disclose any information. The Dimitri rule also has a simpler definition: communicate only with direct friends . Let's start by explaining what a direct friend is: Each object has a coupling relationship with other objects, so long as there is a coupling between the two objects, we say that the two objects are friends. There are many ways of coupling, dependence, association, composition, aggregation and so on. Where we call the class that appears member variable, method parameter, method retur
Prototype mode (Prototype pattern)——. NET Design Pattern Series VITERRYLEE,2006 year JanuaryOverviewIn the software system, sometimes the product class is changed dynamically, and the product class has a certain hierarchical structure. If Factory mode is used, then the factory method class parallel to the product class hierarchy will also change with this change, which is obviously not appropriate. So how d
Interface
Various user interfaces and external systems should be described here. If you have already described the user interface in the requirement specification, you do not need to repeat it here. You can instruct the readers to refer to the Requirement Description. If the system provides interfaces for other systems, such as importing/exporting data from other software systems, it must be described here.
4.4 constraints and assumptions
Describes t
The general software design process is divided into the following steps:
1. conceptual phase
2. Analysis Phase
3. Architecture Design Stage
4. parallel development and testing
5. Acceptance and delivery phase
Architect Architecture Design Process
1. Requirement Analysis
2.
to record the state of each building in the combined streaming process;
(3)Diversion Scheme Design: Provides an intelligent and interactive diversion program design platform based on the diversion program table;
(4)Engineering Quantity Calculation: A universal structure design interface is implemented, which can calculate engineering quantities in a highly autom
Design Mode (5) creator mode (Builder)I. Schema Definition
Builder Pattern: separates the construction of a complex object from its representation, so that different representations can be created during the same construction process.
The builder mode is used to create a complex object step by step. It allows users to build complex objects by specifying the types and content of complex objects. users do not
The purpose of software architecture design is simply to break down the software system and reduce the complexity of software system development under the premise of keeping the software internal connection, and the basic methods of decomposition
Drug Design Software [Schrodinger] All manual
Schr ouml; Inger (SCHR) is a complete software package for drug discovery, including: Receptor-based and compound-based induction matching and flexible docking modes; binding modes based on the receptor structure and the polarity of the complexes; docking mode based on Receptor structure and solution environmental pr
PHP talks about refactoring-improving the design of existing code-5 simplifying function calls. The mind map introduces several articles in the previous series. I pay more attention to one of PHP's Miscellaneous "refactoring-improving the design of existing code" to reorganize your function, but I don't think I can clarify the mind map.
Introduction
Which of t
) {Sub.printemployee (); listfor (Employee e:list2) {System.out.println (E.getid ());}} }After the modification, for the branch office to increase the printing staff ID method, the head office directly to print, thus avoiding the coupling with the staff of the branch.The purpose of the Dimitri law is to reduce the coupling between classes, because each class reduces unnecessary dependencies, so it does reduce the coupling relationship. But everything has degrees, although can avoid and non-direc
Six principles of the design model (5): The dimit rule
Definition:An object should have a minimum understanding of other objects.
Problem:The closer the relationship between classes, the greater the coupling degree. When a class changes, the greater the impact on the other class.
Solution:Minimize coupling between classes.
Since we started to engage with programming, we have learned the general principles o
Excellent product design may be an important opportunity for software enterprises to develop. A good product design may lead enterprises to a sound development path of product serialization, service standardization, and internal management standardization. Question: What kind of design is an excellent product
external object, this solves the problem of using COM just now.
To tell the truth, it is still difficult to design such an interface. What are the advantages of this interface in actual development? I would like to have at least the following points:
1. The interface design is separated from the program logic design. The artist can work with the programmer, and
Abstract: This paper introduces a new design method of message queue-based duplicate server communication software, which is different from the parallel server and general duplicate server communication software, this new software has the advantage of generating a small number of sub-processes, and is easy to manage th
For. NET software
Several books recommended by design/Development Engineer
List several books that have had a big impact on me over the past year. Thanks to the authors and translators who have helped me with these books. Thank you for your hard work. I hope these books will be helpful to those who need them.
First:Analysis of Design Patterns(The2Version)
called, the current state is converted to the previously stored state (simple, complete information is saved, space is wasted, unnecessary).2) Save only information that changes between States, and only change these stored information when execute () or undo () is calledReference:Https://zh.wikipedia.org/wiki/%E5%91%BD%E4%BB%A4%E6%A8%A1%E5%BC%8Fhttp://www.ibm.com/developerworks/cn/java/design/Http://treelib.com/book-detail-id-59-aid-3471.html Copyrig
Introduction to the classic architecture model of the software architecture and design model
Source: recommended by netizens
RootAccording to Linda Rising's patternAlmanac has over 70 known architecture models. This is only a lot of statistics, including many models that are generally considered as
the code? No, just come to the database operation!Software Development Cycle Introduction 4: Code writing phase: Select a specific database for physical implementation; That is, start writing codeSoftware Development Cycle Introduction 5: Software testing phase: ....... ..... 10,000 words are omitted here. Software te
experience is better.The standby time is 30 days, and the use time is 5 hours.This is my most important point. For laptops, battery endurance is really important. However, most laptops have poor endurance, so they have to get used to it. Now you can enjoy such a long endurance to know what is good. Simply put, the 100 new features are no longer important than their endurance.When the computer is used up for the moment, the system immediately changes
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.