C++

Reprint Annotated Source: Http://blog.csdn.net/wang_zheng_kaiLet students use development tools, practice learning data compression codingTianjin University of Technology, School of letters and electricityThis article consists of two parts:Using C

4. Get the current directoryGETCWD will copy the current working directory absolute path to the memory space referred to by the parameter buf5. Set up working directoryChDir6. Get directory informationOpendir Open a DirectoryReaddir Reads directory

Title:Given an array of non-negative integers, you is initially positioned at the first index of the array.Each element of the array represents your maximum jump length is at that position.Determine if you is able to reach the last index.for example:

Topic:Given A stringS, find the longest palindromic substring inS. Assume that maximum length ofSis, and there exists one unique longest palindromic substring.idea: The title requires a longest palindrome substring of S. The brute force solution is

Suppose there is a class of GUI menu that shows the background pattern, this class is used in a multithreaded environment, so it has a mutex (mutex) for concurrency control:1 classprettymenu{2 Public: 3 ... 4 voidChangebackground

3.7 Enum TypesIn addition to the numerical data and text data we introduced before, in the real world, often encounter such a kind of data: a single choice of answer can only be a, B, C, D four one of the options; the color of the traffic lights can

(1) Final defines constants in Java that can be used for primitive types or class types, and if they are in a class type, such a type cannot be a parentClass is inherited, that is, it cannot have subclasses under it, and such classes are called

Typically, statements are executed sequentially. However, in addition to the simplest programs, sequential execution is often not sufficient. To do this, C + + defines a set of control-flow statements that allow for conditional execution or repeated

The difference between Constructor/non-constructor class Foo{public: //foo (): Val (0), next (NULL) {} int val; Foo *next;}; void Foo_bar () { foo bar; if (bar.val && bar.next) { cout Member Class Object with Default

 Recently, Effectvie C + + carefully read the side, very amazing the power and charm of C + +. Recently will be the recent reading experience and reading notes in this, must find use, if the summary of what is wrong, welcome criticism:Now only the

Differences in the compiler's implementation of the function pack extension for C + + 11 parameter templates (Variadic template)The topic is quite round the mouth. C + + 11 is not too much of a good thing, but the Variadic template is certainly one

Often people will take the keyword Var to compare with the dynamic. In fact, var and dynamic are completely two concepts that should not be compared at all. var is actually the "syntactic sugar" that is thrown at compile time, and once compiled, the

Passing parameters by valueWhen an argument is passed as a value, a new copy is created.Class Test {static void Main (string[] args) {int x=8;Fo (x);Console.WriteLine ("X={0}", x);}static void Fo (int p){p = p + 1;Console.WriteLine ("P={0}", p);}

Many people are worried about how to manipulate controls on the main form in a subform, or to manipulate controls on a subform in the main form. In comparison, it is a little simpler later, as long as the subform is created in the main form and the

/*Static fields, static properties, static methods, static constructs, static classes, Readonly,const, nested classes, partial class * Static can be understood as global, sharing the same block of memory * can be the default value of each type

Http://www.cnblogs.com/Soar1991/archive/2012/03/30/2426115.htmlMany applications on the web now use QR codes to share URLs or other information. Especially in the mobile domain, the QR code is a very large application scenario. Because of the needs

Method One:private void GetIP (){String hostName = Dns.gethostname ();//native namesystem.net.ipaddress[] AddressList = Dns.gethostbyname (hostName). Addresslist;//warns that gethostbyname () is out of date, I run and returns only one IPV4

#region Convert list<> to JSONpublic string List2json (List objlist, string classname){String result = "{";if (classname. Equals (String. Empty)//If there is no name for the given class, self-made smart{Object o = objlist[0];classname = O.gettype ().

//decimal into binaryConsole.WriteLine (Convert.ToString (69, 2));Decimal Turn octalConsole.WriteLine (Convert.ToString (69, 8));Decimal Turn hexConsole.WriteLine (Convert.ToString (69, 16));//binary Turn decimalConsole.WriteLine (Convert.ToInt32 ("1

The simplest example based on DirectShow: Video Player custom editionThis document records a simple DirectShow-based custom video player. The "Custom player" mentioned here actually refers to the player that manually adds filters one by one in the