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Re: performance of converting alist to hash table
From: |
Andreas Schwab |
Subject: |
Re: performance of converting alist to hash table |
Date: |
Sun, 16 May 2004 16:02:00 +0200 |
User-agent: |
Gnus/5.110002 (No Gnus v0.2) Emacs/21.3.50 (gnu/linux) |
Dai Yuwen <address@hidden> writes:
> I use `mapc' like this:
> (defun convert-alist-to-hash (table w)
> (mapc (lambda (e)
> (puthash (car e) (cadr e) table))
> w))
>
> Almost the same time needed. (I made a mistake in the previous email, it
> should be 30 seconds instead of 15.)
How did you create the hash table? You should probably start with a
larger hash table than the default to avoid too many resize operations.
Andreas.
--
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux AG, Maxfeldstraße 5, 90409 Nürnberg, Germany
Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
- performance of converting alist to hash table, Dai Yuwen, 2004/05/16
- Re: performance of converting alist to hash table, Ted Zlatanov, 2004/05/17
- Re: performance of converting alist to hash table, Miles Bader, 2004/05/17
- Re: performance of converting alist to hash table, Dai Yuwen, 2004/05/18
- Re: performance of converting alist to hash table, Stefan Monnier, 2004/05/18
- Re: performance of converting alist to hash table, Dai Yuwen, 2004/05/19
- Re: performance of converting alist to hash table, Kenichi Handa, 2004/05/19
- Re: performance of converting alist to hash table, Dai Yuwen, 2004/05/26
- Re: performance of converting alist to hash table, Kenichi Handa, 2004/05/27