[racket] Typeof

Use classes. 


On Apr 4, 2011, at 1:03 PM, Nadeem Abdul Hamid wrote:

> Store the functions go-1, go-2, etc. in whatever is produced by "e"?
> Such that you can do:
> 
>   ((func-of e) s)
> 
> --- nadeem
> 
> 
> 2011/4/4 José Lopes <jose.lopes at ist.utl.pt>:
>> I have a function which, at the moment, is performing manual dispatch:
>> 
>>      (cond ((something1? e) (go-1 s))
>>            ((something2? e) (go-2 s))
>>            (...))
>> 
>> Do you have any suggestions on how to avoid this manual dispatch?
>> 
>> José Lopes
>> 
>> On 04-04-2011 16:29, Shriram Krishnamurthi wrote:
>> 
>> Approximate our reconstruct?
>> 
>> --
>> Pardon terseness and mistakes -- sent from phone.
>> 
>> On Apr 4, 2011 11:24 AM, "Matthias Felleisen" <matthias at ccs.neu.edu> wrote:
>>> 
>>> Types are compile-time entities. They don't exist at run-time, so you
>>> can't query them at run-time.
>>> 
>>> If you mean the type-tags of objects, we don't provide direct access. You
>>> can approximate it ...
>>> 
>>> -- Matthias
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> On Apr 4, 2011, at 11:18 AM, José Lopes wrote:
>>> 
>>>> Hello,
>>>> 
>>>> How do I query the type of an expression?
>>>> 
>>>> Regards,
>>>> José Lopes
>>>> 
>>>> --
>>>> José António Branquinho de Oliveira Lopes
>>>> 58612 - MEIC-A
>>>> jose.lopes at ist.utl.pt
>>>> 
>>>> _________________________________________________
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>>> 
>>> 
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>> 
>> --
>> José António Branquinho de Oliveira Lopes
>> 58612 - MEIC-A
>> jose.lopes at ist.utl.pt
>> 
>> _________________________________________________
>>  For list-related administrative tasks:
>>  http://lists.racket-lang.org/listinfo/users
>>