Chris and I started this blog as an outlet for the work we were already doing every day: writing code and trying to avoid forgetting how we wrote it. To that end, gist.github.com is an extremely useful resource, and this blog allows us to add a little bit of context to our own public Gist repositories.

I convinced Chris to let us call the blog is.R(), over his mild protest. is.R() is a function that indicates whether the user is running R (typically as opposed to S).

I was introduced to this essential function by Hadley Wickham (of course), and the documentation is endearingly entitled with a question.

The following Gist illustrates the proper use of is.R():