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Re: Rationalising c[ad]\{2,5\}r.
From: |
Alan Mackenzie |
Subject: |
Re: Rationalising c[ad]\{2,5\}r. |
Date: |
Wed, 11 Mar 2015 23:00:54 +0000 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
Hi, Thien-Thi.
On Wed, Mar 11, 2015 at 11:15:53PM +0100, Thien-Thi Nguyen wrote:
> () Alan Mackenzie <address@hidden>
> () Wed, 11 Mar 2015 21:43:24 +0000
> Comments?
> Bravo!
> (defun gen-cXXr--make-seq (bits)
> "Generate a list of all integers with BITS bits, in ascending order."
> (let ((x (lsh 1 bits))
> acc)
> (while (> x 0)
> (setq x (1- x))
> (push x acc))
> acc))
> You can save some lines by using ‘number-sequence’:
Thanks, I didn't know about `number-sequence'. I'll start using it.
Just one thing, though, since `number-sequence' is also defined in
subr.el, I'd have to wrap it in `eval-and-compile' to be able to use it
in my macros.
> (defun gen-cXXr--make-seq (bits)
> "Generate a list of all integers with BITS bits, in ascending order."
> (number-sequence 0 (1- (lsh 1 bits))))
That's short enough that I might not really need the function
`gen-cXXr--make-seq'.
> I wonder (idly) if the number of ‘(number-sequence 0 (1- ...))’
> in the codebase justifies adding ‘iota’. Hmmm.
`iota'? A Greek letter, or a tiny amount. I'm afraid you've lost me.
;-)
> --
> Thien-Thi Nguyen
> GPG key: 4C807502
> (if you're human and you know it)
> read my lisp: (responsep (questions 'technical)
> (not (via 'mailing-list)))
> => nil
--
Alan Mackenzie (Nuremberg, Germany).
- RE: Rationalising c[ad]\{2,5\}r., (continued)
Re: Rationalising c[ad]\{2,5\}r., Alan Mackenzie, 2015/03/12
Re: Rationalising c[ad]\{2,5\}r., Thien-Thi Nguyen, 2015/03/11
- Re: Rationalising c[ad]\{2,5\}r.,
Alan Mackenzie <=
- Re: Rationalising c[ad]\{2,5\}r., Artur Malabarba, 2015/03/11
- Re: Rationalising c[ad]\{2,5\}r., Alan Mackenzie, 2015/03/12
- Re: Rationalising c[ad]\{2,5\}r., Artur Malabarba, 2015/03/12
Re: Rationalising c[ad]\{2,5\}r., Stefan Monnier, 2015/03/12
Re: Rationalising c[ad]\{2,5\}r., Alan Mackenzie, 2015/03/13
RE: Rationalising c[ad]\{2,5\}r., Drew Adams, 2015/03/13
Re: Rationalising c[ad]\{2,5\}r., Stefan Monnier, 2015/03/13
Re: Rationalising c[ad]\{2,5\}r., Alan Mackenzie, 2015/03/13