理学 设计模式 释 observer pattern 观察者模式 一种设计模式。定义一个对象与其他对象之间的一对多的依赖关系，当一个对象改变状态时，所有与它有依赖关系的对象都被通知并自动更新。又称依赖（dependents）模式、发布-订阅（publish-subscribe）模式。
软件工程 释文 observer pattern 观察者模式
- principal antiautomorphism
- principal approximate value
- principal argument
- principal automorphism
- principal axes
- principal axes of stress
- principal axis
- principal-axis method
- principal axis of inertia
- principal axis of strain
- principal axis solution
- principal axis transformation
- principal-axis transformation
- principal band
- principal base
- principal bending moment
- principal block
- principal branch
- principal bronchus
- principal bundle
- principal bundle connection
- principal category
- principal cell
- principal character
- principal circle