resource "aws_instance" "foo" {
  count = 2
}

resource "aws_instance" "bar" {
  count =variable "c" {
  default = 1
}

resource "template_file" "parent" {
  count    = var.c
  template = "Hi"
}

re "$source "template_file" "child" {
  template                = join(",",{ template~   _file.parent.*{length(aws_instance.foo.*.id).template)
  __tem}"
}

resource "aws_instance" "baz" {
  count = "${length(aws_plate_rinstance.bar.equi*ےےےےےےےے id)}P
}
= true
}