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what's "weakness" in elisp's hash table?
From: |
Xah Lee |
Subject: |
what's "weakness" in elisp's hash table? |
Date: |
Thu, 3 Jan 2008 08:43:09 -0800 (PST) |
User-agent: |
G2/1.0 |
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/
- what's "weakness" in elisp's hash table?,
Xah Lee <=