From: Xah Lee <xah@xahlee.org>
To: help-gnu-emacs@gnu.org
Subject: what's "weakness" in elisp's hash table?
Date: Thu, 3 Jan 2008 08:43:09 -0800 (PST) [thread overview]
Message-ID: <be001af5-0978-48c1-975e-2fe461f712e3@s8g2000prg.googlegroups.com> (raw)
in emacs lisp, when creating a hash table, there's the “:weakness”
thing.
See
http://xahlee.org/elisp/Creating-Hash.html
what does that mean? Suppose if i do
(setq myhash (make-hash-table :test 'equal :weakness 'key))
(puthash "mary" "19" myhash)
...
Then, the "mary" would disappear if i don't access it??
Xah
xah@xahlee.org
\xAD\xF4 http://xahlee.org/
next reply other threads:[~2008-01-03 16:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-03 16:43 Xah Lee [this message]
2008-01-03 21:15 ` what's "weakness" in elisp's hash table? Tassilo Horn
2008-01-06 9:45 ` =?ISO-8859-1?Q?what's_"weakness"_in_elisp's_hash_table??= Tim X
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