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following are some suggestions for class design:■ A complex switch statement: consider adopting the "multi-form" Mechanism■ A large number of methods involve very different types of operations: Consider using several classes to implement them separately■ Many member variables have major differences in features: Consider using several classes (7) Make everything "private"-private as much as possible. A part of the database can be "public" (a method, class, or a field, etc.), and it will never be

Understanding of JAVA multi-thread concurrent programming and java multi-thread concurrent programming Understanding of JAVA multi-thread concurrent programming Java multi-thread programming focuses on concurrent access to a single resource. This article analyzes the understanding of concurrent

Js Object-Oriented Programming: how to detect object types and js Object-Oriented Programming In js, there are three types of objects to be detected: typeof, instanceof, and constructor. These types can detect objects, but there are some differences. 1. Use typeof to detect object types. Typeo, as the most common method for detecting types, returns the string type. The specific usage is as follows: Funct

Linux Network Programming-what can the original socket do ?, Linux Network Programming Generally, the programmer receives two types of sockets:(1) stream Socket (SOCK_STREAM): a connection-oriented Socket for connection-oriented TCP Service applications;(2) datagram Socket (SOCK_DGRAM): a connectionless Socket that corresponds to a connectionless UDP Service Application. From the user's perspective, the two

Understanding of Aspect-oriented programming (AOP) and Aspect-oriented programming (aop) When writing traditional business logic processing code, we usually habitually do several things: logging, Transaction Control and Permission control, and then write the core business logic processing code. After writing the code, you can't help but find that only a few lines of code are available for core business logi

C ++ programming ideology (Volume 1) read and summarize, programming ideology volume 1 I recently went to work idle and read the section "C ++ programming ideas" I think is the most helpful part for me. I will leave it for my own review, on the other hand, I will share with my friends:1 OPP Problems 1.1. Each object has a type. In OOP, class and type are synonyms

PLSQL programming basics, control statements, exception details, plsql programming Basics Basic PL/SQL programmingI,PL/SQL Overview1.PL/SQL Introduction PL/SQL (Procedural Language) is a programming Language that combines with Structured Query Language (SQL). It is an extension of SQL. It supports multiple data types, such as large objects and Collection types. I

Analysis process of the Swift programming language and the swift programming language process The Destructor is called immediately before a class instance is released. Deinit is used to indicate the destructor, similar to the initialization function. The Destructor only applies to the class type. Analysis Process Principle Swift Automatically releases instances that are no longer needed to release resourc

IOS development-network programming summary and ios network programming Summary For Network Programming of IOS, everyone will think of libraries such as BSD, CFNetwork, and NSURL. Although many third-party libraries are very convenient, as a developer, you also need to understand the underlying code. The Mind Map below is about the various Protocol Communicat

JAVA Learning (5): Java Object-Oriented Programming basics, java Object-Oriented Programming Java Object-Oriented Programming Basics Object oriented programming (OOP) is a powerful software development method.Data abstractionAndInformation HidingTechnology to simplify software development to achieveCode reuse. 1. Thr

Detailed description of how to implement database programming in Python, and programming in python Database This article describes how to implement database programming in Python. Share it with you for your reference. The specific analysis is as follows: There are at least six methods available for database programming

Python network programming (twisted-based client programming) Python's twisted is interesting. It can be used for server programming or client programming. Echo is the simplest example of programming. The client code is as follows, #!/usr/bin/pythonfrom twisted.internet.pr

Advanced specification of JAVA programming format, java programming A developer must have strict code specifications. For this reason, I have summarized some code specification cases. Contents 1. Preface 2. Trial Scope 3. JAVA Naming rules -- 3.1 Public conventions 3.2 Java files and packages 3.3 Class and interface naming rules 3.4 naming rules for methods 3.5 Constants 3.6 variables and parameters 3.7 com

Python function Programming Guide (4): generator details, python programming guide 4. generator) 4.1. Introduction to generators First, be sure that the generator is an iterator. The generator has the next method and has the same behavior as the iterator, which means that the generator can also be used in a Python for loop. In addition, the special syntax support for generators makes it much easier to compi

In Java programming, java programming tries its best to achieve performance. 1. Use the singleton whenever possible The use of Singleton can reduce the load burden, shorten the loading time, and improve the loading efficiency, but not all of them are applicable to singleton. Simply put,The Singleton is applicable to the following three scenarios: First, control resource usage and control concurrent resource

"Disclaimer: Copyright all, welcome reprint. Do not use for commercial purposes. Contact mailbox: feixiaoxing @163.com "Python's twisted is more interesting, both for server programming and for client programming. Programming in this regard. The simplest example is echo.The client code, such as the following,#!/usr/bin/pythonfrom twisted.internet.protocol Import