iff: Apply a function if and only if test is TRUE
Description
otherwise return input value unchanged
Usage
iff(obj, test, fun, ...)iffn(obj, test, fun, ...)
Arguments
- obj
object to apply test and fun to
- test
logical or function to apply to test
- fun
function to apply
- ...
passed on to test
Details
iffn is ... if and only if test is FALSE