Re: member

[Pascal J. Bourguignon]

Emanuel Berg <embe8573@student.uu.se> writes:

> Barry Margolin <barmar@alum.mit.edu> writes:
>
>> It's no more misleading than MEMBER, which
>> intuitively seems like it would just return
>> a boolean, but actually returns the tail of the list
>> where the element was found.
>
> I guess one can do something like this. But probably
> it will only lead to even more confusion.
>
>     (defun memberp (e l)
>       (when (member e l) t) )
>
>     (memberp 1 '(1 2 3 4)) ; t
>     (memberp 0 '(1 2 3 4)) ; nil

If you just want a more concise result, you can use position or find
instead of member.  As predicates, they're equivalent.

-- 
__Pascal Bourguignon__                 http://www.informatimago.com/
“The factory of the future will have only two employees, a man and a
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