Variables in pipelines

Jose jgetino at
Wed Aug 15 12:33:04 PDT 2012

Let suppose I want to do some operations in a stream of rectangles: rotate
them and finding the intersection of the rotateded rectangles with the
original ones:


Here "tap" refers to the discusion on forEach

The problem is that being r1 a dummy variable, its reference is lost in the
next link of the chain.

It would be possible and desirable to keep the references of the variables
inside a pipeline?. 

Maybe you can use BiMapper to keep trace of another variable, but the code
would be much more cumbersome. 
Not to say if you want to reuse two o more variables along the pipeline.

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