阿木博主一句话概括：Smalltalk 语言模板方法模式的设计与应用
阿木博主为你简单介绍：模板方法模式是一种行为型设计模式，它定义了一个算法的骨架，将一些步骤延迟到子类中。本文将围绕Smalltalk语言，探讨模板方法模式的设计思路，并通过实际代码示例展示其在Smalltalk中的实现和应用。
一、
模板方法模式是一种常用的设计模式，它允许在运行时将算法的某些部分延迟到子类中实现。这种模式在Smalltalk语言中尤为适用，因为Smalltalk是一种面向对象的语言，它强调代码的可重用性和灵活性。本文将深入探讨Smalltalk语言中模板方法模式的设计思路，并通过实例代码展示其应用。
二、模板方法模式的设计思路
1. 定义一个操作，该操作定义了一个算法的骨架，它被实现为一个模板方法。
2. 将一些步骤延迟到子类中实现，这些步骤是算法的一部分，但具体实现可能因不同的子类而异。
3. 模板方法中的步骤通常包括一个或多个钩子方法，这些钩子方法允许子类在特定步骤中插入自己的逻辑。
4. 子类通过继承模板类并重写钩子方法来实现自己的算法步骤。
三、Smalltalk 语言中的模板方法模式实现
以下是一个简单的Smalltalk示例，展示了模板方法模式的基本实现：
```smalltalk
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