本文探讨了在软件设计中使用策略模式来提高代码的扩展性和灵活性。通过对比没有使用策略模式的情况，文章详细介绍了几种实现运行时动态加载DLL的方法，包括虚拟方法、委托和反射等，并对每种方法进行了优缺点分析。
Problem: hard to expand and change
if...else if... else if...
switch...case...case...
Approch to achive Run time dynamic load dll
>>virtual method (protected)
>>delegation
>>reflection
===>Strategy
delegation: once fulfil input parameter and return value are the same, you can use:event handler
interface: classes need to have same abstract meaning
template method: strategy is not a class instance, only a algorithm, template method is a class, has relationship between parent class and child class. parent class has the whole workflow and child class change one or more steps.
Without Strategy:
With Strategy:
扫一扫
195
被折叠的 条评论
为什么被折叠?
到【灌水乐园】发言
