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Message-ID: <465C6A34.6050202@ed.ac.uk>
Date: Tue, 29 May 2007 19:00:20 +0100
From: Jeremy Yallop <jeremy.yallop@ed.ac.uk>
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Subject: tag hash function
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X-Spam: no; 0.00; hash:01 hash:01 reimplement:01 camlp:01 int:01 string:02 string:02 passing:04 i'd:05 extension:05 label:07 function:08 function:08 i'm:09 compute:09 

Is there any kind of guarantee that given the name of a tag `T as a 
string t that

  (Obj.magic (CamlinternalOO.public_method_label t) : int)

will compute the hash code used to represent t?  Is there a better way 
to access the hash function (passing a string, not a tag)?  Of course, I 
could reimplement it myself, but I'd like something that will track any 
changes to the internal function.

I'm trying to compute hash codes in a camlp4 extension.

Jeremy.