Functions returning functions
Paulo Grahl wrote:
Dear All:
I have a question regarding the behavior of functions.
Say I define a function that returns another function :
A <- function(parameters) {
# calculations w/ parameters returning 'y'
tmpf <- function(x) { # function of 'y' }
return(tmpf)
}
The value of the parameters are stored in an environment local to the
function.
consider this example:
foo = function(a, b)
function(c)
if (c) a else b
x = 1
y = 2
bar = foo(x, y)
bar(TRUE)
# 1
x = 0
bar(TRUE)
# 1, not 0
y = 0
bar(FALSE)
# 0, not 2
vQ