In August of 2003 Thomas Lumley added
R 1.8.1. This gave
R users an explicit Lisp-style quasiquotation capability.
bquote() and quasiquotation are actually quite powerful. Professor Thomas Lumley should get, and should continue to receive, a lot of credit and thanks for introducing the concept into
bquote() is already powerful enough to build a version of
dplyr 0.5.0 with quasiquotation semantics quite close (from a user perspective) to what is now claimed in
Let’s take a look at that.
Continue reading Quasiquotation in R via bquote()
One thing that is sure to get lost in my long note on macros in
R is just how concise and powerful macros are. The problem is macros are concise, but they do a lot for you. So you get bogged down when you explain the joke.
Let’s try to be concise.
Continue reading Parameterizing with bquote
Jonathan Carroll had a an interesting
R language idea: to use
@-notation to request value substitution in a non-standard evaluation environment (inspired by msyql User-Defined Variables).
He even picked the right image:
Continue reading Another R [Non-]Standard Evaluation Idea