[R] Evaluation of functionals

Hadley Wickham h.wickham at auckland.ac.nz
Mon Apr 5 09:44:29 CEST 2004

 > Suppose I have
 >     f1 <- function(x) x
 >     f2 <- function(x) x^2
 >     funlist <- list(f1,f2)
 > Then I would like to evaluate funlist such that when x is 10 I should 
 > get a list with 10 and 100.

How about
sapply(funlist, function(x) x(10))

 > A related question is that of anonymous functions: how to evaluate
 > function(x)x^2 on x<-10 without assigning the function to a name?

(function(x) x^2)(10)


More information about the R-help mailing list