Yes, but this is weird in the opposite way: Welcome to DrRacket, version 5.0.2 [3m]. Language: Beginning Student; memory limit: 128 MB. > (member? 1 (list 2 3 4 1)) true > (member 1 (list 2 3 4 1)) true >
On Thu, Nov 11, 2010 at 10:36 AM, Matthias Felleisen <matth...@ccs.neu.edu> wrote: > > Welcome to DrRacket, version 5.0.99.2--2010-11-11(686ec83/g) [3m]. > Language: Beginning Student. >> (member? 1 (list 2 3 4 1)) > true > > > > On Nov 11, 2010, at 10:32 AM, Shriram Krishnamurthi wrote: > > In fact, I proposed adding the ? forms of these functions where the new ones > are strictly boolean. > > These are essential for the SLs since the standard versions are useless due > to the true/false tests in the language. > > On Nov 11, 2010 6:44 AM, "Jay McCarthy" <jay.mccar...@gmail.com> wrote: > > I agree with Mark. I often write ? versions of functions like member > in my code when I write it the first time to show the "predicate > intent". > > Another important case is when you don't want internal values to > "escape" to the client because you forget that member/and/etc return > the thing, not #t. > > Jay > > On Thu, Nov 11, 2010 at 6:07 AM, Sam Tobin-Hochstadt <sa...@ccs.neu.edu> > wrote: >> On Thu, Nov 11, 2... > > -- > Jay McCarthy <j...@cs.byu.edu> > Assistant Professor / Brigham Young University > http://faculty.cs.byu.edu/~jay > > "The glory of God is Intelligence" - D&C 93 > > _________________________________________________ > For list-related administrative tasks: > http://... > > _________________________________________________ > For list-related administrative tasks: > http://lists.racket-lang.org/listinfo/users > > _________________________________________________ > For list-related administrative tasks: > http://lists.racket-lang.org/listinfo/users > -- Nadeem Abdul Hamid Associate Professor, Computer Science Berry College PO Box 5014 2277 Martha Berry Hwy NW Mount Berry, GA 30149-5014 (706) 368-5632 http://cs.berry.edu/~nhamid/ _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
