Own-Programming-Language-Tutorial/examples/functions/chain.own

use "std"
use "functional"

data = [1,2,3,4,5,6,7,8,9]
chain(data,
  ::filter,  def(x) = x % 2 == 0,
  ::map,     def(x) = [x, x * x, x * x * x],
  ::sortby,  def(x) = -x[2],
  ::foreach, ::echo
)