What are the pros ans cons of using a macrolet or a #. in a function when
the macrolet or #. is used only once and the code is small.
Example:
(defconstant +slot-initargs+ '(:user-name :description :tooltip :stored
:indexed :null-allowed))
(defmethod clos::compute-effective-slot-definition-initargs ((class
fc-class) name direct-slot-definitions)
(macrolet ((copy-slots (initargs)
(loop for initarg in initargs
nconc `(,initarg (,(intern (symbol-name initarg)) direct-slot)))))
(let ((direct-slot (first direct-slot-definitions)))
(append (copy-slots #.+slot-initargs+)(call-next-method)))))
vs:
(defmethod clos::compute-effective-slot-definition-initargs ((class
fc-class) name direct-slot-definitions)
(let ((direct-slot (first direct-slot-definitions)))
(append #.(loop for initarg in +slot-initargs+
nconc `(,initarg (,(intern (symbol-name initarg)) direct-slot)))
(call-next-method))))
Marc Battyani
In article <··················································@lp.airnews.net>,
Marc Battyani <·············@csi.com> wrote:
>What are the pros ans cons of using a macrolet or a #. in a function when
>the macrolet or #. is used only once and the code is small.
IMHO, #. should only be used when it is absolutely necessary, when you're
in a context that requires a constant, you need to compute it, and it can
be computed at read time.
--
Barry Margolin, ······@bbnplanet.com
GTE Internetworking, Powered by BBN, Burlington, MA
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