From: Per Bothner <per@bothner.com>
Cc: Guile Mailing List <guile-user@gnu.org>
Subject: Re: add printf.scm to ice-9?
Date: Mon, 08 Apr 2002 22:05:37 -0600 [thread overview]
Message-ID: <3CB26891.3060201@bothner.com> (raw)
In-Reply-To: Pine.LNX.4.21.0204082213290.6782-100000@ariel.lan.telltronics.org
Steve Tell wrote:
>>#|kawa:1|# (format "[~12,5e]" (sqrt 2))
>>[ 1.41421E+0]
>
> In guile, that's (format #f "[~12,5e]" (sqrt 2))
Kawa allows the #f (or more generally the "destination"
specification) to be omitted. I believe this was to
be compatible with some other Scheme implementations.
It certainly is needed for compatibility with SRFI-28,
which implies "many Scheme implementations" have a format
function that does not require the #f.
> I've wondered how one would translate somthing like
> (let ((w 12)(d 5)) (printf "%*,*e" w d (sqrt 2)))
> though.
>
> But how terrible would it really be to provide both format and printf?
Not terrible at all. In fact slib (and Kawa) provide both.
--
--Per Bothner
per@bothner.com http://www.bothner.com/per/
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next prev parent reply other threads:[~2002-04-09 4:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-07 16:09 add printf.scm to ice-9? Matthew R Wette
2002-04-07 20:30 ` Per Bothner
2002-04-09 2:43 ` Steve Tell
2002-04-09 4:05 ` Per Bothner [this message]
2002-04-28 15:10 ` Marius Vollmer
2002-04-07 23:53 ` Marius Vollmer
2002-04-14 19:32 ` Rob Browning
-- strict thread matches above, loose matches on Subject: below --
2002-04-06 22:00 Matthew R Wette
2002-04-07 10:42 ` Marius Vollmer
2002-04-07 14:38 ` Neil Jerram
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