[scheme-reports-wg2] Re: [Scheme-reports] Seeking review of sets and hash tables proposals
John Cowan 28 May 2013 01:51 UTC
Alex Shinn scripsit:
> I also think the following utility is nice, as there is no other
> existing utility to use a hash-table as a cache with a single
> operation:
>
> (hash-table-ref/cache! table key thunk)
> => (hash-table-search
> table key
> (lambda (value update remove)
> value)
> (lambda (insert)
> (let ((res (thunk)))
> (insert res)
> res)))
How is this different from hash-table-replace?
--
He made the Legislature meet at one-horse John Cowan
tank-towns out in the alfalfa belt, so that cowan@ccil.org
hardly nobody could get there and most of http://www.ccil.org/~cowan
the leaders would stay home and let him go --H.L. Mencken's
to work and do things as he pleased. Declaration of Independence
--
You received this message because you are subscribed to the Google Groups "scheme-reports-wg2" group.
To unsubscribe from this group and stop receiving emails from it, send an email to scheme-reports-wg2+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.