setdiff: Find the (asymmetric) difference between two collections of objects
Description
Find the (asymmetric) difference between two collections of objectsUsage
setdiff(x, y, ...)## S3 method for class 'default':
setdiff(x, y, ...)
## S3 method for class 'neuronlist':
setdiff(x, y, ...)
Arguments
x
the first collection to consider.
y
the second collection to consider.
...
additional arguments passed to methods
Value
- A collection of the same mode as 
x that contains all elements
  of x that are not present in y. 
Details
Note that setdiff.default calls base::setdiff to ensure consistent
  behaviour for regular vectors.  As a convenience setdiff.neuronlist allows y, the second
  collection, to be a character vector of names.