Addison Wesley Essential C Sharp 3 ppt

... 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

... 1 030 // Disable user-defined warnings // The TicTacToe class enables two players to // play tic-tac-toe. class TicTacToeGame // Declares the TicTacToeGame class { static void Main() // Declares ... execution O Common Language Infrastructure 1 What Is the CLI? Base Class Library Common Language Specification Common Type System Common Intermediate Language 2 CLI Implementations 3 C...

Ngày tải lên: 19/06/2014, 22:20

... all of the code lines shown in Listing 3. 13 are equivalent. Listing 3. 13: Increment Operator spaceCount = spaceCount + 1; spaceCount += 1; spaceCount++; Similarly, you can also decrement a ... disconcerting when comparing values for equality, since they can unexpectedly be unequal. Consider Listing 3. 7. Listing 3. 7: Unexpected Inequality Due to Floating-Point Inaccuracies decimal...

Ngày tải lên: 19/06/2014, 22:20

... 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

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

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. ... } class Program { static void Main() { // Allowed in C# 4.0 Pair<Contact> contacts = new Pair<Contact>( new Contact("Princess Buttercup"), new Contact("In...

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

... 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 a column ... (added in C# 4.0). Named parameters provide a mechanism for setting specific public properties and fields within the attribute constructor call, even though the constructor includes no corr...

Ngày tải lên: 19/06/2014, 22:20

... 19.4. * Collection classes that implement IProducerConsumerCollection<T>. A common pattern enabled by concurrent collections is support for thread-safe access by producers and consumers. Classes ... Classes Collection Class Description BlockingCollection<T> Provides a blocking collection that enables producer/consumer scenarios in which producers write data into the collectio...

Ngày tải lên: 19/06/2014, 22:20

... At School : At School C : My School ( C .2 , 3 ) C : My School ( C .2 , 3 ) 3. 3. Practice: Practice: Form : (?) What + is +this / that ? (+) It’s +a / an + tªn ®å v©t. Ch c c c em ch¨m ... School : At School C : My School ( C .2 , 3 ) C : My School ( C .2 , 3 ) Unit 2 Unit 2 : At School : At School C : My School ( C .2 , 3 ) C : My Sch...

Ngày tải lên: 26/10/2013, 23:11