Created
July 29, 2019 12:36
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question about constraint syntax
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| utop # type t = unit -> (string, string, 'a) Map.t option constraint 'a = String.comparator_witness;; | |
| type t = unit -> (string, string, String.comparator_witness) Map.t option | |
| utop # let f : 'a. unit -> (string, string, 'a) Map.t option constraint 'a = String.comparator_witness = fun () -> failwith "hello";; | |
| Error: Syntax error | |
| utop # let f : unit -> (string, string, 'a) Map.t option constraint 'a = String.comparator_witness = fun () -> failwith "hello";; | |
| Error: Syntax error |
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