blocks|key|1317718|text|模式是关于如何解决某类问题的一种想法。反模式是关于如何不解决它的想法，因为实现该想法将导致糟糕的设计。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1317719|例如：“模式”将使用一个函数进行代码重用，“反模式”将使用复制-粘贴进行相同的操作。两者都解决了相同的问题，但使用函数通常比复制-粘贴更具可读性和可维护性。|1317720|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

A pattern is an idea of how to solve a problem of some class. An anti-pattern is an idea of how not to solve it because implementing that idea would result in bad design.

An example: a "pattern" would be to use a function for code reuse, an "anti-pattern" would be to use copy-paste for the same. Both solve the same problem, but using a function usually leads to more readable and maintainable code than copy-paste.

blocks|key|1317777|text|把事情搞得一团糟的常见方法。例如，像神/厨房类(做所有的事情)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1317778|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

A common way to make a mess. Like the god/kitchensink class (does everything), for example.

blocks|key|1317836|text|反模式是一种不解决问题的方法。但它还有更多的意义:它也是一种在尝试解决问题时经常可以看到的方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1317837|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

An anti-pattern is a way of not solving a problem. But there is more to it: it is also a way that can frequently be seen in attempts to solve the problem.

blocks|key|1317918|text|有趣的是，给定的解决问题的方法既可以是模式，也可以是反模式。Singleton就是最好的例子。它将出现在这两套文学作品中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1317919|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Interestingly a given way of solving a problem can be both a pattern and an anti-pattern. Singleton is the prime example of this. It will appear in both sets of literature.

blocks|key|1533195|text|反模式是人们倾向于以错误的方式编程的常见方式，或者至少是不太好的方式。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1533196|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Anti-patterns are common ways people tend to program the wrong way, or at least the not so good way.

blocks|key|1533296|text|任何对给定软件开发环境弊大于利的设计模式都会被认为是反模式的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1533297|有些反模式是显而易见的，但有些则不是。例如Singleton，尽管许多人认为它是很好的旧设计模式，但也有其他人不这么认为。|1533298|您可以查看问题What+is+so+bad+about+singletons?以更好地了解对它的不同意见。|offset|length|1533299|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/137975/what-is-so-bad-about-singletons^0|0|0|7|W|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@$F|S|G|T|1|U]]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

Any design pattern that is doing more harm than good to the given software development environment would be considered as anti-pattern.

Some anti-pattern are obvious but some are not. For example Singleton, even though many consider it good old design pattern but there are others who don't.

You can check question <a href="https://stackoverflow.com/questions/137975/what-is-so-bad-about-singletons">What is so bad about singletons?</a> to better understand the different opinions on it.

blocks|key|1533348|text|当你以非法的方式滥用设计模式，或者你不知道它的实际用法时，它有时会被使用。例如，为简单类创建构建器模式，或者为代码中使用的每个活动类痴迷地定义一个单例实例。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1533349|此外，它可能超出了设计模式的范畴。例如，在Java语言中将局部变量定义为最终变量，或者在可以简单地检查输入是否为空的情况下对NullPointerException使用try+/+catch，或者在使用对象后将其清空(就像在其他语言中所做的那样)，而您没有注意到垃圾收集机制，或者调用system.gc()来清空内存，以及许多其他误解，这些很可能被认为是货物崇拜现象。|offset|length|style|CODE|1533350|entityMap^0|0|1Q|K|3Y|B|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]|$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|P|8|@]|9|@]|A|$]]]|I|$]]

It is sometimes used when you misuse design patterns in an illegal way, or you don't know the actual usage of it. For example, having builder pattern for simple classes, or obsessively defining one singleton instance for each Active class you use in your code.
Also it might be beyond design patterns. For example, defining local variables in Java as final, or using try / catch for <code>NullPointerException</code> when you could simply check input against being null, or nulling objects after they are used (like what you do in some other languages) that you don't notice about garbage collection mechanism, or calling <code>system.gc()</code> to make memory empty, and many other misunderstandings, which are quite likely to be considered as Cargo-Cult phenomena.

I am studying patterns and anti-patterns. I have a clear idea about patterns, but I don't get anti-patterns. Definitions from the web and Wikipedia confuse me a lot.

Can anybody explain to me in simple words what an anti-pattern is? What is the purpose? What do they do? Is it a bad thing or good thing?

What is an anti-pattern?

软件开发

Java

我正在学习模式和反模式。我对模式有一个清晰的概念，但我不懂反模式。来自网络和维基百科的定义让我很困惑。有人能用简单的话给我解释一下什么是反模式吗？目的是什么？他们干些什么？这是一件好事还是坏事？

问什么是反模式？
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问什么是反模式？EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问什么是反模式？
EN