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This chapter describes the two counting functions-addref and release-of the iunknow interface that must be implemented by com. In short, this is similar to smart pointer functions. The memory is allocated in the component class. When the pointer of

The use of hresult values is a little more troublesome than a typical Boolean value. Of course, it also provides some additional information: there are multiple successful codes and multiple failed codes; the failure code may change. Direct transfer

/***************************************/ Chapter 2: menu, keyboard acceleration key, complex text editing control, and Attribute Table 1. The main frame window contains the title bar and menu bar, and various subwindows (including the toolbar

Chapter 2: toolbar and status bar 1. the toolbar is an object of the ctoolbar class, And the status bar is the object of the cstatusbar class. The ctoolbar class and the cstatusbar class are derived from the ccontrolbar class. The ccontrolbar class

/*************************************/ Chapter 2: Reading and Writing documents-MDI applications 1. The cmdiframewnd class in the MFC Library encapsulates all the functions of the main framework window and the MDI customer window (including the

First of all, I would like to thank KK, the technical partner of CERD for sharing his views and experiences on the technical details, configuration parameters, and system improvement of the website. In the face of the impact of high traffic and high

Chapter 1 kernel mechanism and structure analysis of Android is full of "very simple" and there is no need to introduce it if it is simple. Besides, these simpleCode, Called manyProgramIt may not be well written. Chapter 2: Analysis of Several CPP

Social needs are the driving force behind human progress. No, I need to learn the knowledge of COM to complete the work. The software industry is an industry that keeps learning and improving. learning methods are crucial. The first chapter is a

HDFS file system provides an API for an abstract File System Based on hadoop, which supports stream-based access to data in the file system.Features:1. Support for ultra-large files2. Detect and quickly respond to hardware faults (fault detection

1.1. Java Dynamic proxy Proxy (create proxy object) and invocationhandler (call forwarding) under java. Lang. Reflect package The proxy object represents the target object to execute the corresponding activity. Static Proxy: the proxy object

1.1 hadoop remote process call 1. remote interface call (versionedprotocol interface must be implemented) There is a method in it. During IPC communication, the version numbers of the client and server interfaces are compared. Must be

Use transactionsThe isolation level can be modified at any time and valid before the display changes. If the isolation level is modified during a transaction, the server should apply a new blocking level to all the remaining statements.Terminate a

Based on the most complex (as much as possible) functions, the customer's (User) needs are one-sided, fragmented, and current utilitarian Designed according to the current needs; ------------------- the functions the user wants after 3 months, note

1. beanfactory class structure system: The interface and its subclass define the Spring IoC container architecture. Because the beanfactory system is very large and complex, to understand Spring IoC, you must first clarify the Inheritance Mechanism

1. MySQL is a single-process multi-thread Architecture 2. view the engines supported by the current database Show engines \ G; 3 InnoDB has 7 Background threads, 4 Io threads, 1 master thread, 1 lock, and 1 error monitoring thread.Show engine

I am reading the fourth version of e-books. After all, it is thick and expensive. It is not cost-effective to buy books, and the translation of this version is also very good. I recorded some of my reading experiences. Chapter 1: I have a basic

I am reading the fourth version of e-books. After all, it is thick and expensive. It is not cost-effective to buy books, and the translation of this version is also very good. I recorded some of my reading experiences. Chapter 1: I have a basic

Chapter 4 components 1. com, the component object model, is a standard on how to build components and how to build applications through components.2. Advantages of components: applications can develop and change over time, custom applications,

JVM Garbage Collection Policy1. Static memory allocation and recyclingThe memory space is determined at compile time, and the memory space is allocated once the program is loaded. After the program is finished, the corresponding stack frame is

What is 1.javac?Javac is a compiler that translates a language specification into another language specification.What is the task of 2.javac?The Java source language is transformed into a JVM that can recognize another language, and then the JVM