Maps over an action list's actions with given variables bound to the executing action and its data.
with-action-list-mapping action-list item-var data-var &optional post-process &body body )
The
with-action-list-mapping
macro maps over an action-list's action-items. During execution, the symbols specified for
item-var
and
data-var
are bound to the executing action-item and its data respectively. See execute-actions for more on post-processing.
If this function is invoked with the keyword argument
:post-process :collect
, a list the values returned by each action-item's setf operation are returned.
(defun my-execution-function
(the-action-list other-args
&key (post-process nil)
&allow-other-keys)
(declare (ignore other-args))
(with-action-list-mapping (the-action-list
an-action-item
action-item-data
post-process)
(do-something-interesting-first)
(setf (symbol-value (car action-item-data))
(apply (cadr action-item-data)
(cddr action-item-data)))))
LispWorks User Guide and Reference Manual - 21 Dec 2011