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From: Jacques Garrigue <garrigue@math.nagoya-u.ac.jp>
To: cstork@ics.uci.edu
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] Polymorphic variants in the debugger
Date: Fri, 30 Sep 2005 07:31:51 +0300 (EEST)	[thread overview]
Message-ID: <20050930.073151.108743127.garrigue@math.nagoya-u.ac.jp> (raw)
In-Reply-To: <20050929194435.GA9903@anthony.ics.uci.edu>

From: Christian Stork <cstork@ics.uci.edu>

> What does it mean if the debugger prints a polymorphic variable as 
> 
> (ocd) print v
> v : [> `SomeVariantType.... ] 
>   = <variant>
> 
> instead of its concrete content?  Is the debugger lacking some
> information?  I know that for simple programs the debugger prints the
> concrete value.

It is the same phenomenon as
  v : 'a = <poly>

Namely, due to polymorphism, the debugger only knows about part of the
possible tags for v. If the actual tag is not in this list, it will
only print <variant>.

Jacques Garrigue


      reply	other threads:[~2005-09-30  4:56 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-09-29 19:44 Christian Stork
2005-09-30  4:31 ` Jacques Garrigue [this message]

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