From: Gregory Marton <gremio@mit.edu>
To: Neil Jerram <neil@ossau.uklinux.net>
Cc: bug-guile@gnu.org
Subject: Re: [bug #22022] hashx-set! and -ref
Date: Thu, 17 Jan 2008 19:30:08 -0500 (EST) [thread overview]
Message-ID: <Pine.LNX.4.62.0801171928360.6868@ashmore.csail.mit.edu> (raw)
In-Reply-To: <87d4s0cag8.fsf@ossau.uklinux.net>
Thank you. I did something far less elegant already, but it's good to have
this. I should also read all of my email before responding. :-)
Best wishes,
Grem
> Gregory Marton <INVALID.NOREPLY@gnu.org> writes:
>
>> As an enhancement request, it would be nice for the common case to be able to
>> pass a hash-function argument and assoc to make-hash-table or to have a
>> (make-hashx-table hash assoc [size]), and in either case to remember the hash
>> function so that resize works correctly.
>
> Last email on this topic for tonight...!
>
> Note that anyone wanting to implement this "saner" interface can
> straightforwardly do so in Scheme:
>
> (define hash-table-hash-fn (make-object-property))
>
> (define hash-table-assoc-fn (make-object-property))
>
> (define (make-hashx-table hash assoc . args)
> (let ((t (apply make-hash-table args)))
> (set! (hash-table-hash-fn t) hash)
> (set! (hash-table-assoc-fn t) assoc)
> t))
>
> (define (hashx-table-ref t key)
> (hashx-ref (hash-table-hash-fn t) (hash-table-assoc-fn t) t key))
>
> etc.
>
> Regards,
> Neil
>
>
>
>
>
--
------ __@ Gregory A. Marton http://csail.mit.edu/~gremio/
--- _`\<,_ .
-- (*)/ (*) Truth, Beauty, Love, and Darwinfish!
~~~~~~~~~~~~~~~~-~~~~~~~~_~~~_~~~~~v~~~~^^^^~~~~~--~~~~~~~~~~~~~~~++~~~~~~~
prev parent reply other threads:[~2008-01-18 0:30 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-14 22:40 [bug #22022] hashx-set! and -ref Gregory Marton
2008-01-17 21:52 ` Neil Jerram
2008-01-17 21:54 ` Gregory Marton
2008-01-17 23:02 ` Neil Jerram
2008-01-18 0:25 ` Gregory Marton
2008-01-17 21:57 ` Neil Jerram
2008-01-17 22:01 ` Gregory Marton
2008-01-17 22:45 ` Neil Jerram
2008-01-18 0:22 ` Gregory Marton
2008-01-29 22:28 ` Neil Jerram
2008-12-07 16:51 ` Neil Jerram
2008-01-17 23:13 ` Neil Jerram
2008-01-18 0:30 ` Gregory Marton [this message]
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