[plt-scheme] Is there a set data-type?

From: Carl Eastlund (carl.eastlund at gmail.com)
Date: Fri Feb 5 09:21:37 EST 2010

On Fri, Feb 5, 2010 at 9:12 AM, Matthias Felleisen <matthias at ccs.neu.edu> wrote:
> On Feb 5, 2010, at 8:29 AM, Todd O'Bryan wrote:
>> What do people use for a set data-type? If there isn't one built-in,
>> we're going to use a hash-table with #t as all the values.
> Just a tease: how would you use hashtable to represent infinite sets?

Use #f as all the values?  ;)


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