[R] Recommended way of requiring packages of a certain version?

[Hadley Wickham]

> So distributing code to other people is preferably done using R packages,
> which gives you this option.

However (as far as I am aware), note that this option is checked at
package build time, not at load time.

Hadley

-- 
Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University
http://had.co.nz/