Join, join.
It is defined as a cross-link between two originally separated circuits or between two originally separated parts of a circuit. Energy can be transferred from one circuit to another, or from one part of a circuit to another.
Is the contradiction between high cohesion and low coupling?
High cohesion and low coupling are synonyms.
1。 High cohesion means self-integration.
2。 Low coupling means little dependence on the outside world.
It's just that they pay attention to different angles. Cohesion focuses on internal affairs, while coupling focuses on diplomacy.
An object has two diplomatic situations, one is to export values for others to call, and the other is to import values and rely on others. Low coupling means that the input values should be as few as possible. If input is necessary, then the form of input is also strong and weak, and strong coupling means relying heavily on others.
From the system point of view, it is contradictory to make each object independent of other objects, but want to output more value. So the so-called low coupling means to minimize unnecessary input, especially to avoid strong coupling.
From the system point of view, the closer to the bottom of the system, the more concrete it is, the stronger its coupling, while the higher the level, the more abstract it is, and the lower its coupling.
What is the synonym of mode?
Synonym of pattern
Method, style, mode, style, form, method, means, style and format
synonym
Fangfa
1 method
Example: Once his life is threatened, he can always figure out a way to escape.
ti li
2. Style
By discussing the writing style and expression of Truth and Method and the relationship between Gadamer and Heidegger, this paper expounds the reasons for this tendency of "understanding".
Ti Shi ge ju
3, posture mode
We are playing these little games with you. Please be patient, loving and humorous. You must understand that only through the process of collaborative creation can we get the way to complete the processing.
Geju
4. Mode
Ex.: He saw that all this was an illusion, but when he tried to explain it, he found that his mouth was not wide enough, because he could not explain "non-binary opposition" in his own words from the binary pattern.
Xingshi
5. Form
Example: They may be half right: the problem is not how time travel works, but that some forms of time travel are unnecessary and unreasonable.
Banfa
6. Measures
Example: You should be excited about your goal. The best way is to match your goals with your life and passion.
Shouduan
7. Method
However, if we stop to reflect, most of us admit that material enjoyment and financial wealth are only means to an end, not wealth.
Shiyang
8. Style
Example: Just when this special economic zone seemed to fail, the former builders made great efforts to build new high-rise hotels and shopping centers, which were densely packed with traditional towers.
Geshi
9. Format
Example: Applications that interact through messages have the advantage of loose coupling, because as long as both parties use the same message format, changes in one system will not affect the other system.
Method [Note] Method of handling things or solving problems: If he refuses, you can take him away.
Methods [Precautions] The methods and steps to solve the problems of thinking, speaking and acting. : work ~ study ~ thought ~.
Pattern [Note] Structure and format: The economy is developing rapidly, constantly breaking the old and forming new ones. This article is written at sixes and sevens, which is simply not a ~.
Format [Notes] Certain specifications and styles: official documents ~ letters ~.
Means [Note] ① Method of doing things: tough means | vicious means. Especially an improper method: playing tricks.
② Skill: I just want to ask you face to face.
Form [Note] See "Content and Form". …
Style [Note] The writing format or organizational form of the book: The style of the book has been determined. …
Style [Note] 1. Format; Appearance and shape.
Teacher's revision requirements: 1 is the same continuously, with no more than 20 words; 2, try to use synonyms instead, such as: damage = destruction; Channel = channel 10 integral
Well, I can't directly understand what problem you need to solve.
What is a VIP database? How to write a paper about it? Everybody help. Very urgent, very urgent.
1. Title: accurate, concise, eye-catching and novel.
2. Table of Contents: A table of contents is a brief list of main paragraphs in a paper. (Essays don't need to be listed in the table of contents)
3. Abstract: It is an excerpt from the main content of the article, which requires short and pithy content. The number of words can be as few as dozens, and it is advisable not to exceed 300 words.
4. Keywords or subject words: keywords are selected from the title, abstract and text of the paper, and are words with substantive significance to express the central content of the paper. Keywords are words used by computer systems to index the content characteristics of papers, which are convenient for information systems to collect and provide readers with retrieval. Generally, 3-8 words are selected as keywords for each paper, and a new line is set at the bottom left of the "abstract".
Subject words are standard words. When determining the subject words, the paper should have a theme, and according to the indexing and collocation rules, it should be converted into standardized words in the subject glossary.
5. Text of the document:
(1) Introduction: Introduction, also known as preface, preface and introduction, is used at the beginning of the paper. The introduction should generally write the author's intention, explain the purpose and significance of the topic, and point out the scope of the paper writing. The introduction should be short and concise, and stick to the theme.
(2) Text of the paper: The text is the main body of the paper and should include arguments, arguments, argumentation process and conclusions. The main part includes the following contents:
A. Propose-demonstrate;
B. analyzing the problem-arguments and arguments;
C. solving problems-demonstrations and steps;
D. conclusion.
6. The references of the paper refer to the main documents listed at the end of the paper that can be referenced or quoted in writing. References should be marked on a new page according to GB77 14-87 Rules for Recording References at the End of Documents.
English: Title-Author-Publication Information (edition, publisher, publication date): Author-Title-The requirements for the references listed in the publication information are:
The references listed in (1) should be official publications for readers' textual research.
(2) The listed references shall be marked with serial numbers, titles of works or articles, authors and publication information.
What is dependency injection?
Dependency injection and control inversion are synonymous and merged. Control inversion (IoC) is an important principle of object-oriented programming to reduce the coupling problem of computer programs. Control inversion also has a name called dependency injection. DI for short.
origin
As early as 2004, martin fowler put forward "What aspects of control have been reversed?" This question. His conclusion is that the acquisition of dependent objects is the opposite. Based on this conclusion, he created a better name for controlling inversion: dependency injection. Many extraordinary applications (more beautiful and complex than HelloWorld.java) are realized by two or more classes cooperating with each other, which makes each object need a reference from the object it cooperates with (that is, the object it depends on). If this acquisition process is self-implemented, as you can see, it will lead to highly coupled code that is difficult to test. IoC is also called "dependency inversion principle". Almost all frameworks use "Fowler 2004" technology, which can be said to be an application of IoC principles. Programmers in SmallTalk, C++, Java or various object-oriented programming languages. NET language uses these principles. Control inversion is the core of Spring framework. Apply control inversion, when an object is created, the external entities of all objects in the regulation system pass the references of the objects it depends on to it. In other words, dependencies are injected into the object. Therefore, control inversion is the inversion of responsibility about how an object obtains the reference of the object it depends on.
Editing this IoC is a design pattern.
IoC is IoC, not a technology, but a design pattern similar to GoF. Interface driver design interface driver has many advantages, which can provide different flexible subclasses and increase the stability and robustness of the code. , but the interface must be implemented, that is, the following statement will be executed sooner or later: ainterface a = new ainterface imp (); In this way, a coupling relationship is generated, such as: class a {ainterface aa () {} amethod () {a = new ainterface imp (); }} ClassA and AInterfaceImp are dependencies. If you want to use another implementation of AInterface, you need to modify the code. Of course, we can build a factory according to the conditions to generate the concrete realization of the required inclusion surface, namely: interface impfactory {containing face create (object condition) {if (conda) {return new containing face impa (); } else if(condition = condB){ return new AInterfaceImpB()； } else { return new AInterfaceImp()； }}} On the surface, the above problems have been alleviated to some extent, but in essence, this code coupling has not changed. This kind of coupling can be completely solved by IoC mode, which removes the coupling from the code, puts it into a unified XML file, and forms this dependency through the container when necessary, that is, injects the required interface implementation into the required class, which may be the source of the saying "dependency injection". IOC mode, through the introduction of IOC container to realize IOC mode, IOC container can manage the life cycle and dependencies of objects, thus making the configuration of applications and ......