Nested function

editable example

Click the pencil to open this in an editor, change it, and run it in your browser. The same solution is posted on Rosetta Code.

ghul

use IO.Std.write_line

use Collections.LIST

use Ghul.Pipes

make_list(separator: string) -> string is

let counter mut = 0

let make_item = (item: string) => (

counter = counter + 1

"{counter}{separator}{item}"

)

let items = LIST[string]()

for item in ["first", "second", "third"] do

items.add(make_item(item))

od

return items |> join("\n")

si

write_line(make_list(". "))

1. first
2. second
3. third