From: "Daniel Bünzli" <daniel.buenzli@erratique.ch>
To: Yaron Minsky <yminsky@janestreet.com>
Cc: OCaml List <caml-list@inria.fr>
Subject: Re: [Caml-list] [ANN] Hmap 0.8.0
Date: Tue, 8 Mar 2016 15:24:10 +0100 [thread overview]
Message-ID: <D7C79914D7A246CB9C42885C5FD02DC1@erratique.ch> (raw)
In-Reply-To: <CACLX4jTiLGbCTeMwT0gnms4dx7mVvXNtVr1-kMYSDon3MhU+pg@mail.gmail.com>
Le mardi, 8 mars 2016 à 13:44, Yaron Minsky a écrit :
> I'm curious if you've looked at Core_kernel's Univ_map?
No, I just abstracted code I've been c&p around in a lot of projects.
> Our type witnesses are a little interesting in that you can derive new witnesses from old ones (e.g., if a equals a', and b equals b', then a * b equals a' * b'). That said, I'm not sure that this is relevant for the heterogenous map use case.
The type identifiers are an implementation detail. I used to implement this using a universal type, see e.g. [1], but the type identifier implementation allocates less and should be more efficient (but the latter I didn't measure).
Best,
Daniel
[1] http://alan.petitepomme.net/cwn/2010.02.09.html#1
prev parent reply other threads:[~2016-03-08 14:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-08 9:42 Daniel Bünzli
2016-03-08 12:44 ` Yaron Minsky
2016-03-08 14:24 ` Daniel Bünzli [this message]
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