if TRUE discards duplicated trimmed matrices. This
alternative is recommended if n is small, because the
probability of obtaining the same trimmed matrix in different runs
increases as n decreases.
strat
Flag indicating whether execution is to be "sequential"
or "parallel". Default is "sequential",
resolves R expressions sequentially in the current R
process. If "parallel" resolves R expressions in parallel in
separate R sessions running in the background.
cl
Number of cluster to be used for parallel computing.
parallelly::availableCores()
returns the number of clusters available.
Default is cl = 1 resulting in "sequential" execution.