[Openmcl-devel] Eq definition

[Mathieu Suen]

Do you mean that the (defun eq ..) define an other method that is not the same as the on use inside the body of the method 
(defun eq ..).
I guess  this is for debugging purpose.


On Mar 2, 2010, at 11:22 PM, Milan Jovanovic wrote:

> Try with different safety/speed settings and you will see the  
> difference.
> 
> On Mar 2, 2010, at 11:12 PM, Mathieu Suen wrote:
> 
>> On Mar 2, 2010, at 10:40 PM, Gary Byers wrote:
>>> 
>>> On Tue, 2 Mar 2010, Mathieu Suen wrote:
>>> 
>>>> Hi,
>>>> 
>>>> I read the source code of the eq function and find it quite odd:
>>>> 
>>>> (defun eq (x y)
>>>> "Return T if OBJ1 and OBJ2 are the same object, otherwise NIL."
>>>> (eq x y))
>>>> ;; /level-0/l0-pred.lisp
>>>> 
>>>> Is it because it's a primitive?
>>> 
>>> Yes.
>>> 
>>> For extra credit: try to define EQ in lisp without depending on
>>> the compiler to open-code EQ, e.g. :
>>> 
>>> (declaim (notinline eq))
>>> 
>>> (defun eq (x y)
>>> ;;; ????
>>> )
>>> 
>>> (This is a koan; if you think about it long enough, you'll either
>>> achieve enlightenment or get a bad headache.)
>>> 
>> 
>> :)
>> I guess that code never get interpreted so what is the purpose of it?
>> 
>>> 
>>>> 
>>>> Thanks
>>>> 	Mth
>>>> 
>> 
>> 
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