working solution all in one snippet
type
Child* = ref object
value: int
Parent* = ref object
child: Child
proc set_value*(self: var Child, value: int): var Child {.discardable.} =
self.value = value
return self
proc return_child(child : var Child) : var Child {.discardable.} =
child
template get_child*(self : var Parent) : Child =
var child = Child()
self.child = child
return_child(child)
var parent = Parent()
parent.get_child().set_value(10)
Run
However I would use @mratsim's solution instead unless you are using objects
instead of ref objects.
