Last chance! 50% off unlimited learning
Sale ends in
function( arglist ) expr
return(value)formals (its argument
list), its body (expr in the ‘Usage’
section) and its environment which provides the
enclosure of the evaluation frame when the closure is used. There is an optional further component if the closure has been
byte-compiled. This is not normally user-visible, but it indicated
when functions are printed. If value is missing, NULL is returned. If it is a
single expression, the value of the evaluated expression is returned.
(The expression is evaluated as soon as return is called, in
the evaluation frame of the function and before any
on.exit expression is evaluated.)
If the end of a function is reached without calling return, the
value of the last evaluated expression is returned.
args. formals, body and
environment for accessing the component parts of a
function.
debug for debugging; using invisible inside
return(.) for returning invisibly.
norm <- function(x) sqrt(x%*%x)
norm(1:4)
## An anonymous function:
(function(x, y){ z <- x^2 + y^2; x+y+z })(0:7, 1)
Run the code above in your browser using DataLab