Safely creating S3 Generics in R

Question

Henrik Bengtsson has provided the internet with a nice way of creating S3 generics in R without having to bother whether they were already created before... in 2002.

Wha

Answer 1

You can use isGenericS3 function of the R.methodsS3 package. Please see the code below:

library(R.methodsS3)
isGenericS3(anova)
# [1] TRUE