Addison Wesley Essential C Sharp 7 potx

... catch block, is equivalent to specifying a catch block that takes an object data type: for instance, catch(object exception){ }. And since all classes ultimately derive from object, a catch ... (a common occurrence when accessing Microsoft COM libraries), using the named parameter syntax is certainly a convenience. However, notice that along with the convenience comes an impact on ... R...

Ngày tải lên: 19/06/2014, 22:20

... System.Reflection; using System.Collections.Generic; public class CommandLineHandler { // public static bool TryParse( string[] args, object commandLine, out string errorMessage) { bool success ... list control that displays a collection of objects. Given the collection, a list control could use reflection to iterate over all the proper- ties of an object in the collection, defining...

Ngày tải lên: 19/06/2014, 22:20

... assignment occurs at runtime. The C# compiler provides a command-line option for changing the default checked behavior from unchecked to checked. C# also supports an unchecked block that overflows ... that inaccuracies can occur with a simple assignment, such as dou- ble number = 140.6F. Since the double can hold a more accurate value than the float can store, the C# compiler will actu...

Ngày tải lên: 19/06/2014, 22:20

... contact to item could use a cast operator as follows: item = (PdaItem)contact; or even when no cast is necessary: contact = (Contact)contact; PdaItem item = contact; contact = (Contact)item; From ... public class Program { public static void Main() { Contact contact = new Contact(); // } } public class Contact : PdaItem contact.Name = "Inigo Montoya"; Figure 6.1: Refac...

Ngày tải lên: 19/06/2014, 22:20

... break; case 2: // break; case 3: // break; } ConnectionState connectionState; // switch (connectionState) { case ConnectionState.Connected: // break; case ConnectionState.Connecting: ... Disconnected, Connecting = 10, Connected, Joined = Connected, Disconnecting } Disconnected has a default value of 0, Connecting has been explicitly assigned 10, and consequently, Con...

Ngày tải lên: 19/06/2014, 22:20

... // } Because a base class constraint requires a particular base class, using struct or class with a base class constraint would be pointless, and in fact could allow for conflicting constraints. ... since it is not possible to derive from multiple classes. Similarly, base class constraints cannot be specified for sealed classes or specific structs. For example, C# does not allow a cons...

Ngày tải lên: 19/06/2014, 22:20

... Compiled Result of foreach on Collections System.Collections.Generic.Stack<int> stack = new System.Collections.Generic.Stack<int>(); System.Collections.Generic.Stack<int>.Enumerator ... in both collections to start. Concat() Combines two collections together to form a superset of both collections. Duplicate items are not removed from the resultant collection. Concat()w...

Ngày tải lên: 19/06/2014, 22:20

... Synchronization 77 3 Concurrent Collection Classes Another series of classes introduced with the .NET Framework 4 is the concurrent collection classes. These classes are especially designed to include ... 19.4. * Collection classes that implement IProducerConsumerCollection<T>. A common pattern enabled by concurrent collections is support for thread-safe access by producers and cons...

Ngày tải lên: 19/06/2014, 22:20

... jitting can add a com- pile step to the execution process, code efficiencies that a jitter can insert lead to performance rivaling that of programs compiled directly to machine code. Ultimately, CLI ... user-defined warnings // The TicTacToe class enables two players to // play tic-tac-toe. class TicTacToeGame // Declares the TicTacToeGame class { static void Main() // Declares the entr...

Ngày tải lên: 19/06/2014, 22:20

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