Function SimplePipe.extend

Get more data from the pipe. The parameter indicates the desired number of elements to add to the end of the window. If 0 is passed, then it is up to the implementation of the pipe to determine the optimal number of elements to add.

size_t extend (
  size_t elements


elements Number of elements requested.


The number of elements added. This can be less than or more than the parameter, but will only be 0 when no more elements can be added. This signifies EOF.