As a follow-up to the discussion on the users list [http://lists.racket-lang.org/users/archive/2012-November/054973.html], I changed 'case' to use equal? comparison.
The diff, including additional tests and a doc change, is at [https://github.com/97jaz/racket/commit/731db72e8b9ddcba7b443478666cc278d2a898d0]. Performance on Clinger's benchmarks has improved since the last time I checked, even with the equal? change, so this must be due to unrelated optimization work. I did not implement the string optimization I mentioned in the thread on the users list. It occurred to me that (a) using string->symbol on the input would allocate if the symbol hadn't already been interned (which may come as a surprise to the user), and (b) the user probably ought to expect lexicographic equality tests if he uses strings, anyway. -Jon _________________________ Racket Developers list: http://lists.racket-lang.org/dev
