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The Chinese meaning of mutalbe is "variable, easy to change", which is the opposite of constant (const in both C ++.In C ++, mutable is also set to break through the const restrictions. Variables modified by mutable will always be in a mutable state,

Open Source Forum System youyax 12th release ~ The main contents of this update are 1. Add commonaction.php Public Controller file 2. When quoting other people's published information, the quoted person receives the message notification 3, as

The Java heap is a runtime data zone, and the instance (object) of the class allocates space from it. The Java Virtual Machine (JVM) Heap stores all objects created by running applications. These objects are created through commands such as new,

  1. for smart pointers, security first, convenience second, localization (scoped_ptr) as much as possible ); 2. Add const to the referenced parameter; otherwise, use the pointer parameter; 3. Use of function overloading should be clear and easy to

What is the purpose of finalize ()Five steps to read:We all know the importance of initialization, and often forget the same important cleanup work. There is a garbage collector in Java that is responsible for (GC) reclaiming memory resources

I. Understanding of UNIX Network Programming 5 I/O models 1.1, blocking I/O modelsBlocking I/O (blocking I/O) model, the process calls Recvfrom, whose system calls are not returned until the datagram arrives and is copied into the buffer of the

The static keyword declares that a property or method is related to a class and not to a particular instance of a class, so such a property or method is also referred to as a class property or class method.If the access Control permission allows,

Read Catalogue Recommendation 31: No implementation code exists in the interface Recommendation 32: Static variables must first be declared after assignment Recommendation 33: Do not overwrite static methods Recommendation 34:

Broadcast of the popularity of countless enterprises for the dumping, in the direct broadcast market has become the top priority of corporate profits, how to build a more tall on the live platform, the Clouded Leopard live there is a way.better

Abstract: Technology lies in communication, communication, reproduced please specify the source and maintain the integrity of the work.A ReferenceReference: As mentioned before, his main function is to alias, similar to pointers, implementation is

Two classic categories of classesClass without pointer member (s)ComplexClass with pointer member (s)StringDefensive statements in the headerComplex.h#ifndef __complex__#define __complex__Code#endifInline Functionfunction is automatically a

First, the Static class1. Definition of static classStatic, which can be used to modify the properties or methods of a class, is known as statics.If a property of a class, regardless of how many objects are created, has only one storage space for

This article is reproduced, the original address: http://singo107.iteye.com/blog/1175084 There are 4 isolation levels for database transactions, from low to high, READ UNCOMMITTED,Read Committed,repeatable read, Serializable, these four levels can

IO Model IntroductionTo better understand the IO model, we need to review it in advance: synchronous, asynchronous, blocking, non-blockingWhat is the difference between synchronous (synchronous) IO and asynchronous (asynchronous) Io, what is

Recursive invocation of non-recursive calls Run time comparison Conclusion Bit operation and multiplication method Conclusion Recursive call/non-recursive invocationAs we all know, many algorithms are

1#include 2#include 3 4 classString5 {6 Public:7 String ();8String (Const Char*str);9String (ConstString &RHS);Ten~String (); One AString &operator=(ConstString &RHS); -Stringoperator+(ConstString &RHS); - Char

This article is reproduced, the original address: http://singo107.iteye.com/blog/1175084There are 4 isolation levels for database transactions, from low to high, READ UNCOMMITTED,Read Committed,Repeatable read, andSerializable, which can be resolved

Note: This article is a lot of blog learning and summary, there may be an understanding error. Please take a skeptical look at the same time if there are mistakes to be pointed out. What is the difference between synchronous IO and asynchronous Io,

C # Multi-threading, asynchronous, synchronous connection and differencesSuppose such an example:I want to fry five kinds of dishes, but only two stoves can be used, only at the same time fried two.The stove is a thread, how does synchronous and

Can a class in Java be static? The answer is yes. In Java we can have static instance variables, static methods, static blocks. The class can also be static.Java allows us to define static classes within a class. such as the inner class (nested