This thread is going to be a lot about matter of tastes, but at least
I would think of blah() as a constructor function and as.blah() as a
coerce function. There should always be one constructor function,
but providing coerce functions is optional.
Furthermore, the constructor function should be
When should we use one versus the other? If I'm designing an S3 class
"blah", should I just implement
blah <- function(x, ...) UseMethod("blah")
and then a bunch of blah.whatever() functions, including blah.default()?
Or should I do
as.blah <- function(x, ...) UseMethod("as.blah")
with a bunch
