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Re: Immutable rnrs hashtable

From: Ian Price
Subject: Re: Immutable rnrs hashtable
Date: Mon, 26 Nov 2012 10:28:39 +0000
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux)

Sjoerd van Leent Privé <address@hidden> writes:

> Btw, isn't their a hashtable which is more pure in it's
> implementation? The RNRS and SRFI-69 versions are having quite some
> side-effects. I would have expected a method like "hashtable-add"
> which copies an existing hashtable, adds values and returns a new
> hashtable. I know, I prefer pure functional implementations...

You could look up vhashes in the manual. Alternatively, if your data
has an ordering you can use (pfds bbtrees) from my pfds collection[0]

0. or guild install pfds
Ian Price --

"Programming is like pinball. The reward for doing it well is
the opportunity to do it again" - from "The Wizardy Compiled"

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