| invisible {base} | R Documentation |
Return a (temporarily) invisible copy of an object.
invisible(x)
x |
an arbitrary R object. |
This function can be useful when it is desired to have functions return values which can be assigned, but which do not print when they are not assigned.
Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.
# These functions both return their argument f1 <- function(x) x f2 <- function(x) invisible(x) f1(1)# prints f2(1)# does not