concept pm3

First, IntroductionAs we all know, C + + and Java are today's two mainstream object-oriented language, for the pros and cons of the two languages, everyone has their own different views, the more consistent view is that C + + is a compiled high-level language and Java is interpreted, so C + + fast and Java compatibility Good, C + + Suitable for bottom control while Java is longer than network programming. In any case, it is certain that the two languages will coexist for a considerable period of

Tags: basic async resolve connectivity tin Questions restart syn business Thank you, this is a good question, and the problem is that even though the concept is very easy to understand, the details of these several different concepts are too much,and understand the concept, to use, but also need to do a lot of research evaluation and development work. As a man who has been crawling in this field for year

Transferred from: http://kb.cnblogs.com/page/539838/In the previous article, we discussed what a schema is. In fact, these basic concepts are very important for architecture, and most people think they are aware of the concepts they are accustomed to every day, but in fact they are subconscious and not active. For example, "What is a table?" "When I do training, I often take this example to ask you, answer all sorts of strange things." This actually led to the structure of the time, the differen

(More click: mind Map Tutorial ) (original link: http://www.mindmanager.cc/)the expression of knowledge or problem is more than one form: corresponding to the same series of concepts, there can be different structure of the concept map. This is a time when we need to use mind mapping to create a concept map. This Mind map tutorial explains how to make concept ma

Inheritance is the relationship between classes and classes, and is a very simple and intuitive concept, similar to inheritance in the real world (such as a son inheriting a father's property).Inheritance can be understood as a procedure for a class to get methods and properties from another class. If Class B inherits from Class A, then B has the method and properties of a.Inheritance uses the extends keyword.For example, we have defined a class peopl

Concept | advanced | skills | The group in regular regular expressions is an important concept, and it is our bridge to advanced regular applications. the concept of Group a regular expression matching result can be divided into several parts, which is the purpose of the group. With the flexibility to use the group, you'll find that the regex is really h

because there is no red light can reflect, and the green of the cast to absorb, so the color of the black. Intrinsic color The intrinsic color, usually refers to the color characteristics of an object in normal white daylight, which, because of its universality, forms the concept of a color image of an object in our perception. This is a relative concept of color, however, in practical terms, even if th

1. PrefaceSection III describes some of the basic concepts of Netty, which describes the first concept of Netty bootstrap--startup class. Netty in the server and the client's startup class is not the same, this is not mistaken, the class is under the bootstrap package. All subsequent chapters are based on the current version of the Netty 4.1.24.Final version.2. Detailed structureThere are two main contents in bootstrap: Bootstrap and CONFIG. ChannelFa

session| concept what is session? Session direct translation into Chinese is more difficult, generally translated into time domain. In computer terminology, session refers to the time interval between a terminal user communicating with an interactive system, usually the time elapsed between registering into the system and logging off from the system. The session specific to the Web refers to the time when a user browses to a Web site, from entering

Original source: https://my.oschina.net/ym1983/blog/829314 Closures are an important concept in JavaScript, and for beginners, closures are a particularly abstract concept, especially the definition given by the ECMA specification, and it is difficult to understand it by definition without actual combat experience. Therefore, this article will not be a large description of the

first, the concept Data structure is like a catalyst, if there is no raw material is useless, only with the algorithm can help the algorithm to achieve the task faster; Data structure: Refers to the existence of one or more specific relationships between the set of elements of a dataset, which is simply a collection of various relationships between data. Program Design = data structure + algorithm; Explanation: If you want to write a program, you ne

Dba_oracle Basic Architecture (concept)2014-07-26 BaoxinjianI. Basic concepts of Oracle Architecture 1. Oracle's overall architecture is divided into three parts The first part: System Global Area (SGA) Part Two: program Global zone and background process Part III: Oracle's Files 2. From functional angle to those division Storage structure Includes: Control files, data files, and log files Role: Th

Please see the original: http://www.ucai.cn/blogdetail/7033?mid=1f=5Can be run online to see the effect Oh!Today, this class is divided into three big points, as the title points out, is to discuss the nature of the data, concepts and application practices. The 1th essence of the discussion is to stand at a higher altitude to analyze the production of data and various use scenarios, and then the data-related storage means to make a summary of the explanation. And the

Tags: pointer height memory statistics Test Eve theme phrase logicTransfer from: http://www.cnblogs.com/CareySon/archive/2011/12/22/2297568.html introduction In SQL Server, an index is an enhanced presence, which means that even without an index, SQL Server can still implement its due functionality. However, indexes can greatly improve query performance in most cases, especially in OLAP. To fully understand the concept of the index, you need to under

Concept of procedural knowledge, I. Overview of procedural knowledge (1) concepts of procedural knowledge Procedural Knowledge is related to "what to do" and mainly involves the application of concepts and rules. This kind of knowledge is basically consistent with the popular "skill" concept in China in terms of connotation and extension. Based on this, peilisheng (1996) defines skills as the ability to s

of an HTML or XML page is a node of a certain type, and these nodes contain different types of data.The browser object model (BOM).Developers use the BOM to control parts of the page that the browser displays. But the BOM does not have the relevant standard, until the HTML5 appears. HTML5 writes many BOM functions to the formal specification.The 2nd chapter uses JavaScript in HTML1. As long as you know the HTML page in the University class, you will not be unfamiliar with it.The main way to ins

The concept of dispensing 1. The fundamental concept of dispensingIn the multi-channel program fragmented, the number of processes is often more than the number of machines, the process of the situation of the use of the machine is unavoidable. The disposition machine transfers is to the disposition machine to stop assigns, is from the queue, according to the certain algorithm (fair, GAO Efficiency) chooses

"Scope"The scope in JavaScript can be understood as the size of a statement's environment, global scope, function scope, and eval scope. There is no block-level scope in JS.When it comes to scopes, we have to talk about the execution environment, and the execution environment is the most important concept in JS. The execution environment defines the other data that variables or functions have access to, and determines their behavior. Each execution en

Kubernetes Important Concept UnderstandingKubernetes is currently the most mainstream container orchestration tool, the next generation of distributed architecture of the king. 2018 Kubernetes The first version 1.10 has been released. Here's a look at some of the basic concepts of kubernetes.The kubernetes divides the machines in the cluster into master nodes and work nodes (node). The master node runs a set of processes Kube-apiserver, Kube-controlle

Three major features: encapsulation, inheritance, polymorphism 1, encapsulationEncapsulation is the encapsulation of objective things into abstract classes, and classes can put their own data and methods only trusted class or object operation, to the untrusted information hiding.Encapsulation is one of the object-oriented features and is the main feature of object and class concepts. Simply put, a class is a logical entity that encapsulates the data and the code that operates the data. Within an