caml-list - the Caml user's mailing list
 help / color / mirror / Atom feed
From: henridf@lcavsun1.epfl.ch
To: caml-list@inria.fr
Subject: [Caml-list] 'should have type unit' warning in 'let _ =' ?
Date: Tue, 15 Jul 2003 02:29:51 +0200 (CEST)	[thread overview]
Message-ID: <Pine.LNX.4.44.0307150220570.6294-100000@lcmpc4.epfl.ch> (raw)

hi, 

i had a minor bug where the last expression in a 
let _ = ...
block of my module was not fully applied and hence was returning a 
functional value rather than apply the function (because I had added a 
parameter to the function).

pretty harmless, but it led me to wonder why I wasn't writing 'let () = 
..' for all my module initialization blocks, which would have given me 
'warning should have type unit' in the above situation.

So is there a reason why the commonly used idiom seems to be 'let _ =' 
rather than 'let () = '? 

Thanks

Henri


-------------------
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


             reply	other threads:[~2003-07-15  0:29 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-07-15  0:29 henridf [this message]
2003-07-15  1:04 ` Jacques Garrigue
2003-07-15 11:36   ` Richard Jones
2003-07-16  0:10     ` Jacques Garrigue
2003-07-16  7:11       ` Jean-Christophe Filliatre

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=Pine.LNX.4.44.0307150220570.6294-100000@lcmpc4.epfl.ch \
    --to=henridf@lcavsun1.epfl.ch \
    --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).