On Nov 11, 2010, at 10:50 AM, Nadeem Abdul Hamid wrote: > 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
That's a 'bug'. >> > > > 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
