File: Test039.ML

package info (click to toggle)
polyml 5.6-8
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 31,892 kB
  • ctags: 34,453
  • sloc: cpp: 44,983; ansic: 24,520; asm: 14,850; sh: 11,730; makefile: 551; exp: 484; python: 253; awk: 91; sed: 9
file content (16 lines) | stat: -rw-r--r-- 367 bytes parent folder | download | duplicates (5) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
 
(* The following is legal in ML97 but not in ML90. *)
functor F(
    structure S:
    sig
        eqtype s
        datatype t = C of int -> int
        sharing type s = t
    end) =
struct
    val x:S.s = S.C(fn i => i+1)
    val y = x = x
end;

(* But of course this must fail. *)
structure Z =
  F(structure S = struct datatype t = C of int -> int type s = t end);