path {kriens}

Compose all the function in a list

Description

It applies the compose opertor recursively on all the elements of the list provided as argument

Usage

path(fs)

Arguments

fs

The list of the functions that must be composed together (e.g: list(f1, f2, f3, ...)).

Value

A function of the type g(x, ret) result of the pairwise composition of each element in the list.

Author(s)

Matteo Provenzano
http://www.alephdue.com

Examples

# define a function that doubles its argument
times.two <- function(x, ret) {
  ret(x*2)
}

# define a function that loops over a list of list and double every element
loop <- forget(path(list(lapply, lapply, times.two)))

#returns list(list(2, 4, 6), list(8,10,12))
loop(list(list(1,2,3),list(4,5,6)))