何时使用装饰图案？ [英] When to Use the Decorator Pattern?

问题描述

我正在研究我的设计模式，而我还没有认真使用我的编码模式就是装饰模式。

我明白了这种模式，但我很想知道的是现实世界中时代的一些很好的具体例子，装饰图案是最佳/最优/优雅的解决方案。

谢谢。

解决方案

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装饰器模式在流中使用很多：您可以使用流包装流来获取附加功能。我已经看到了.Net框架 - 据我所知，这发生在别的地方。我最喜欢的是在FileStream周围使用GZipStream，用于添加压缩​​。

I am going over my design patterns, and one pattern I have yet to seriously use in my coding is the Decorator Pattern.

I understand the pattern, but what I would love to know are some good concrete examples of times in the real world that the decorator pattern is the best/optimal/elegant solution. Specific situations where the need for the decorator pattern is really handy.

Thanks.

解决方案

The decorator pattern is used a lot with streams: you can wrap a stream with a stream to get added functionality. I've seen this with the .Net framework - as far as I know this occurs elsewhere. My favourite is using GZipStream around a FileStream, for added compression.

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