From: Dustin Sallings <dustin@spy.net>
To: Richard Jones <rich@annexia.org>
Cc: Tyler Eaves <tyler@ml1.net>, caml-list@inria.fr
Subject: Re: [Caml-list] Frustrated Beginner
Date: Tue, 23 Dec 2003 12:23:15 -0800 [thread overview]
Message-ID: <D6A1DD04-3585-11D8-9A95-000393CB0F1E@spy.net> (raw)
In-Reply-To: <20031223121657.GB29933@redhat.com>
On Dec 23, 2003, at 4:16, Richard Jones wrote:
> I like to think of the 'string option' type as being a bit like
> two concepts in more familiar languages:
>
> (1) NULL pointers in C, or
> (2) Scalars in Perl, which can be 'undef'.
I think of it more like SQL. Any given variable may be defined to be
nullable or not, but a variable that is not nullable an never be null.
The main difference is that the compiler enforces that you check for
null on nullable fields.
--
SPY My girlfriend asked me which one I like better.
pub 1024/3CAE01D5 1994/11/03 Dustin Sallings <dustin@spy.net>
| Key fingerprint = 87 02 57 08 02 D0 DA D6 C8 0F 3E 65 51 98 D8 BE
L_______________________ I hope the answer won't upset her. ____________
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next prev parent reply other threads:[~2003-12-23 20:29 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-23 4:03 Tyler Eaves
2003-12-23 4:19 ` jayanta nath
2003-12-23 5:34 ` Matt Gushee
2003-12-23 6:11 ` Tyler Eaves
2003-12-23 6:21 ` Michael Vanier
2003-12-23 6:31 ` Michael Jeffrey Tucker
2003-12-23 12:16 ` Richard Jones
2003-12-23 20:23 ` Dustin Sallings [this message]
2003-12-23 6:32 ` Shawn Wagner
2003-12-23 6:43 ` Matt Gushee
2003-12-23 5:58 ` Dustin Sallings
[not found] ` <EAEE2FF2-3510-11D8-B3A1-000A9584A16E@ml1.net>
2003-12-23 6:53 ` Dustin Sallings
2003-12-23 7:23 ` Tyler Eaves
2003-12-23 8:26 ` Dustin Sallings
2003-12-23 6:20 ` Tom Murray
2003-12-23 8:52 ` Stefano Zacchiroli
2003-12-23 16:47 ` [Caml-list] Ocaml syntax David Brown
2003-12-23 20:19 ` Dustin Sallings
2003-12-23 21:03 ` Eric Merritt
2003-12-23 21:52 ` brogoff
2003-12-24 10:27 ` skaller
2003-12-24 11:42 ` Peter Jolly
2003-12-24 12:19 ` skaller
2003-12-30 8:14 ` dmitry grebeniuk
2003-12-30 17:48 ` David Brown
2003-12-23 10:26 ` [Caml-list] Frustrated Beginner Samuel Lacas
2003-12-23 11:01 ` Dustin Sallings
2003-12-23 14:34 ` Oleg Trott
2003-12-23 20:25 ` Dustin Sallings
2003-12-23 16:11 ` Brian Hurt
2003-12-23 16:20 ` Sven Luther
2003-12-23 16:52 ` David Brown
2003-12-23 20:32 ` Dustin Sallings
2003-12-24 10:41 ` Issac Trotts
2003-12-23 17:39 ` Brian Hurt
2003-12-24 9:35 ` Jacques Garrigue
2003-12-24 9:49 ` skaller
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