Paren {base} | R Documentation |
Open parenthesis, (
, and open brace, {
, are
.Primitive
functions in R.
Effectively, (
is semantically equivalent to the identity
function(x) x
, whereas {
is slightly more interesting,
see examples.
( ... ) { ... }
if
, return
, etc for other objects used in
the R language itself.
f <- get("(") e <- expression(3 + 2 * 4) f(e) == e # TRUE do <- get("{") do(x_ 3, y_ 2*x-3, 6-x-y); x; y