invisible {base}

R Documentation

Change the Print Mode to Invisible

Description

Return a (temporarily) invisible copy of an object.

Usage

invisible(x = NULL)

Arguments

x	an arbitrary R object, by default NULL.

Details

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.

This is a primitive function.

References

Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.

See Also

withVisible, return, function.

Examples

# These functions both return their argument
f1 <- function(x) x
f2 <- function(x) invisible(x)
f1(1)  # prints
f2(1)  # does not

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