-0400 (EDT)
Subject: Re: [racket-dev] Generics scoping issues
Mind you, I don't think this example -- using a method in a #:fast-defaults
predicate -- can work. The implementation of free-box will have to check
the predicate in order to perform generic dispatch, and the predicate has
to call fre
med to do the trick, oddly.
>>> -Ian
>>> ----- Original Message -
>>> From: "Carl Eastlund"
>>> To: "J. Ian Johnson"
>>> Cc: "dev"
>>> Sent: Friday, August 16, 2013 5:23:33 PM GMT -05:00 US/Canada Easter
[(def-free e gfree free bound avar [(x) (if (x . ∈ . bound) ∅ (set x))])])
>>
>> generic-problems.rkt:31:27: define/generic: free is not a method of
>> generic interfaces gen:binds-variables
>> at: free
>> in: (define/generic gfree free)
>>
>>
>>
>>
&g
iables seemed to do the trick, oddly.
> -Ian
> - Original Message -
> From: "Carl Eastlund"
> To: "J. Ian Johnson"
> Cc: "dev"
> Sent: Friday, August 16, 2013 5:23:33 PM GMT -05:00 US/Canada Eastern
> Subject: Re: [racket-dev] Generic
gen:binds-variables
at: free
in: (define/generic gfree free)
- Original Message -
From: "Carl Eastlund" < c...@ccs.neu.edu >
To: "J. Ian Johnson" < i...@ccs.neu.edu >
Cc: "dev" < dev@racket-lang.org >
Sent: Friday, August 16, 2013 4:
eric: free is not a method of
> generic interfaces gen:binds-variables
> at: free
> in: (define/generic gfree free)
>
>
> - Original Message -
> From: "Carl Eastlund"
> To: "J. Ian Johnson"
> Cc: "dev"
> Sent: Friday, Aug
To: "J. Ian Johnson"
Cc: "dev"
Sent: Friday, August 16, 2013 4:50:53 PM GMT -05:00 US/Canada Eastern
Subject: Re: [racket-dev] Generics scoping issues
Problem 1 -- you have to use define/generic if you want to use the generic
version of something in the context of a set of
Problem 1 -- you have to use define/generic if you want to use the generic
version of something in the context of a set of specific method
implementations. That's by design.
Problem 2 -- what error message or unexpected behavior are you getting?
That should work, it sounds like a bug in define/ge
I'm starting to use generics, and me being myself, I wrote some macros to make
writing method definitions easier.
But, I'm seeing that #:methods seems to rebind method identifiers in a way that
hygiene interferes with.
I would expect to be allowed to do the following two things (problems
annota
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