Re: member

[Emanuel Berg]

"Pascal J. Bourguignon" <pjb@informatimago.com>
writes:

> If you just want a more concise result

I'm fine using `member' as a "false predicate", and
I don't think it is bad or that it should be changed.

> you can use position or find instead of member.
> As predicates, they're equivalent.

`find' seems to be the same and thus better than `car'
+ member. `position' is good when what should be
determined is the... position of the item.

    (find 2 '(1 2 3 4))       ; 2
    (find 6 '(1 2 3 4 5))     ; nil
    (position 1 '(1 2 3 4))   ; 0 (zero-indexed; N.B. (when 0 t) ; t)
    (position 6 '(1 2 3 4 5)) ; nil

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