async in c 50

... Testing Async Code 67 12 Async in ASP.NET Applications 69 Using Async in Older Versions of ASP.NET MVC 70 13 Async in WinRT Applications 73 Providing Asynchronous Methods in a WinRT Component ... valid C# to use it inside a catch or finally block Often in catch blocks, and always in finally blocks, theexception is still in the process of unwinding the stack, and will be rethrown later inthe ... organizedinto self-contained topics • Chapters 6 and 7 focus on techniques to use in async code • Chapters 8 and 9 focus on complex behaviors of async • Chapters 10 to 13 discuss situations where async

Ngày tải lên: 31/03/2014, 01:20

... CommandType.Text Command.Connection = DBCon DBCon.Open() ’ Starting the asynchronous processing AsyncResult = Command.BeginExecuteReader(New _ AsyncCallback(AddressOf CBMethod), CommandBehavior.CloseConnection) ... Command.Connection = DBCon; DBCon.Open(); // Starting the asynchronous processing AsyncResult = Command.BeginExecuteReader(new AsyncCallback(CBMethod), CommandBehavior.CloseConnection); } public void ... { SqlConnection DBCon; Continued Trang 8SqlCommand Command = new SqlCommand();SqlAsyncResult ASyncResult; DBCon = new SqlConnection(); Command = new SqlCommand(); DBCon.ConnectionString = ConfigurationManager.ConnectionStrings["DSN_NorthWind"].ConnectionString;

Ngày tải lên: 05/07/2014, 18:20

... 7Dynamic Members This chapter describes how to implement classes containing pointers to dynamically allocated memory.These include ■ your own copy constructor definition and ■ overloading the ... Trang 2Exercise 2// -// merge.cpp // Implements the merge algorithm // -#include <iostream> #include <iomanip> #include <cstdlib> #include <ctime> using namespace std; ... -// Function selectionSort() inline void swap( int& a, int& b) // To swap { int temp = a; a = b; b = temp; } void selectionSort( int *arr, int len) { register int *p, *minp; // Pointer

Ngày tải lên: 06/07/2014, 17:21

... to city C (a) In straight-line distance, how far is city C from city A? (b) Relative to city A, in what direction is city C? (c) Why is the answer only approximately correct? => Một chiếc máy ... vết của cơn mưa trên cửa sổ bên hông của chiếc xe tạo ra một góc 60,0° với chiều dọc Tìm vận tốc của mưa liên quan đến (a) chiếc xe và (b) Trái Đất Bài làm: Gọi: v12 là vận tốc chuyển động của ... stick is given an initial speed v0 in the positive x-direction The coefficient of kinetic friction between the ice and the puck is µk (a) Obtain an expression for the acceleration of the puck

Ngày tải lên: 22/05/2022, 16:20

... the new sockets The server gets a socket for an incoming client connection by calling accept () int accept(int socket, struct sockaddr *clientAddress, unsigned int *addressLength) accept() dequeues ... new socket using send() and r ecv ( ) 9 Close the client connection using c l o s e ( ) Creating the socket, sending, receiving, and closing are the same as in the client The differences in the ... s t r u c t sockaddr_in) When connect () returns successfully, the socket is connected and c o m m u n i c a t i o n can proceed with calls to send() and recv() int send(int socket, c o n s t

Ngày tải lên: 05/11/2012, 14:45

... = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); Trang 24Accepting Connections#include <sys/types.h> #include <sys/socket.h> int connfd; struct sockaddr_in cliaddr; ... give structure to the address struct in_addr { in_addr_t s_addr; }; struct sockaddr_in { uint8_t sin_len; sa_family_t sin_family; in_port_t sin_port; struct in_addr sin_addr; char sin_pad[16];}; ... structure to the address struct in6_addr { uint8_t s6_addr[16];}; struct sockaddr_in6 { uint8_t sin6_len; sa_family_t sin6_family; in_port_t sin6_port; uint32_t sin6_flowinfo; struct in6_addr

Ngày tải lên: 05/09/2013, 09:57

... = 0 ❑ Pascalrecords cannot be returned by functions int i; integer,target :: i var int *a; a : ^integer; integer,pointer :: a char *b, *c; b, c : ^char; character,pointer :: b, c Machine *mp; ... error codes) ❑ function names likeDStack_init() less likely to cause naming conflicts ❑ checks for missing or double initialization (if using a single instance of stack) Remaining Problems ❑ not ... struct Bar { }; ❑ In C++, a class declaration introduces the class name into the scope where it is declared and hides any object, function or other declaration of that name in an enclosing scope

Ngày tải lên: 13/12/2013, 08:15

... base classes C# has no private inheritance; all inheritance is public Module 10: Inheritance in C# Accessing Base Class Members Topic Objective To describe how protected inheritance works Lead-in ... appears, click a cs source file c Click Open The contents of the selected cs source file will appear, in color 70 Module 10: Inheritance in C# Review Topic Objective To reinforce module objectives ... subtopics As in the preceding sections, introduce the syntax used to define sealed classes, and discuss the use of sealed classes Using Interfaces Introduce the role played by interfaces in working

Ngày tải lên: 17/01/2014, 09:20

... m_socListener.Listen (4); // create the call back for any client connections m_socListener.BeginAccept(new AsyncCallback ( OnClientConnect ),null); cmdListen.Enabled = false; } catch(SocketException ... function The 4 is a parameter indicating backlog indicating the maximum length of the queue of pending connections Next we made a call to BeginAccept passing it a delegate callback BeginAccept ... socket object which represents the incoming connection Here is the code for the callback delegate: public void OnClientConnect(IAsyncResult asyn) { try { m_socWorker = m_socListener.EndAccept

Ngày tải lên: 18/01/2014, 08:20

... Conditions 64 4.3 Check Inverse Relationships 66 4.4 Cross-check Using Other Means 67 4.5 Force Error Conditions 68 4.6 Performance Characteristics 69 5 CORRECT Boundary Conditions ... those interested in creating solid code.” Miguel de Icaza, Mono Project, Novell, Inc. “Andy and Dave have created an excellent, practical and (ofcourse) very pragmatic guide to unit-testing, illustrated ... singletons, circular object or class dependencies, etc Eliminate them early on to avoid implicit dependen-cies on this abhorrent practice in other parts of the code Trang 24EXCUSESFORNOTTESTING

Ngày tải lên: 16/02/2014, 13:20

... push(struct stack*); void pop(struct stack*); int full(struct stack*); int empty(struct stack*); Trang 1212 ن…أ G QXا —ŒC , ن…أاذإ ‰U L^’ نإ ت, rC ه هtCأ نأOCIC نذإءو, 5)#include<iostream.h> ... "; p=p->last;} cout<<endl;} #include<iostream.h> #include<conio.h> Trang 4040 struct list{int d;list*last;}; Trang 41 K,و M Mد[=ا ت-C J روM و (* (DELETE) ... if(a[m]!=k){ Trang 1818 نإ cو YK- …إو S- Uإ 10)#include<iostream.h> int p_q(){return a[head++];} void ser(int a[],int k){int y=0,t=tail,h=head; if(t==-1||h>t)cout<<"THE QUEUE

Ngày tải lên: 05/03/2014, 20:20

... of Labcenter Electronics Ltd Custom Computer Services Inc ( www.ccsinfo.com ) Custom Computer Services Inc specializes in compilers for PIC microcontrollers The main range comprises PCB compiler ... overflow INT_TIMER1 CCP1 Timer1 capture or compare detected INT_CCP1 Timer2 Timer2 register overflow INT_TIMER2 CCP2 Timer2 capture or compare detected INT_CCP2 RB0/INT pin Change on single pin ... reference source PIC, PICmicro, MPLAB, MPASM, PICkit, dsPIC, and PICDEM are trademarks of Microchip Technology Inc Labcenter Electronics ( www.labcenter.co.uk ) Labcenter Electronics is the

Ngày tải lên: 06/03/2014, 17:20

... 1Socket Programming in C/C++cSeptember 24, 2004 Trang 3Sockets are a protocol independent method of creating a connection between processes Sockets can be either I connection based or connectionless: ... connection is completed, thesocket is closed, and next connection can beaccepted Forking server: After an accept, a child process is forked off to handle the connection Variation: the child processesare ... build a concurrent server: I a fork is performed after the accept I The child process closes listenFd, and communicates usingconnectFd I The parent process closses connectFd, and then loops back tothe

Ngày tải lên: 15/03/2014, 17:20

... In some cases, two or more of the criteria are linked For example, increases in processing power could lead to increased production costs Conversely, we might imagine that the same increase in ... Serial Controller 149 Chapter 10 Optimizing Your Code 151 10.1 Increasing Code Efficiency 151 10.2 Decreasing Code Size 154 10.3 Reducing Memory Usage 156 10.4 Limiting the Impact of C++ ... for use in a line of business calculators produced by the Japanese company Busicom In 1969, Busicom asked Intel to design a set of custom integrated circuits-one for each of their new calculator

Ngày tải lên: 17/03/2014, 13:20

... contain much code: using using using using using using using using using using using using System; System.Collections.Generic; System.Linq; System.Net; System .Windows; System .Windows. Controls; ... of conductors underneath the screen surface detects the change in capacitance caused by the presence of a finger on the surface. The touch screen hardware then works out where on the screen ... fetching data from memory, changing the data and then putting it back (which is really all computers do). The most popular speed measure in a computer is the clock speed. A CPU has a clock

Ngày tải lên: 17/03/2014, 13:20

... malloc and free Memory Allocation in UNIX The Doug Lea Allocator Binning allocate free Chunk Coalescing Region-based memory management Obstacks Garbage Collection in C A Critique of Custom ... bins 11 Searching the best-fitting Chunk Small Requests < 256 bytes Check if there is a free chunk in the corresponding exact-size bin If not, look into the next larger exact-size bin and check ... Advanced C Programming Memory Management II (malloc, free, alloca, obstacks, garbage collection) Sebastian Hack hack@cs.uni-sb.de Christoph Weidenbach weidenbach@mpi-inf.mpg.de 16.12.2008 computer

Ngày tải lên: 19/03/2014, 13:40

... error checking for these calls: bind(sockfd, (struct sockaddr *)&my_addr, sizeof(struct sockaddr)); listen(sockfd, BACKLOG); Trang 19sin_size = sizeof(struct sockaddr_in);new_fd = accept(sockfd, ... will be connecting to int main(int argc, char *argv[]) { int sockfd; struct sockaddr_in their_addr; // connector’s address information struct hostent *he; Trang 29their_addr.sin_family = AF_INET; ... to use AF_INET in your struct sockaddr_in and PF_INET in your call to socket() But practically speaking, you can useAF_INET everywhere And, since that’s what W Richard Stevens does in his book,

Ngày tải lên: 19/03/2014, 13:41

... only for demonstrating the process of allocating, deallocating, and using a block in C. The malloc line allocates a block of memory of the size specified in this case, sizeof(int) bytes (4 bytes). ... struct rec { int i; float f; char c; }; int main() { struct rec *p; p=(struct rec *) malloc (sizeof(struct rec)); (*p).i=10; { top=NULL; } void stack_clear() /* Clears ... of lines. • Some special-purpose text files have very long lines. For example, a certain data file might have lines containing 542 characters, with each character representing the amino acid...

Ngày tải lên: 16/08/2012, 11:09

... instance of TcpListener listens for TCP connection requests and creates a new socket (in the form of a TcpClient or Socket instance) to handle each incoming connection. 2.3.1 TCP Client A TCP client ... access to a NetworkStream to abstract the sending and receiving of data. Constructors public TcpClient(); public TcpClient(IPEndPoint localEP); public TcpClient(string hostname, int port); Creates ... the TCP echo client with a graphical interface. TcpClient Summary Description TcpClient provides simple methods for connecting to, sending, and receiving data over a TCP connection. The TcpClient...

Ngày tải lên: 17/08/2012, 08:39

... with excellent preparation for working with WCF in the future. This chapter contains the following: • Overview of WCF architecture, including the Indigo service layer, the WCF connector, hosting ... specifications and to aggregate them and record them in the WSDL document. Introducing the WS- Specifications We introduce you to the WS- specifications again in Chapter 5, and then cover them in ... Hell, in which successive installations and removals of upgraded compo- nents cause incorrect type information to be retained in the registry. Technically, this is a versioning problem. But in more...

Ngày tải lên: 20/08/2012, 13:57