cran - Warning: replacing previous import ‘head’ when loading ‘utils’ in R

Question

When loading the RTextTools package from CRAN, I get the following warnings:

Warning messages:
1: replacing previous import ‘head’ when loading ‘utils’
2: replacing previous import ‘tail’ when loading ‘utils’

How do I get rid of these warnings? I'm the author of the package, so I can manipulate the source code; I'm looking for a solution that gets rid of the warnings rather than suppresses them. They seem to have appeared when I upgraded to R 2.14. Thank you in advance!

Answer 1

In general, this problem is often caused by having import(somepackage) in the namespace as well as importFrom(somepackage, somefunction).

Equivalently, using roxgyen2, having both #' @import somepackage and #' @importFrom somepackage somefunction.

The best practice solution is to remove the import statement ans keep only importFrom.