apply or

apply or

[puzio1]

I noticed that it is not possible to feed logical connectives to "apply" as, for instance, the following examples



 (apply 'or '(t nil t nil))



 (apply 'and '(t nil t nil))



in emacs LISP because "or" and "and" are special forms as opposed to functions.  When I try these examples, I recieve the error message



 invalid-function #<subr and>



Whilst I can work around this difficulty using "member" or using "eval" and "cons", I wonder if there is a way of doing what I originally intended and directly feeding logical connectives to "apply" (or, for that matter, other functions which take a function as an argument). 





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Re: apply or

[Thien-Thi Nguyen]

"" <puzio1@excite.com> writes:

> Whilst I can work around this difficulty using "member" or using
> "eval" and "cons", I wonder if there is a way of doing what I
> originally intended and directly feeding logical connectives to
> "apply" (or, for that matter, other functions which take a
> function as an argument).

to map `and', look for `every'.
to map `or', look for `some'.

these are in (or are under) cl.el, iirc.

for the latter (parenthesized) part of your question, could you
give an example of such a function-taking-a-function?  maybe it is
not just me that is confused...

thi