3.GRASP原则三: 低耦合 Low Coupling How to support low dependency, low change impact and increased reuse? 如何保证设计方案支持低的依赖性.低的变化影响度.增加可重用性?3.2 耦合的定义Coupling 耦合: 一个元素与其它元素的联接.感知以及依赖程度的度量 Measure of how strongly one element is: connected to. has knowledge…