From: Brian Hurt <bhurt@janestcapital.com>
To: Sam Steingold <sds@gnu.org>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] List.cons and "::"
Date: Tue, 17 Jul 2007 16:15:26 -0400 [thread overview]
Message-ID: <469D235E.9000008@janestcapital.com> (raw)
In-Reply-To: <469D2055.5080408@gnu.org>
Sam Steingold wrote:
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>Hash: SHA1
>
>Why is :: a syntax, not an infix version of List.cons
>(which for some reason is missing)?
>thanks.
>
>
So it can be used in pattern matching. Things used in pattern matching
the compiler has to know about, and thus the user can't override.
Things not used in pattern matching can be overridden. So you can
redefine + if you wanted to. I wouldn't recommend it, but you could.
:: and , you can't override.
Brian
next prev parent reply other threads:[~2007-07-17 20:15 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-17 20:02 Sam Steingold
2007-07-17 20:15 ` Brian Hurt [this message]
2007-07-17 20:38 ` [Caml-list] " Martin Jambon
2007-07-17 22:02 ` code17
2007-07-17 20:46 ` [Caml-list] " Chris King
2007-07-18 21:36 ` Pierre Etchemaïté
2007-07-17 22:33 ` Jon Harrop
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