prompt. I made it a command prompt because it was the easiest way to do things. Anyway, I have read and found two things about this. 1)I found out how to run two projects at the same time in the same solution. 2) I also found out how to add references to get classes from each project to the other. So, how would I get variables from each project? Just by using project references, or something? P2 can recognize speech and save it to variables, if that counts for anything.

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• NoMethodError when using .where (eager fetching)

  - by Ethan Leroy

  I have the following model classes... class Image < ActiveRecord::Base attr_accessible :description, :title has_many :imageTags has_many :tags, :through => :imageTags end class Tag < ActiveRecord::Base attr_accessible :name has_many :imageTags has_many :images, :through => :imageTags end class ImageTag < ActiveRecord::Base attr_accessible :position belongs_to :image belongs_to :tag end And when I use find for getting the Tag with the id 1 t = Tag.find(1); @images = t.images; But when I do the same with where, I get a NoMethodError, with the description undefined method 'images': t = Tag.where(:name => "foo"); @images = t.images; I also tried adding .includes(:images) before the .where statement, but that doesn't work too. So, how can I get all Images that belong to a Tag?

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• How can i do something like IList<T>.Contains(OtherObjectType) ?

  - by Noctris

  Hi, I have the following classes: Client ClientCacheMedia ( contains Client, Media and some other parameters so it is the link between the media and the client) Media where client contains an IList. Now what i would like to do, is have a way to check if this ilist contains a certain media so : Client.ClientCacheMedia.Contains(MyMedia) is there any way to let the IList accept media as an object to match ? ( i can easily override the Equals Property on ClientCacheMedia to check if the media passed is the one that the ClientCacheMedia.Media contains, it's just the Ilist that will not accept any other object on the Contains Method.

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• Unable to generate a temporary class (result=1). error CS0030: Cannot convert type 'Type[]' to 'Type'?

  - by grady

  I get this error after I created a class from my xsd file using the xsd.exe tool. So I searched the net and found a solution. Here is the link: http://satov.blogspot.com/2006/12/xsdexe-generated-classes-causing.html Problem is that this makes the code run, but somehow the deserialized data seems corrupt. I did what the site suggests and in the end the 2nd array dimension is always empty (see the comments of the site, somebody also had this problem). Question is, how do I solve this issue now? Is there another tool to create the xsd file? I tried Xsd2Code, without success. Thanks :-)

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• Is there a (C#) library that will create feeds for Amazon Marketplace Web Services?

  - by Josh Kodroff

  Does anyone know of a library out there (preferably in C#) that will take classes and generate XML or flat files suitable for feeds to Amazon Marketplace Web Services? In other words, I'd like to do something like this: var feed = new AmazonProductFeed(); var list = new AmazonProductList(); var product1 = new AmazonProduct(); product1.Name = "Product 1"; list.Add(product1); var product2 = new AmazonProduct(); product2.Name = "Product 2"; list.Add(product2); feed.Products = list; // spits out XML compliant with Amazon's schema Console.Write(feed.ToXml()); It looks like the only code Amazon provides are wrappers for the web service itself and the directory-based transport utility (AMTU).

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• including a string as a parameter to a function in a header file? c++

  - by Nara

  hello everyone, total newbie is here :) i have this header file, zeeheader.h, and i wrote some classes in it, i'm having problems giving a string as a parameter to one of the functions: class DeliTest { public: void DeliCheck(Stack*,string); void ComCheck (unsigned,string); bool EofCheck (unsigned,string); }; as i was implementinng it in the cpp file, i added #include to it, it seemed to be working, for example : as i was writing the "data." i got the "length()" appear by the intellisense, so i thought that it was working, but it wasn't. i got errors like: syntax error : identifier 'string' overloaded member function not found in 'DeliTest' this is one of the fucntions in the cpp file: bool DeliTest::EofCheck(unsigned i, string data) { if (i == data.length()-1) return 1; return 0; } am i supposed to be adding something to the header file??

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• Force type of C++ template

  - by gregseth

  Hi, I've a basic template class, but I'd like to restrain the type of the specialisation to a set of classes or types. e.g.: template <typename T> class MyClass { .../... private: T* _p; }; MyClass<std::string> a; // OK MYCLass<short> b; // OK MyClass<double> c; // not OK Those are just examples, the allowed types may vary. Is that even possible? If it is, how to do so? Thanks.

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• Objects with inheritance memory storage

  - by nikitas350

  Say that i have some classes like this example. class A { int k, m; public: A(int a, int b) { k = a; m = b; } }; class B { int k, m; public: B() { k = 2; m = 3; } }; class C : private A, private B { int k, m; public: C(int a, int b) : A(a, b) { k = b; m = a; } }; Now, in a class C object, are the variables stored in a specific way? I know what happens in a POD object, but this is not a POD object...

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• Updateable Priority Queue

  - by user1427661

  Is there anything built into the C++ Standard Library that allows me to work in a priority queue/heap like data structure (i.e., can always pop the highest value from the list, can define how the highest value is determined for custom classes, etc.) but allows me to update the keys in the heap? I'm dealing with fairly simple data, pairs to be exact, but I need to be able to update the value of a given key within the heap easily for my algorithm to function. WHat is the best way to achieve this in C++?

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• The pImpl idiom and Testability

  - by Rimo

  The pImpl idiom in c++ aims to hide the implementation details (=private members) of a class from the users of that class. However it also hides some of the dependencies of that class which is usually regarded bad from a testing point of view. For example if class A hides its implementation details in Class AImpl which is only accessible from A.cpp and AImpl depends on a lot of other classes, it becomes very difficult to unit test class A since the testing framework has no access to the methods of AImpl and also no way to inject dependency into AImpl. This has been a problem for me lately and I am beginning to think that the pImpl idiom and writing testable code don't mix well. Has anyone come across this problem before? and have you found a solution?

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• java - reduce external jar file size

  - by joe_shmoe

  Hi all, still learning, so be patient :) I've developed a module for a Java project. The module depends on external library (fastutil). the problem is, the fastutil.jar file is a couple of times heavier than the whole project itself (14 MB). I only use a tiny subset of the classes from the library. the module is now finished, and no-one is likely to extend it in future. is there a way I could extract only the relevant class to some fastutil_small.jar so that others don't have to download all this extra weight? there's probably a simple answer to this, but as I said, I still consider myself a noob. Thanks a lot

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• including .h files.

  - by Max

  Suppose I have two .h files: A.h and B.h. Moreover, A.h includes B.h itself: B.h - declares class B. class B { ... }; A.h - declares class A, which uses class B. #include B.h class A { void SomeFunction(const B& b); }; Now, I have some .cpp file, that uses both A and B classes (B class maybe used not only in A::SomeFunction(B)) What are the pluses to include both A.h and B.h (instead of only A.h) from the perspective of design-patterns and coding style.

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• A generic Find method to search by Guid type for class implementing IDbSet interface

  - by imak

  I am implementing a FakeDataSet class by implementing IDbSet interface. As part of implementing this interface, I have to implement Find method. All my entity classes has an Guid type Id column. I am trying to implement Find method for this FakeDbSet class but having hard time to write it in a generic way. Below is my attempts for writing this method but since it does not know about Id been Guid type, I am getting compilation error on m.Id call. Any ideas on how this could be accomplished? public class FakeDataSet<T> : IDbSet<T> where T: class, new() { // Other methods for implementing IDbSet interface public T Find(params object[] keyValues) { var keyValue = (Guid)keyValues.FirstOrDefault(); return this.SingleOrDefault(m => m.Id == keyValue); // How can I write this } }

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• Manually manipulating ArrayList

  - by jsan

  I have an assignment where I have to create a deque, however I am not allowed to use any built-in classes or interfaces. I am implementing my deque using an array list. My problem is that when I have to, for instance, add to the beginning of the array list (beginning of the queue), i am not allowed to do this: public void addFirst(ArrayList<Integer> array) { array.add(0, int); } Is there a way to do this without using the add() function? Such as manually adding to the front and shifting the rest of the array to the right? Or maybe creating a new array list and copying...I'm not sure. Any help would be great; I have a bunch of functions to write, and getting the first one done will definitely put me in the right direction. Thanks

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• Do I really need to return Type::size_type?

  - by dehmann

  I often have classes that are mostly just wrappers around some STL container, like this: class Foo { public: typedef std::vector<whatever> Vec; typedef Vec::size_type; const Vec& GetVec() { return vec_; } size_type size() { return vec_.size() } private: Vec vec_; }; I am not so sure about returning size_type. Often, some function will call size() and pass that value on to another function and that one will use it and maybe pass it on. Now everyone has to include that Foo header, although I'm really just passing some size value around, which should just be unsigned int anyway ...? What is the right thing to do here? Is it best practice to really use size_type everywhere?

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• port an iOS (iPhone) app to mac?

  - by William Jockusch

  Is there a preferred way to go about this? The app in question is not too large . . . single-player game that I wrote over the course of a couple of months. EDIT: I should add that I have no experience with mac development . . . outside of what comes naturally with being an iOS developer. EDIT: Classes heavily used in the game: subclasses of NSObject, UIView, and UIViewController. I don't know much about NSView, but I'm pretty sure all the UIView stuff will work in that class. Also some use of UITableViewController. I do also have Game Center, but I can leave that part out for now. There is no multi-touch.

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• Find and list all functions/methods in a set of JavaScript files

  - by Dan Milstein

  Is there a way to read a set of JavaScript files, and output a description of where every function/method is defined? I realize that this is likely impossible in full generality, due to the extreme dynamic nature of the language. What I'm imagining is something which gets the (relatively) straightforward cases. Ideally, I'd want it figure out where, e.g. some method got attached to string or hash or some other fundamental class (and also just let you find all the classes/functions that get defined once in one place). Does such a tool exist?

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• Coordinating 3 instances of Cycle on one page

  - by Wendy H

  I have 3 images, all same size, across top of page horizontally. I'd like to use Cycle to fade each instance very slowly, but I'd also like make sure the transitions do not start all at the same time, but are staggered. Is there somewhere this can be specified? If anyone can recommend a very slow fade rate, plus a way to prevent all 3 from fading/regenerating at the same time, I'd be very grateful! I assume I can run 3 instances of cycle using different classes for each container, and assure that no two photos are the same by "stacking" them in different orders within the divs ... yes? Thank you!

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• Why delegate types are derived from MulticastDelegate class why not it directly derive from Delegate class?

  - by Vijay

  I have a very basic question regarding delegate types. I compared the memebers of Delegate and MulticastDelegate classes in object browser and I couldn't find any new additional member present in MulticastDelegate. I also noticed that the Delegate class has GetInvocationList virtual method. So I assume that the Delegate class should have the capability to hold references to multiple methods. If my assumption is correct I wonder why not custom delegate types directly derive from the Delegate class instead of MulticastDelegate class. Not sure what I am missing here. Please help me understand the difference.

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• Linq to SQL DateTime values are local (Kind=Unspecified) - How do I make it UTC?

  - by ericsson007

  Isn't there a (simple) way to tell Linq To SQL classes that a particular DateTime property should be considered as UTC (i.e. having the Kind property of the DateTime type to be Utc by default), or is there a 'clean' workaround? The time zone on my app-server is not the same as the SQL 2005 Server (cannot change any), and none is UTC. When I persist a property of type DateTime to the dB I use the UTC value (so the value in the db column is UTC), but when I read the values back (using Linq To SQL) I get the .Kind property of the DateTime value to be 'Unspecified'. The problem is that when I 'convert' it to UTC it is 4 hours off. This also means that when it is serialized it it ends up on the client side with a 4 hour wrong offset (since it is serialized using the UTC).

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• "Method name expected" error when trying add a handler method to a delegate - C#

  - by zakplayyy

  I keep getting the error "Method name expected" when trying add the a method to a delegate. I have a delegate which is invoked when ever my game ends. The function I'm trying to add to the delegate stops a countdown from flashing (the method is in a static class). I've searched about and I'm still unsure why its not working. Here is the line causing the error: LivesManager.gameEnded += new LivesManager.EndGame(CountdownManager.DisableFlashTimer(this)); The this passes the current form to the method so it can disable the timer flash on the form. I have added methods from static classes to the same delegate before and it works fine, the only difference is that I'm passing the form as a paramater and then it doesn't like it. Is there any way to pass the form to the method without the error? Thanks in advance :)

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• Passing enum or object through an intent (the best solution)

  - by jax

  I have an activity that when started needs access to two different ArrayLists. Both Lists are different Objects I have created myself. Basically I need a way to pass these objects to the activity from an Intent. I can use addExtras() but this requires a Parceable compatible class. I could make my classes to be passed serializable but as I understand this slows down the program. What are my options? Can I pass an Enum? As an an aside: is there a way to pass parameters to an Activity Constructor from an Intent?

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• name of class that manipulates the entities

  - by cyberguest

  hi, i have a general question regarding naming convention. if I separate the data and operations into two separate classes. one has the data elements (entity), the other class manipulates the entity class. what do we usually call that class that manipulates the entity class? (the entity I am referring to has nothing to do with any kind of entity framework) manager? controller? operator? manipulator? thanks in advance

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• Localized database strings

  - by Steve

  I have a small Grails application that has the following domain: class Meal { String name String description String allergyNote } For localization purposes the three strings should now be available in multiple languages. For example, while an English user would see name="Steak", a Spanish user should see name="Filete" in the output. I was thinking of doing the following: class Language { String isoCode String languageName } class TranslatedString { Language language String translation } but I am not sure how to link the Meals with the TranslatedStrings as it is used for three members, also I would like to use it for other classes (not just Meal) as well (or do I need to have separated tables, i.e. a MealNameTranslated, MealDescriptionTranslated, etc tables?). I know this is probably a stupid question, but I am a beginner and have not been able to figure this out :-(

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• Java inheritance question

  - by user247866

  So I have 3 classes. Abstract class A Class B extends class A independent Class C In class D that contains the main method, I create a list of instances of class B List<B> b = method-call();` // the method returns a list of instances of class B Now in class C I have one method that is common to both A and B, and hence I don't want to duplicate it. I want to have one method that takes as input an instance of class A, as follows: public void some-method(LIst<A> a) However, when I do: C c = new C(). c. some-method(b) I get an error that some-method is not applicable for the argument List, instead it's expecting to get List. Is there a good way to fix this problem? Many thanks!

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