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[Caml-list] Python's yield, Lisp's call-cc or C's setjmp/longjmp in OCaml
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Date: -- (:)
From: Dustin Sallings <dustin@s...>
Subject: Re: [Caml-list] Python's yield, Lisp's call-cc or C's setjmp/longjmp in OCaml

On Dec 16, 2003, at 22:30, ijtrotts@ucdavis.edu wrote:

> Why not do this:
>
> # let rec number() =
>    let i=ref(-1) in fun() ->
>     incr i;
>     !i, if !i mod 2 = 0 then "Even" else "Odd";;
> val number : unit -> unit -> int * string = <fun>
> # let n=number();;
> val n : unit -> int * string = <fun>
> # Array.init 10 (fun _ -> n());;
> - : (int * string) array =
> [|(0, "Even"); (1, "Odd"); (2, "Even"); (3, "Odd"); (4, "Even"); (5, 
> "Odd");
>   (6, "Even"); (7, "Odd"); (8, "Even"); (9, "Odd")|]
>
> ?
>
> Issac

	That's nice.  Given this type of construct and raise, is there 
anything you can do with a continuation that would really be missed?  
(I'm showing my ignorance of the value of call/cc)

--
SPY                      My girlfriend asked me which one I like better.
pub  1024/3CAE01D5 1994/11/03 Dustin Sallings <dustin@spy.net>
|    Key fingerprint =  87 02 57 08 02 D0 DA D6  C8 0F 3E 65 51 98 D8 BE
L_______________________ I hope the answer won't upset her. ____________

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