RosettaCodeData/Task/Apply-a-callback-to-an-array/Wren/apply-a-callback-to-an-array.wren

var arr = [1, 2, 3, 4, 5]
arr = arr.map { |x| x * 2 }.toList
arr = arr.map(Fn.new { |x| x / 2 }).toList
arr.each { |x| System.print(x) }