create header file in c language

Tài liệu Pro LINQ Language Integrated Query in C# 2008 docx

... Service-OrientedArchitecture, 3eBeginning ASP.NET 3.5Data Access, 2eBeginning C# 2008 DatabasesBeginning C# 2008Pro LINQ: Language Integrated Query in C# 2008www.apress.comSOURCE CODE ONLINECompanion eBook ... public class Contact { public int Id; public string Name; public static void PublishContacts(Contact[] contacts) { // This publish method just writes them to the console window. foreach(Contact ... foreach(Contact c in contacts) Console.WriteLine("Contact Id: {0} Contact: {1}", c. Id, c. Name); } }}As you can see, the Employee class and GetEmployees method are in one namespace, LINQDev.HR,...

626
3,138
4

Pro LINQ Language Integrated Query in C Sharp 2008 docx

Danh mục: Kỹ thuật lập trình

... Service-OrientedArchitecture, 3eBeginning ASP.NET 3.5Data Access, 2eBeginning C# 2008 DatabasesBeginning C# 2008Pro LINQ: Language Integrated Query in C# 2008www.apress.comSOURCE CODE ONLINECompanion eBook ... ability to have data collections with static type checking. Prior to generics—barring creating your own specific collection type for every type of data for which you wanted a collection—there was ... dem-onstrating how to handle concurrency conflicts actually create concurrency conflicts, so you can step through the code and see them unfold.This book is for anyone with an elementary understanding...

624
7,520
0

All about File I/O in C++ ppsx

Danh mục: Cao đẳng - Đại học

... c thể đ c file theo 3 c ch: - Đ c từng char: File. get(ch); - Đ c từng word: File& gt;>ch; - Đ c từng line: File. getline(ch,dimension); Bây giờ chúng ta sẽ "check" xem file c ... char ch; while(!OpenFile.eof()) { OpenFile.get(ch); cout << ch; } OpenFile.close(); } Chương trình này dùng c ch đ c từng ký tự (c n c c ch kh c là đ c từng từ (word) và đ c ... sẽ đ c một kí tự c a file và gán cho biến ch. Vòng lặp sẽ kết th c khi đến cuối file. Để vòng lặp “biết” đư c khi nào thì kết th c file thì, khi đ c file c một “con trỏ trong” (inside-pointer)....

Apress pro LINQ Language Integrated Query in C# 2008 phần 1 docx

Danh mục: Kỹ thuật lập trình

... 2eIllustrated C# 2008Accelerated C# 2008Pro .NET 3.5 ScalableApplication DesignExpert Service-OrientedArchitecture, 3eBeginning ASP.NET 3.5Data Access, 2eBeginning C# 2008 DatabasesBeginning C# ... ability to have data collections with static type checking. Prior to generics—barring creating your own specific collection type for every type of data for which you wanted a collection—there was ... obscure the relevant LINQ principles by focusing on a complex demonstration application you can’t put to practical use, Pro LINQ cuts right to the chase of each LINQ operator, method, or class....

Apress pro LINQ Language Integrated Query in C# 2008 phần 2 ppsx

Danh mục: Kỹ thuật lập trình

... C# 3.0 LANGUAGE ENHANCEMENTS FOR LINQorderings: ordering orderings , orderingordering: expression ordering-directionoptordering-direction: ascending descendingselect-or-group-clause: ... from-clause query-bodyfrom-clause: from typeopt identifier in expression join-clausesoptjoin-clauses: join-clause join-clauses join-clausejoin-clause: join typeopt identifier in expression ... C# enhance-ments discussed in this chapter have been made specifically for LINQ. But even without LINQ, there is a lot to be gained from the new C# features.The new object and collection initialization...

Apress pro LINQ Language Integrated Query in C# 2008 phần 3 pdf

Danh mục: Kỹ thuật lập trình

... Enumerable.Empty<string>();foreach(string s in strings) Console.WriteLine(s);Console.WriteLine(strings.Count());Here is the output of the preceding code:0Since the sequence is empty, there are no elements to display in ... first.Count());Console.WriteLine("The count of the second sequence is: " + second.Count());Console.WriteLine("The count of the intersect sequence is: " + intersect.Count());// ... LINQ to Objects sequences, those collections implementing the IEnumerable<T> interface. However, other domain’s collections, such as those for accessing a database, could choose to implement...

Apress pro LINQ Language Integrated Query in C# 2008 phần 4 ppt

Danh mục: Kỹ thuật lập trình

... System.Xml.XmlDocument)'is inaccessible due to its protection levelWith the W 3C DOM API, you can only create an XmlElement by calling an XmlDocument object’s CreateElement method like this:XmlDocument xmlDoc = new ... XMLOBJECT, as indicated in the previous pseudocode, we can specify its contents by specifying 1 to N XMLOBJECTs. As you will learn later in the section titled “Creating Text with XText,” you can ... I was introduced to XML. Back in 1999 I was contracting for the information technology division of a large corporation. I approached its common architecture group looking for a logging solution...

Apress pro LINQ Language Integrated Query in C# 2008 phần 5 ppt

Danh mục: Kỹ thuật lập trình

... 2007 4:37 PM 252CHAPTER 7 ■ THE LINQ TO XML APIXProcessingInstruction.Target on XProcessingInstruction Objects and XProcessingInstruction.Data on XProcessingInstruction ObjectsTo update the ... reference for later access.XProcessingInstruction procInst;XDocument xDocument = new XDocument( new XElement("BookParticipants"), procInst = new XProcessingInstruction("BookCataloger", ... "out-of-print"));Console.WriteLine("Before updating processing instruction:");Console.WriteLine(xDocument);procInst.Target = "BookParticipantContactManager";procInst.Data...

Apress pro LINQ Language Integrated Query in C# 2008 phần 6 ppt

Danh mục: Kỹ thuật lập trình

... obtain every descendant element in the document named BookParticipant. Since I am not reaching into a specific branch of the XML tree, it is necessary that I know the schema because I could ... by the W 3C specifi-cally for XML query use case testing.The example in Listing 9-4 contains data from three different XML documents. In my example code, I create each document by parsing a text ... 1002 Motorcycle $1,200.001999-01-25 Dee Linquent 1007 Racing Bicycle $175.001999-02-08 Jack Sprat 1007 Racing Bicycle $200.001999-02-12 Roger Smith 1007 Racing Bicycle $225.00OK, come on,...

Apress pro LINQ Language Integrated Query in C# 2008 phần 7 pptx

Danh mục: Kỹ thuật lập trình

... of each column, and then using the IComparable interface on each column if its dynamic data type implements the IComparable interface, or calling the static Equals method in System.Object if ... may be wondering, since I made such a big deal about calling the HasVersion method since the AcceptChanges method was not called, why not just call the AcceptChanges method? You could do that, ... static data type of each column, and then using the IComparable interface on each column if its dynamic data type implements the IComparable interface, or calling the static Equals method in...

Apress pro LINQ Language Integrated Query in C# 2008 phần 8 pps

Danh mục: Kỹ thuật lập trình

... the call to the SubmitChanges method in a try/catch block and specifically caught the ChangeConflictException exception. This is for handling concurrency conflicts, which I will cover in detail ... not much code considering it is also detecting concurrency conflicts and resolving them if they occur.Run Listing 12-1 by pressing Ctrl+F5. There is no console output, but if you check the ... // Save the changes. db.SubmitChanges();}// Detect concurrency conflicts.catch (ChangeConflictException){ // Resolve conflicts. db.ChangeConflicts.ResolveAll(RefreshMode.KeepChanges);}■Note...

Apress pro LINQ Language Integrated Query in C# 2008 phần 9 ppt

Danh mục: Kỹ thuật lập trình

... cities.Contains (c. City));foreach (Customer cust in custs){ Console.WriteLine("{0} - {1}", cust.CustomerID, cust.City);}As you can see in Listing 14-18, instead of writing the query ... add code to call the OnCreated method inside your entity class’s constructor like this:Calling the OnCreated Partial Methodpublic Customer(){ OnCreated(); }Then, for each mapped entity class ... change tracking begins. However, you can make change tracking more efficient by making your hand-written entity classes implement the change notification interfaces, System.ComponentModel.INotifyPropertyChanging...

Apress pro LINQ Language Integrated Query in C# 2008 phần 10 ppsx

Danh mục: Kỹ thuật lập trình

... section titled “Pessimistic Concur-rency” in Chapter 17 to see an example doing this.Change TrackingOnce the identity tracking service creates an entity object in its cache, change tracking ... ObjectChangeConflict objects. Notice that an ObjectChangeConflict object has a property named Object that references the actual entity object that the concurrency conflict occurred during the ... db.SubmitChanges(ConflictMode.FailOnFirstConflict); Console.WriteLine("SubmitChanges() called successfully.");}catch (ChangeConflictException ex){ Console.WriteLine("Conflict(s) occurred calling...

Teach Yourself the C# Language in 21 Days phần 1 pdf

Danh mục: Kỹ thuật lập trình

... Program-Development Cycle 9Creating the Source Code 9Understanding the Execution of a C# Program 11Compiling C# Source Code to Intermediate Language 13Completing the Development Cycle 14Creating Your ... The compiler takes your source code file as input andproduces a disk file containing the machine -language instructions that correspond to yoursource-code statements. With programs such as C and ... and C+ +, the compiler creates a file that can be executed with no further effort. With C# , you use a compiler that does not produce machine language. Instead, it pro-duces an Intermediate Language...