R compatibility with S version 4/Splus5+ support functions

Description

These objects ease the task of porting functions into R from S Version 4 and S-Plus 5.0 and later. See the documentation there. May be obsolete in the future.

Usage

usingR(major, minor)

Examples

## Not run: 
rc <- try(fetch(res, n = -1))
if(inherit(rc, ErrorClass))
   stop("could not fetch the data")

## End(Not run)

Results