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## And/Then/When

使用Pattern和Plan作為中介，將兩個或多個Observable發射的數據集合并到一起

![and/then/when](https://box.kancloud.cn/a75c5eab0621668b5a3bcc74b56d8e51_1280x1040.png)

And/Then/When操作符組合的行為類似于`zip`，但是它們使用一個中間數據結構。接受兩個或多個Observable，一次一個將它們的發射物合并到`Pattern`對象，然后操作那個`Pattern`對象，變換為一個`Plan`。隨后將這些`Plan`變換為Observable的發射物。

![and/then/when](https://box.kancloud.cn/0c39f620de282333208b2095a4e32d1a_1280x1040.png)

它們屬于`rxjava-joins`模塊，不是核心RxJava包的一部分。

                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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