[racket-dev] [plt] Push #28706: master branch updated

(or/c #f x)

seems better than maybe/c because it is nearly the same length and it
is one less thing to memorize (and it's not like single-point of
control applies here because this can never change).

Robby

On Thu, May 8, 2014 at 6:17 PM, Matthias Felleisen <matthias at ccs.neu.edu> wrote:
>
> (We have maybe/c somewhere, and I think we should use it.)
>
>
> On May 8, 2014, at 4:19 PM, samth at racket-lang.org wrote:
>
>> samth has updated `master' from 98ae3d8b2d to e1ab2ffcf4.
>>  http://git.racket-lang.org/plt/98ae3d8b2d..e1ab2ffcf4
>>
>> =====[ One Commit ]=====================================================
>> Directory summary:
>> 100.0% pkgs/typed-racket-pkgs/typed-racket-lib/typed-racket/infer/
>>
>> ~~~~~~~~~~
>>
>> e1ab2ff Sam Tobin-Hochstadt <samth at cs.indiana.edu> 2014-05-08 16:18
>> :
>> | Fix contract.
>> |
>> | First bug caught with new test.  Thanks Robby!
>> :
>>  M .../typed-racket-lib/typed-racket/infer/infer-unit.rkt       | 2 +-
>>
>> =====[ Overall Diff ]===================================================
>>
>> pkgs/typed-racket-pkgs/typed-racket-lib/typed-racket/infer/infer-unit.rkt
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> --- OLD/pkgs/typed-racket-pkgs/typed-racket-lib/typed-racket/infer/infer-unit.rkt
>> +++ NEW/pkgs/typed-racket-pkgs/typed-racket-lib/typed-racket/infer/infer-unit.rkt
>> @@ -360,7 +360,7 @@
>>    (Type/c Type/c . -> . (or/c #f cset?))
>>    (cgen V X Y S T))
>>   (define/cond-contract (cg/inv S T)
>> -   (Type/c Type/c . -> . cset?)
>> +   (Type/c Type/c . -> . (or/c #f cset?))
>>    (cgen/inv V X Y S T))
>>   ;; this places no constraints on any variables in X
>>   (define empty (empty-cset X Y))
>
>
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