Operators acting on objects to extract or replace parts.
# S4 method for DiversityIndex,ANY,missing
# S4 method for RefineCA,ANY,missing
# S4 method for PermutationOrder,ANY,missing
An object from which to extract element(s) or in which to replace
character string specifying elements to extract.
Any unambiguous substring can be given (see details).
A subsetted object.