Remove a variable from the scope of the workers or specified worker.
Usage
"unexport"(.Object, xName, worker=NULL)
Arguments
.Object
a sleigh class object.
xName
a variable name (given as a quoted string in the function call).
worker
integer rank of the worker where the variable is defined.
The rank values range from 0 to workerCount - 1.
By default, the variable is removed from all workers in the sleigh.