destructor

Getting the above error in following code. How to rectify it. Thanks. Please look for protected override void Finalize() { Dispose(false); } in the below code. using Microsoft.Win32; using System.Runtime.InteropServices; public class Kiosk : IDisposable { #region "IDisposable" // Implementing IDisposable since it might be possible for // someone to forget to cause the unhook to occur. I didn't really // see any problems with this in testing, but since the SDK says // you should do it, then here's a way to make sure it will happen. public void Dispose() { Dispose(true); GC.SuppressFinalize(this

<?php class A { static private $_instance = null; static public function Init() { self::$_instance = new A(); } function __construct() { echo "__construct\n"; } function __destruct() { var_dump(debug_backtrace()); echo "__destruct\n"; } } $a = A::Init(); Normally, we should get following output: (Yes. I got this result in 2 different servers with PHP 5.2.10-2ubuntu6.10 and PHP 5.3.1) __construct array(1) { [0]=> array(5) { ["function"]=> string(10) "__destruct" ["class"]=> string(1) "A" ["object"]=> object(A)#1 (0) { } ["type"]=> string(2) "->" ["args"]=> array(0) { } } } __destruct But, on

I am working with a class that uses a reference to EF in its constructor. I have implemented IDisposable , but I'm not sure if I need a destructor because I'm not certain I can classify EF as an unmanaged resource. If EF is a managed resource, then I don't need a destructor, so I think this is a proper example: public ExampleClass : IDisposable { public ExampleClass(string connectionStringName, ILogger log) { //... Db = new Entities(connectionStringName); } private bool _isDisposed; public void Dispose() { if (_isDisposed) return; Db.Dispose(); _isDisposed= true; } } If EF is unmanaged, then I

If I move-construct a from b , is it still necessary to destruct b , or can I get away without doing so? This question crossed my mind during the implementation of an optional<T> template. Excerpt: ~optional() { if (initialized) { reinterpret_cast<T*>(data)->~T(); } } optional(optional&& o) : initialized(o.initialized) { if (initialized) { new(data) T(std::move(*o)); // move from o.data o.initialized = false; // o.data won't be destructed anymore! } } Of course, I could just replace the bool initialized with a three-valued enumeration that distinguishes between initialized, non-initialized and

For my current learning exercise, I'm studying linked lists and trees. I saw a suggestion recently to destroy data structures recursively by having each node delete its child/children. However in nearly all of examples I've found, the node destructor is empty and some managing class handles destruction using some form of iteration and delete. From a reliability and/or stylistic perspective, is there anything inherently bad about the recursive destructor? What follows is my implementation of my understanding of the two approaches. Recursive destruction: #include <iostream> struct Node { static

I am new to Kotlin, have written a class in kotlin to perform database operation I have defined database connection in constructor using init but I want to close database connection using destructor. Any Idea of how to achieve this using kotlin destructor? Currently I have wrote a separate function to close connection, which i want to have it using destructor like any other programming language like php,etc Handling resources that need to be closed in Kotlin You can make your Database Wrapper extend Closeable . You can then use it like this. val result = MyResource().use { resource -> resource

I'm developing a WinForm app with Visual Studio 2012 Ultimate edition with all service pack, C# and .NET Framework 4.5. I get this exception: Internal .Net Framework Data Provider error 1 With this stack: en System.Data.ProviderBase.DbConnectionInternal.PrePush(Object expectedOwner) en System.Data.ProviderBase.DbConnectionPool.PutObject(DbConnectionInternal obj, Object owningObject) en System.Data.ProviderBase.DbConnectionInternal.CloseConnection(DbConnection owningObject, DbConnectionFactory connectionFactory) en System.Data.SqlClient.SqlConnection.CloseInnerConnection() en System.Data