From: Jesper Louis Andersen <jesper.louis.andersen@gmail.com>
To: Gabriel Scherer <gabriel.scherer@gmail.com>
Cc: "Sébastien Hinderer" <Sebastien.Hinderer@inria.fr>,
"caml users" <caml-list@inria.fr>
Subject: Re: [Caml-list] polymorphic sets?
Date: Tue, 29 Sep 2015 15:56:16 +0200 [thread overview]
Message-ID: <CAGrdgiX5mKThdAymhc1LzyQxZw8nQJmGdOhZBu45XUT_BFVi8g@mail.gmail.com> (raw)
In-Reply-To: <CAPFanBGKPcVi=_2_9CA_uRx8kOZVHy+6f4fwwCZQs5m_yMKUwA@mail.gmail.com>
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On Tue, Sep 29, 2015 at 2:58 PM, Gabriel Scherer <gabriel.scherer@gmail.com>
wrote:
> Note that the polymorphic sets (or maps) are less statically-safe than
> their functorized counterpart, because they are parametrized over their
> comparison function at creation time
The only point in time I've had troubles is when you have a map where its
values and keys range over a type that can recursively contain that map of
the same type. This required a polymorphic compare (from Core) to pull off.
--
J.
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next prev parent reply other threads:[~2015-09-29 13:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-29 12:43 Sébastien Hinderer
2015-09-29 12:58 ` Gabriel Scherer
2015-09-29 13:35 ` Simon Cruanes
2015-09-29 13:56 ` Jesper Louis Andersen [this message]
2015-09-29 14:52 ` Yaron Minsky
2015-09-29 15:13 ` Gabriel Scherer
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