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
- hydrographic control point
- hydrographic database
- hydrographic maps
- hydrographic net representation
- hydrographic remote sensing
- hydrographic survey
- hydrographic survey and chart drawing
- hydrographic survey equipment
- hydrographic survey in ancient China
- hydrographic surveying and charting equipment
- hydrographic survey ship
- hydrography
- hydrography and cartography
- hydrohematite
- hydroinformatics
- hydroiodination
- hydroisopleth
- hydro-junction
- hydrokinetics
- hydrolase
- hydrolase; hydrolytic enzyme
- hydrolocation
- hydrolocator
- hydrological cableway flow system equipment
- hydrological cycle