From: Yang Shouxun <yangsx@fltrp.com>
To: caml-list@inria.fr
Subject: Re: [Caml-list] "in" question
Date: Fri, 22 Nov 2002 08:29:32 +0800 [thread overview]
Message-ID: <200211220829.32967.yangsx@fltrp.com> (raw)
In-Reply-To: <170826586F3BD511910D0200C110AAA8032B4F3C@memail03.bco-home.com>
On Friday 22 November 2002 07:35, mzukowski@yci.com wrote:
> I've been working through Jason Hickey's introduction to Objective Caml and
> don't quite get why the "in" is necessary in this construct:
>
> # let sum i = let sum2 j = i + j in sum2 ;;
> val sum : int -> int -> int = <fun>
>
> If I leave out the "in" I get a generic "Syntax error":
>
> # let sum i = let sum2 j = i + j ;;
> Characters 31-33:
> let sum i = let sum2 j = i + j ;;
In OCaml "let" can be used in two ways:
1. toplevel declaration "let"
2. local declaration "let...in"
Since "let sum2" is not toplevel, it must be the local form "let...in".
-------------------
To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr
Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/
Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
prev parent reply other threads:[~2002-11-22 0:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-21 23:35 mzukowski
2002-11-22 0:04 ` Alessandro Baretta
2002-11-22 0:29 ` Yang Shouxun [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=200211220829.32967.yangsx@fltrp.com \
--to=yangsx@fltrp.com \
--cc=caml-list@inria.fr \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).