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From: ludo@gnu.org (Ludovic Courtès)
To: guile-user@gnu.org
Subject: Re: Uploading Word documents, PDFs, PNG files etc
Date: Tue, 12 May 2009 12:33:16 +0200	[thread overview]
Message-ID: <873abazk43.fsf@gnu.org> (raw)
In-Reply-To: 7i0m1vaf.fsf@vps203.linuxvps.org

Sebastian Tennant <sebyte@smolny.plus.com> writes:

>  (define (upload name)
>    (and=> (uploads name) car))

[...]

> P.S. Documentation bug - the procedure 'and=>' is missing from the
>      manual.  What's the difference between the way the upload procedure
>      is written above and simply:
>
>       (define (upload name)
>         (car (uploads name)))

Using `and=>', `upload' returns `#f' if `uploads' returns `#f'.

Thanks,
Ludo'.





  reply	other threads:[~2009-05-12 10:33 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-10 16:21 Uploading Word documents, PDFs, PNG files etc Sebastian Tennant
2009-05-11 15:11 ` Ludovic Courtès
2009-05-11 15:55   ` Thien-Thi Nguyen
2009-05-11 23:17     ` Ludovic Courtès
2009-05-12  3:15 ` Thien-Thi Nguyen
2009-05-12 10:15   ` Sebastian Tennant
2009-05-12 10:33     ` Ludovic Courtès [this message]
2009-05-12 11:16       ` Sebastian Tennant
2009-05-13 14:02   ` Sebastian Tennant
2009-05-13 15:02     ` Ludovic Courtès
2009-05-13 18:01       ` Sebastian Tennant
2009-05-13 19:09       ` Sebastian Tennant
2009-05-13 19:23         ` Linas Vepstas
2009-05-14  3:47           ` Keith Wright
2009-05-14 12:49             ` Sebastian Tennant
2009-05-14 13:13               ` Sebastian Tennant
2009-05-17 21:55               ` Ludovic Courtès
2009-05-19  4:48                 ` Sebastian Tennant
2009-05-19  4:59                   ` Sebastian Tennant
2009-05-19  7:50                   ` Ludovic Courtès
2009-05-21  5:22                     ` Sebastian Tennant
2009-05-21 10:47                       ` Thien-Thi Nguyen

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