On Mon, Nov 19, 2012 at 06:13:09AM -0700, Matthew Flatt wrote: > Should we change `case' to use `equal?' instead of `eqv?'? I can't > think of a good reason to stick with `eqv?'.
My first reaction to this was that such a change would eliminate one of the motivations for using `case': getting the (perhaps insignificant?) performance improvement of using `eqv?' in a conditional when you know the key type is suitable for it. However it occurs to me that since the datums in a `case' clause are always literals, couldn't the expansion of `case' be "smart" enough to use the appropriate comparison function (eq?/eqv?/equal?) given the type of the datum? David ____________________ Racket Users list: http://lists.racket-lang.org/users
