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
27
28
29
30
31
32
33
34
35
36
37
38
39
|
Module Example1.
CoInductive wrap : Type :=
| item : unit -> wrap.
Definition extract (t : wrap) : unit :=
match t with
| item x => x
end.
CoFixpoint close u : unit -> wrap :=
match u with
| tt => item
end.
Definition table : wrap := close tt tt.
Eval vm_compute in (extract table).
Eval vm_compute in (extract table).
End Example1.
Module Example2.
Set Primitive Projections.
CoInductive wrap : Type :=
item { extract : unit }.
CoFixpoint close u : unit -> wrap :=
match u with
| tt => item
end.
Definition table : wrap := close tt tt.
Eval vm_compute in (extract table).
Eval vm_compute in (extract table).
End Example2.
|
