gistfile1.nim

import strutils

type
  TThing = ref object
    data: int
    children: seq[TThing]

proc `$`(t: TThing): string =
  result = "($1, $2)" % @[$t.data, join(map(t.children, proc(th: TThing): string = $th), ", ")]

proc somethingelse(): seq[TThing] =
  result = @[TThing(data: 20, children: @[])]

proc dosomething(): seq[TThing] =
  var atom = somethingelse()

  atom = @[TThing(data: 10, children: atom)]

  result = atom

when isMainModule:
  echo($dosomething()[0])