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• iPhone: Core Data save Class object

  - by Nic Hubbard

  I have an entity in core data called Location. Inside this I have a few fields, such as date. But, I would also like to save a class object in it that I created called Annotation. What type of attribute would I use for this, since it is a custom class object that I created? Location (object) |__ Date |__ Annotation (MKAnnotation protocol)

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• Creating base class for Entities in Entity Framework

  - by Thomas

  I would like to create a base class that is somewhat generic for all of my entities. The class would have methods like Save(), Delete(), GetByID() and some other basic functionality and properties. I have more experience with Linq to SQL and was hoping to get some good examples for something similar in the EF. Thank you.

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• Understanding Ruby class vs instance methods

  - by randombits

  I have the following code: #!/usr/bin/ruby class Person def self.speak p = self.new puts "Hello" p.chatter end private def chatter puts "Chattering" end end p = Person.new Person.speak I'd like to make chatter private, accessible only within p.. but I want p to be able to access it within the class method. Is there a better way to design this so chatter isn't available to the public, but a "factory" method like self.speak can call chatter?

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• Maximum number of type parameters used in a java class

  - by True Soft

  What is the maximum number of type parameters you used in a java class? Example for 4: class MyClass<A, B, C, D> { }

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• In an extension method how do a create an object based on the implementation class

  - by Greg

  Hi, In an extension method how do a create an object based on the implementation class. So in the code below I wanted to add an "AddRelationship" extension method, however I'm not sure how within the extension method I can create an Relationship object? i.e. don't want to tie the extension method to this particular implementation of relationship public static class TopologyExtns { public static void AddNode<T>(this ITopology<T> topIf, INode<T> node) { topIf.Nodes.Add(node.Key, node); } public static INode<T> FindNode<T>(this ITopology<T> topIf, T searchKey) { return topIf.Nodes[searchKey]; } public static bool AddRelationship<T>(this ITopology<T> topIf, INode<T> parentNode, INode<T> childNode) { var rel = new RelationshipImp(); // ** How do I create an object from teh implementation // Add nodes to Relationship // Add relationships to Nodes } } public interface ITopology<T> { //List<INode> Nodes { get; set; } Dictionary<T, INode<T> > Nodes { get; set; } } public interface INode<T> { // Properties List<IRelationship<T>> Relationships { get; set; } T Key { get; } } public interface IRelationship<T> { // Parameters INode<T> Parent { get; set; } INode<T> Child { get; set; } } namespace TopologyLibrary_Client { class RelationshipsImp : IRelationship<string> { public INode<string> Parent { get; set; } public INode<string> Child { get; set; } } } public class TopologyImp<T> : ITopology<T> { public Dictionary<T, INode<T>> Nodes { get; set; } public TopologyImp() { Nodes = new Dictionary<T, INode<T>>(); } } thanks

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• BeanDefinition class removed in Spring 4?

  - by mushtaq

  I am trying out the new Spring 4 release, and I found out that the BeanDefinition interface has been removed, if so what is the replacement class we should use in a scenario where we define a scope for a bean ? Prior to Spring release of 4 you could do this. @Bean @Scope(BeanDefinition.SCOPE_PROTOTYPE) class MyBean{ ... } EDIT As of Spring 4, can't you specify the spring bean scope in the @Scope Annotation, the only option given is to add a string and then the ProxyMode ?

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• Preventing call of a private constructor from within the class in java

  - by code_pro

  Hi We can resrict the creation of object of a class by making it's constructor private. But this constructor could still be called from within the class. is there anyway to prevent this in Java? Thnx.

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• Get position in class hierarchy

  - by jean

  Is the a way to get the number of ancestors for an instance of class? E.g. a class of type UITouch would be of level 2 as it inherits from NSObject.

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• Using the standard Flash AS3 scrollbar class

  - by WebDevHobo

  Flash has a scrollbar class, documented here: http://help.adobe.com/en_US/AS3LCR/Flash_10.0/fl/controls/ScrollBar.html However, besides listing functions and variables, there's no real explanation of how to hook an instance of this class to a textfield. Everything I've tried either ends up in errors or the scrollbar not showing. The documentation lacks a clear way of how you should bind the textfield and the scrollbar toghether, and CS4 isn't providing any help either. Can someone explain, or link to an example of how scrollbars work with textfield?

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• Jython saying "No visible constructors for class"

  - by clutch

  I have a jython servlet as part of a large application running in tomcat5. I tested a few Spring Framework classes and create the objects in the Jython servlet. When I try to create objects of classes in the application I catch an Exception message "No visible constructors for class". These java classes do have a public constructor class, such as: public SchoolImpl() { } I create the object in python: from com.dc.sports.entity import SchoolImpl ... school = SchoolImpl() What am I doing wrong?

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• jquery select element inside a class

  - by Erwin

  Hi fellow programmer I want to select an anchor inside a div like this <div class="response content"> Disapproved Bank Mandiri<br><br> <p> <a class="showlist" href="#">Back to list?</a> </p> </div> What is the jquery to do this ?

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• parameter extends a class

  - by coubeatczech

  Hello, I want to do a class thats accepts anything ordered and prints greater. (I'm just learning so I know it's a bit useless) class PrinterOfGreater[T extends Ordered](val a:T, val b:T){println(a > b)} I know that it can't be written by this style in scala, but I don't know how to write it properly... Do anybody know?

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• class foo; in header file

  - by Thomas

  Hi, Is some one able to explain why header files have something like this? class foo; // This here? class bar { bar(); }; Do you need an include statement when using this? Thanks.

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• Java Enum List from Class

  - by DD

  How do I go from a Class object to a list of enums generically? i.e. public static <T extends Enum> List<T> getList(Class<T> clazz) I cant find a way to get to the values() method

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• row specific class

  - by stimpie

  How do I create a Zend_Db_Table which returns a different class for each row.? Example UserTable has id,name and type Type contains class names (admin,client,etc...) The classes admin, client are all subclasses of user If I call fetch I need to get a admin or client object depending on the corresponding value in the db.

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• Styling a Div Class within Div ID

  - by HollerTrain

  I have a page that has the following div structure: <div id="name" class="class_name"> How would I style the class? Like this? #name .class_name name .class_name #name class_name ?

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• Which Exception class to choose

  - by PaN1C_Showt1Me

  Suppose you want to throw Exception like this: 'Project with the provided ID cannot be assigned.' and you don't want to write your custom Exception class. What predefined Exception class would you use for this? (I'm talking about all classes inheriting from Exception)

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• python return class

  - by William P

  Hi I new to python and I read from someone else of the example code below: class A: def current(self): data = Data(a=a,b=b,c=c) return data class B(A): #something here #print data a b c How do I print out the data a, b, and c?

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• real time scenario between interface/abstract class ?

  - by JavaUser

  Hi , Please give me a real time simple example for the below questions : Where to use interface rather abstract class Where to use abstract class rather interface I need code snippet for both . Which takes low memory and which performs well . Do I need to consider the design aspect also? What is the conceptual difference not the syntactical difference .

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• Opening a File Dialog from within a class module in vb6

  - by ajax

  I want to know how can we open a file dialog from withing a class module in vb6. I know how to do in forms, but I have to open it from within a class module.

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• Declaring variable as PHP class

  - by iamdadude

  I have a variable called $theclass and it's a string "Home_class". How can I define a class out of that string? The reason I need to do this is that the variable will change and I want to be able to declare the class that the variable is equal to. Is this possible? Thanks for any help.

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• Casting of object for a class loaded at runtime

  - by Steven

  hi, i load a class using Class.forName(klassname,false,loader) After this i create an instance using klass.newInstance(); It returns an object type.I want to cast it to specific type(ie.Klassnamw instance).I used normal casting but it gets hung because it is not resolved during runtime.How can i cast it?Hellp

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• Java "this" and inner class

  - by llm

  Is it possible to get a reference to this from within a Java inner class? i.e. Class outer { void aMethod() { NewClass newClass = new NewClass() { void bMethod() { // How to I get access to "this" (pointing to outer) from here? } }; } }

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• Scaffold is ignoring class file in CakePHP

  - by JoseMarmolejos

  Hi, when using scaffolding on a controller the views render fine and the app even attempts to insert the data; the problem is that the scaffold is completely ignoring the relations I'm defining in my model class, in fact it's ignoring the class entirely as I can delete the file and the controller still scaffolds and render the crud from the table. Has this ever happened to you?

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• Adding a class attribute on the Image tag generated by the hyperlink control

  - by iHeartDucks

  I have a hyper link control and I set the NavigateURL and the ImageURL property at runtime. I also need to set the class of the image tag that it generates but I cannot figure out how I can do that. The solution mentioned here http://stackoverflow.com/questions/1428879/apply-css-class-to-image-in-asphyperlink does not work because the image url is hard coded. any ideas?

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