| formals {base} | R Documentation |
Get or set the formal arguments of a function.
formals(fun = sys.function(sys.parent())) formals(fun) <- list
fun |
a function object or a character string naming the function
to be manipulated.
If not specified, the function calling body is used. |
list |
a list of R expressions. |
formals returns the formal argument list of the function
specified.
The assignment form sets the formals of a function to the list on the right hand side.
args for a ``human-readable'' version,
alist,
body,
function.
length(formals(lm)) # the number of formal arguments names(formals(boxplot)) # formal arguments names f <- function(x)a+b formals(f) <- alist(a=,b=3) # function(a,b=3)a+b f(2) # result = 5