, here rv is empty  
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#include <libFN.h>


Public Member Functions | |
| vec | eval (const vec &cond) | 
| inherited  | |
| constfn (const vec &val0) | |
| Default constructor.  | |
| int | _dimy () const | 
| access function  | |
Protected Attributes | |
| int | dimy | 
| Length of the output vector.  | |
, here rv is empty 
 1.5.5