From: Brian Rogoff <bpr@best.com>
To: Xavier Leroy <Xavier.Leroy@inria.fr>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] petty complaints
Date: Mon, 2 Apr 2001 08:24:09 -0700 (PDT) [thread overview]
Message-ID: <Pine.BSF.4.21.0104020816540.7294-100000@shell5.ba.best.com> (raw)
In-Reply-To: <20010402153244.D30450@pauillac.inria.fr>
On Mon, 2 Apr 2001, Xavier Leroy wrote:
> > Another unrelated trifling question concerns the syntax of numerical
> > literals. Would it be possible to allow a la Ada the insertion of _s in
> > a numerical literal so instead of 1000000,10000000,and 100000000 we could
> > write 1_000_000, 10_000_000, 100_000_000? Of course, as in Ada, you could
> > allow wrongly positioned or superfluous _s (1_00_00_______0) but I think
> > this trivial change can make reading numbers a bit nicer.
Arrghhh, the Ada syntax allows arbitrary placement but no additional _s,
let this serve as an example to those who don't go right for the formal
syntax :-(. Here's the relevant part
based_numeral ::=
extended_digit {[underline] extended_digit}
extended_digit ::= digit | A | B | C | D | E | F
I was reminded of this feature of Ada when I was hacking some (OCaml, not
Ada!) config files and I had to look carefully at a params to make sure I
got the number of zeroes right.
-- Brian
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next prev parent reply other threads:[~2001-04-02 15:24 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-02 4:26 Brian Rogoff
2001-04-02 13:32 ` Xavier Leroy
2001-04-02 15:24 ` Brian Rogoff [this message]
2001-04-02 20:17 ` Chris Hecker
2001-04-02 19:45 ` Brian Rogoff
2001-04-09 5:23 ` John Max Skaller
2001-04-09 15:34 ` Christian Lindig
2001-04-09 16:01 ` Brian Rogoff
2001-04-09 16:24 ` David McClain
2001-04-09 16:29 ` Pierre Weis
2001-04-10 22:25 ` Marcin 'Qrczak' Kowalczyk
2001-04-24 15:23 [Caml-list] Petty complaints Brian Rogoff
2001-04-25 6:55 ` Fabrice Le Fessant
2001-04-25 7:00 ` Fabrice Le Fessant
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