Disabling the cat command

Question

Suppose I have the following function:

## Just an example
f = function() { 
  for(i in 1:10000)
      cat(i)
  return(1)
}

When I call

Answer 1

On Linux, you can use a sink() call to /dev/null(or to a temporary file on another OS, see ?tempfile) :

sink(file="/dev/null")
f()
sink()