From: Teemu Likonen <tlikonen@iki.fi>
To: ishi soichi <soichi777@gmail.com>
Cc: help-gnu-emacs@gnu.org
Subject: Re: loading hash-table from a file?
Date: Thu, 05 Jan 2012 11:24:14 +0200 [thread overview]
Message-ID: <87ipkqo62p.fsf@imladris.arda> (raw)
In-Reply-To: <CAEjRLuSVMqrjXLX5nHwR08Hp3pmkTC-WsJnx5tj35bXAbQzMEQ@mail.gmail.com> (ishi soichi's message of "Thu, 5 Jan 2012 14:16:41 +0900")
* 2012-01-05T14:16:41+09:00 * ishi soichi wrote:
> Say, I have a hundred key-value pairs, which are to be stored as
> hash-table. Can I save this as a (text?) file so that Emacs can load
> it when booting up?
Yes. Use the Lisp object printing functions to print to a buffer: PRINT,
PRIN1 or (FORMAT "%S" ...). Then read the printed object with READ which
turns it to a Lisp object again.
Here's an example of the idea:
;; Print
(with-temp-file "/tmp/test"
(let ((ht (make-hash-table)))
(puthash 'a 1 ht)
(puthash 'b 2 ht)
(print ht (current-buffer))))
;; Read
(with-current-buffer
(find-file-noselect "/tmp/test")
(let ((ht (read (current-buffer))))
(list (gethash 'a ht)
(gethash 'b ht))))
prev parent reply other threads:[~2012-01-05 9:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-05 5:16 loading hash-table from a file? ishi soichi
2012-01-05 8:35 ` Valentin Baciu
2012-01-05 9:11 ` Teemu Likonen
2012-01-05 9:13 ` ishi soichi
2012-01-05 9:07 ` Eric Abrahamsen
2012-01-06 16:43 ` Thierry Volpiatto
2012-01-07 2:16 ` Eric Abrahamsen
2012-01-05 9:24 ` Teemu Likonen [this message]
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