[armedbear-devel] "Hardcoding" methods that funcall a symbol
Pascal J. Bourguignon
pjb at informatimago.com
Sun Dec 15 14:35:32 UTC 2013
Theam Yong Chew <senatorzergling at gmail.com> writes:
> I also updated java:jnew-runtime-class's docstring, but I'm not sure
> if the wording "function designator" is accurate enough, since
> (funcall '(lambda () 1)) => 1
>
> Would '(lambda () 1) be considered a FUNCTION DESIGNATOR?
CLHS Glossary says:
function designator n. a designator for a function; that is, an
object that denotes a function and that is one of: a symbol
(denoting the function named by that symbol in the global
environment), or a function (denoting itself). The consequences are
undefined if a symbol is used as a function designator but it does
not have a global definition as a function, or it has a global
definition as a macro or a special form. See also extended function
designator.
therefore:
(defun function-designator-p (object)
(or (symbolp object)
(functionp object)))
(function-designator-p '(lambda () 1))
--> NIL
So, the answer is no.
--
__Pascal Bourguignon__
http://www.informatimago.com/
More information about the armedbear-devel
mailing list