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The role of static in C + +

There are three main functions of static:(1) Local static variables(2) External static variables/functions(3) static data member/member functionThe first two C and C + + have, the third is only in C + +, the following are described below:First,

Win7 64bit VS2010 OpenCV 2.4.9 environment configuration

Author: ChingSince the recent face recognition needs to use OPENCV, let me start the OPENCV study.OpenCV 2.4.9:http://sourceforge.net/projects/opencvlibrary/Click on the download in the image to download.After downloading, get a 348M

RMAN --- deleteobsolete cannot delete control file copy

RMAN --- deleteobsolete cannot delete control file copy description tmpcontrlfiletmpcontrolfilebkphomeoraclecontrol01ctl has been deleted through the OS command the question is how to delete these obsolete records: the following is a copy

C # Shallow copy and deep copy difference

Maybe someone would explain the difference between a shallow copy and a deep copy in C #: A shallow copy is a copy of an address to a reference type and a direct copy of a value type. It cannot be said that it is completely wrong, but at least not

Influence of static keywords on variables and functions in php

In php, static is a static variable. It can define a function. The variable is a global static variable, so how does adding static before a function or variable affect the function and variable? Let's take a look at it.   1) The description of

C/c ++ interview Summary (1) Interview Summary

C/c ++ interview Summary (1) Interview Summary I have recently been looking for a new job and have encountered many interview questions. Most of them have made me very embarrassed. Once again, I realized that my knowledge is lacking. my previous job

Java Memory Recycling (2)--garbage collection algorithm

If you haven't seen your first friend, please step: Java Memory Recycling (1)-Java garbage collection mechanism  Any garbage collection algorithm must do two things. First, it must detect the garbage object. Second, it must reclaim the heap

"The point of the sword" question 36: reverse order in an array

Topic:In the array of two digits, if the previous number is greater than the number that follows, then these two numbers form an inverse pair. Enter an array to find the total number of reverse pairs in this array.Ideas:Merge the sort merging

Linux core-memory management

Linux core-memory management-Linux general technology-Linux programming and kernel information. The following is a detailed description. The storage management subsystem is one of the most important components of the operating system. In the early

Oracle Database User-managed control file backup and recovery

InOracleDatabase,Control FileIs very important. It is used to record and maintain databases. When the database is restored, the server process and background process need to read various backup-related information from the control file. If the

Database review 7 -- restore

Database review 7 -- restoreDatabase review CH14 recovery 13.1 recovery concept Database SystemRestoreIt refers to the behavior that restores the database from an inconsistent state after a certain "failure" to a normal consistent state. The basis

OpenGL ES Shader language statements and structures (Official document sixth) built-in variables (Official document, chapter seventh to eighth)

Statements and structs for OpenGL es Shader language (Official document sixth chapter)The program block for the OpenGL es Shader language is basically composed of the following:Statements and declarationsfunction definitionSelect (If-else)Iterations

Differences between variables and functions in php after the static keyword is added

What are the differences between static global variables and common global variables, static local variables and common local variables? This article will answer your questions one by one. What are the differences between static global variables and

Influence of static keywords on variables and functions in php _ PHP Tutorial

The influence of static keywords on variables and functions in php. In php, static is a static variable. it can define a function. the variable is a global static variable, in this case, if we add static before a function or variable, what will be

Differences between static and common variables in php

Measure the test taker's knowledge about the differences between static variables and common variables in php. What are the differences between static variables and common variables? many php beginners may not understand the differences, today,

Differences between static and common variables in php _ php instance

What is the difference between static variables and common variables? many php beginners may not understand what they click, today, let's take a look at the differences between static and common variables in php. For more information,

Differences between variables and functions in php after the static keyword is added _ PHP Tutorial

The difference between variables and functions in php after the static keyword is added. What are the differences between static global variables and common global variables, static local variables and common local variables? This article will

Multi-threaded Access collection deep copy and shallow copy

Recently doing a project, there has been a very strange problem, debug mode, step by step, found that asynchronous sending an MQ message is no problem, but in the test environment there will be a problemThe code is as follows: list dataList =

The role of C + + *.h and *.cpp in compiling

First of all, we can put everything in a . cpp file. The compiler then compiles the. cpp into a . Obj,obj is the compilation unit . A program can consist of a compilation unit or multiple compilation units . If you don't want your source code

Deep copy and shallow copy of IOS collection

Transferred from: https://www.zybuluo.com/MicroCai/note/50592ConceptThere are two ways to copy objects: Shallow copy and deep copy. As the name implies, shallow copy, not copy the object itself, just copy the pointer to the object; Deep copy copies

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