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From: Jacques Garrigue <garrigue@math.nagoya-u.ac.jp>
To: ermine@ermine.pp.ru
Cc: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] class and printf
Date: Mon, 30 Oct 2006 22:21:36 +0900 (JST)	[thread overview]
Message-ID: <20061030.222136.93016075.garrigue@math.nagoya-u.ac.jp> (raw)
In-Reply-To: <20061030124223.GA46814@ermine.home>

From: Anastasia Gornostaeva <ermine@ermine.pp.ru>

> What I need to drink to compile it?
> 
> class foo ch =
> object
>  method myprintf = Printf.fprintf ch
> end
> 
> The compiler says 
> The method myprintf has type ('a, out_channel, unit) format -> 'a where 'a
> is unbound

Since I assume that you want to be able to use differently typed
formats with the same object,

class foo ch = object
  method myprintf : 'a. ('a, out_channel, unit) format -> 'a =
    Printf.fprintf ch
end

Jacques Garrigue


      parent reply	other threads:[~2006-10-30 13:22 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-10-30 12:42 Anastasia Gornostaeva
2006-10-30 12:47 ` [Caml-list] " Nicolas Pouillard
2006-10-30 13:28   ` Virgile Prevosto
2006-10-30 12:49 ` Jon Harrop
2006-10-30 13:21 ` Jacques Garrigue [this message]

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