[Caml-list] Specifying precedence ...

[Caml-list] Specifying precedence ...

[Andrzej M. Ostruszka]

Hello,

Is it possible to specify precedence of an "operator"?
E.g. if I have something like

let (^^) x y =
  let rec pow res y p =
    if y = 0 then res
    else
      let newres = if y land 1 <> 0 then res * p else res in
      pow newres (y lsr 1) (p*p)
  in
    pow 1 y x

then I'd like to evaluate 2*3^^2 to 18 (not 36).

						Best regards
-- 
    ____   _  ___
   /  | \_/ |/ _ \		Andrzej Marek Ostruszka
  / _ |     | (_) | Instytut Fizyki, Uniwersytet Jagiellonski (Cracow)
 /_/ L|_|V|_|\___/	(PGP <-- finger ostruszk@order.if.uj.edu.pl)
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Re: [Caml-list] Specifying precedence ...

[Jacques Garrigue]

From: "Andrzej M. Ostruszka" <ostruszk@order.if.uj.edu.pl>

> Is it possible to specify precedence of an "operator"?
> E.g. if I have something like
[...]
> then I'd like to evaluate 2*3^^2 to 18 (not 36).

This is section 6.7 of the ocaml 3.00 manual.
User defined operators have a fixed precedence, defined by their first
letter(s).

In this case, only operators starting by ** have higher precedence
than *, so you sould use ** or **...

     Jacques Garrigue
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