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Golang 装饰器模式以及在NSQ中的使用
2022-07-03 16:07:00 【CmderQ】
一 背景
最近在研究NSQ这款中间件,发现了一些有意思的东西,装饰器模式就是其中一个。在整个项目中,装饰器模式的使用随处可见,因此有了这篇文章。
二 装饰器模式以及Go的实现
2.1 概念
装饰器模式属于设计模式的一种,它的定义,简单来说,就是在不改变对象的内部结构情况下,动态地扩展对象的功能。通过创建一个装饰器,包装真实的对象,给对象增加新的功能特性。在Java中,IO就是典型的应用到了装饰器模式;Python中,更是在语法上原生支持,这大大提高了装饰模式在 Python 中的应用。
2.2 Go实现装饰器模式
我们举个例子来看一下装饰器的应用。首先我们编写一个名为test
的函数,输出一条语句;如下:
package main
import "fmt"
func test() {
fmt
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