C # Implementation database transaction case

I am the actual project to take out the case, the scenario is such as when we do the e-commerce site, when the order is created in a series of operations, usually when the order is created we need the operation of the data table: the Order of the

C # enum type enum (i)

1. Enumerations are declared using the enum keyword, and are siblings of the class. Enumerations can be tied to classes orWritten in the class, cannot be written in the method.2. Enumerations are value types that are implicitly inherited from System.

The difference of struct struct in C and C + +

Very many times encountered this struct problem, here today briefly summarize my understandingFirst, the use of struct in C1. Define struct type separately using structstruct Student { int id; int name;} Stu1;struct Student

Codeforces Round #422 (Div. 2) C. Hacker, pack your bags! Sort of, greedy

C. Hacker, pack your bags!It's well known, the best-of-the-distract from something are to do one ' s favourite thing. Job is such a thing for Leha.So the hacker began to work hard in order to get rid of boredom. It means that Leha began to hack

PAT B 1038 Statistics with students C + + version

1038. Statistics with students (20) time limit: ms memory limit 65536 KB code length limit 8000 B procedure StandardAuthor Chen, YueThis requires reading the scores of n students and outputting the number of students for a given score.Input

C + + implements discrete cosine transform (parameters are two-dimensional pointers)

cos

Http://www.cnblogs.com/scut-linmaojiang/p/5013590.htmlWrite in frontSo far has read a considerable part of the grid watermark, and other aspects of the paper, but the progress of the paper has not been more, this month to choose some of the more

A typedef of the trap of C language

typedef is a keyword that can rename some data types or redefine some of the new data types. We understand typedef from the following points of view.1.typedef and normal data type typestypedef int Myint;int A = 10; MYINT B = 20;123123We rename int

How C + + compilers and linker work

Http://www.cnblogs.com/kunhu/p/3629636.htmlOriginally from: http://blog.sina.com.cn/s/blog_5f8817250100i3oz.htmlThis is not not a discussion of the university curriculum learned in the "compilation Principle", just write some of my own understanding

The interaction between Lua and C + +

lua

This is how Lua and C + + interact.A mess of foreplay:1. Download lua files to the website for LUA download and configuration2. Setting environment can be tested VS. Configuring the LUA EnvironmentThe interactive process is:1. C + + access to Lua

Compile-time allocation memory in C language

1. Stack area (stack)-the compiler automatically assigns the release, the main storage function parameter value, local variable value, etc.2. Heap area--distributed by the programmer to release;3. Global or static zone--store global variables and

Review1 (C # language Foundation)

Meshfilter determines what shape the object is.Meshrender determines the appearance of the object;Operating constant: readonly1.readonly string name_readonly = "ReadOnly string";2.//correct, can define any data typeReadOnly Program program_readonly =

Variables, properties, fields in C #

C + + has only the concept of member variables and functions, but C # adds a lot of terminology: fields, properties, variables, methods, messages, delegates ... First look at the word "variable": The term should mean a smaller subset of

C # Thread Class

C # has now suggested abandoning the use of Suspend, resume pausing/resuming threads, and minimizing the use of the Abort method to break a thread.The recommended threads for synchronization are: Mutex, ManualResetEvent, AutoResetEvent, Monitor.This

C # check Regular

Mailbox VerificationWhether the mailbox Email address whether strict mode verification public static bool Isemail (string value, bool Isrestrict=false){if (value. IsEmpty ()){return false;}String pattern = Isrestrict? @"^(? ("") ("".+?"" @)|

C # uses TCP connections (server)

Code implementationVariables to use:1 NULL // threads that are responsible for listening to clients 2 NULL // the socket that is responsible for listening to the client 3 // 4 new list(); 5 New List ();Start the

Generic classes of C # Learning Series

Because of the long time in the code does not use the generic class, so the concept of generic class is not very deep, recently in the optimization of the code, encountered a problem, found that the generic class is very good to solve, so you

C # Winform Clicking a checkbox in the TreeView control node does not trigger the NodeMouseClick event practice

There was a problem that bothered me, because the project required that I added a checkbox to each node of the TreeView control, which triggered the NodeMouseClick event when I clicked the checkbox, and I only wanted to trigger the event when I

P1311: Select Inn, p1311: Select Inn

P1311: Select Inn, p1311: Select InnDescription There are n special inns on the Lijiang River, which are numbered from 1 to n in order of location. Each inn is decorated in a certain color tone (k in total, with an integer of 0 ~ K-1 said), and each

My first blog ----------------- Use stringstream to intercept strings.

My first blog ----------------- Use stringstream to intercept strings.First, let's look at a question. The International Standard Book Number (I2017-07-05SBN) consists of 10 digits separated by the broken number, such as 0-670-82162-4. An ISBN is

Obtains CPU and memory usage and cpu memory usage.

Obtains CPU and memory usage and cpu memory usage.1. Obtain CPU usage It is mainly a computing task. Int CUseRate: GetCPUUseRate () // obtain CPU usage {int nCPUUseRate =-1; FILETIME ftIdle, ftKernel, ftUser; if (GetSystemTimes (& ftIdle, & ftKernel,

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