blob: 64d30ba2de19cf5d65b5badcdb72031e829a2e24 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
con currier = fold (fn nm => fn t => fn acc => t -> acc) {}
signature S = sig
type t
val x : t
con rs :: {Type}
val create : currier rs -> t
end
functor Currier (M : sig con rs :: {Type} end) : S where con rs = M.rs = struct
val currier : rs :: {Type} -> currier rs =
fold [currier] (fn nm :: Name => fn t :: Type => fn rest :: {Type} => fn acc => fn x : t => acc) {}
type t = currier M.rs
val x = currier [M.rs]
con rs = M.rs
val create : t -> t = fn x => x
end
structure ChefsSpecial = Currier(struct
con rs = [A = int, B = float]
end)
val main = ChefsSpecial.x
|