Hello, I have the following method in C#: public T Read<T>() { T[] t = new T[1]; int s = Marshal.SizeOf(typeof(T)); if (index + s > size) throw new Exception("Error 101 Celebrity"); GCHandle handle = GCHandle.Alloc(t, GCHandleType.Pinned); Marshal.Copy(dataRead, index, handl...
Ok, I poked around before posting and can't seem to find anything... so here we go. I decided that returning datasets, working with datasets and datatables in a front end app is a rather bad idea. So with the magic of generics I am returning a generic list via Webservice call ( not WCF just plain ol' asmx ) . That works dandy as long as...
Possible Duplicate: What are the reasons why Map.get(Object key) is not (fully) generic According to the javadocs (http://java.sun.com/javase/6/docs/api/java/util/Map.html) for the Map interface, the definition of get is V get(Object key) Returns the value to which the specified key is mapped, or null if this ...
I am working through a bug. In recreating the bug for the following sample I was able to determine why the problem is happening. But I am stuck for a better solution. So given the following program: public interface IFoo<T> { T OutputType(T param); } class Foo : IFoo<Foo> { public virtual Foo OutputType(Foo param) { Con...
I am wondering whether I can upgrade a basic IoC container I am using to support lazy load. So if I have registered IFoo, I would like the IoC container to know how to fulfil both of the following dependencies (the first being the standard way IoC containers work, while the second returns a simple delegate that calls into the container f...
hey guys, I've removed some of the complexities of my needs to the core of what I need to know. I want to send a collection of Values to a method, and inside that method I want to test the Value against, say, a property of an Entity. The property will always be of the same Type as the Value. I also want to test if the value is null, or...
Hi, I have created a Generic Extension method for DataRow object. The method takes no argument. I want to Invoke the Generic method through Reflection using MethodInfo. I can do this for Normarl public methods, but somehow I cannot get the reference of the Generic Extension method. I've read this question on SO which somehwat relates t...
I have asked this question about using the a Linq method that returns one object (First, Min, Max, etc) from of a generic collection. I now want to be able to use linq's Except() method and I am not sure how to do it. Perhaps the answer is just in front on me but think I need help. I have a generic method that fills in missing dates fo...
I am looking for a way to store a key-value pair in the application settings. From what I have found, key-value pair dictionaries are not serializable, and therefore cannot be stored in the application settings. Currently I have tried all sorts of dictionaries and collections and all of them work, until I restart the application, then a...
I have a piece of code that I think should compile, but it doesn't. Here is the code: public class Program { public void myMethod(List<EnumMap<? extends MyInterface, String>> map) { } public void caller() { EnumMap<MyEnum, String> map = new EnumMap<MyEnum, String>(MyEnum.class); List<EnumMap<MyEnum, String>> list = new LinkedList<E...
I have the following implicit conversion for java.util.Enumerations implicit def enumerationIterator[A](e : Enumeration[A]) : Iterator[A] = { new Iterator[A] { def hasNext = e.hasMoreElements def next = e.nextElement def remove = throw new UnsupportedOperationException() } } Unfortunately it doe...
Is there any good way to create a generic Vector4 class in C#? I have a couple of units(force, distance, moment, rotation, acceleration, velocity etc) that all need a 3d-representation and they all behave very similar and should therefore support the basic functions for adding, multiplying etc. Each class also contain some special case...
What meaning has <E> on the code Collection<E>? ...
I have backed myself into a a bit of a corner. Here is a simplified version of what I have (in C#): class OuterClass { private class BadClass { private int Data; public BadClass() { Data = 0; ... } } T Build<T>(Object Input) { T x = new T(); ...
This code snippet is from C# in Depth static bool AreReferencesEqual<T>(T first, T second) where T : class { return first == second; } static void Main() { string name = "Jon"; string intro1 = "My name is " + name; string intro2 = "My name is " + name; Console.WriteLin...
Hi, I'm trying to write a generic class which contains a generic TObjectList< T > which should contain only Elements of TItem. uses Generics.Collections; type TItem = class end; TGenericClass<T: TItem> = class public SimpleList: TList<T>; // This compiles ObjectList: TObjectList<T>; // This doesn't compile: Compiler...
I've been trying to make a generic class to represent a range of values but am having some difficulty trying to work out what I'm missing (the compiler comlplains about a missing copy constructor, but all the implementations I've tried have failed). So my questions: Is there a Range template somewhere I've missed to avoid me reinventin...
Is there a tool that would allow me to check use of generic collections in code that must be compilable with Java 1.4? I would imagine example code as: Map/*<String, Integer>*/ map = new HashMap(); map.put("abc", new Integer(3)); // ok map.put("def", "ghi"); // warning EDIT: Unfortunately the build process is "set in stone" to use J...
Hi! Is there a way to declare that the variable type of a generic class must be serializable? Best RegardsOliver Hanappi ...
I have come across some forum postings suggesting that the usage of generics in Ext-GWT is flawed. The postings are: http://extjs.com/forum/showthread.php?t=40759 http://stackoverflow.com/questions/523728/why-isnt-google-web-toolkit-more-popular With the latest release of ExtGWT, do these flaws still hold good? ...