The Strategy design pattern takes a little more work to implement than the Template Method pattern, but it is more flexible.
策略设计模式比模板方法模式花费了更多的工作去实现，但是它也更灵活。
An alternative to the Template Method is the Strategy design pattern, which factors the variant behavior into an interface.
模板方法模式的另一个选择是策略模式，它抽取了多变的行为到一个接口中。
The Template Method design pattern (GoF) addresses a common problem: we know the steps of an algorithm and the order in which they should be performed, but don't know how to perform all of the steps.
模板方法设计模式(gof)强调了一个普遍的问题：我们知道算法的每一步，并且知道他们执行的顺序，但是我们不知道怎么样去执行所有的这些步骤。
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