(in-package #:clsql-sys)
(defmacro defaulting (&rest place-value-plist)
+ "for places and values (as an &rest plist)
+ if place-n is null set it to value-n"
`(progn
,@(loop for (place value . rest) on place-value-plist by #'cddr
collect `(unless ,place (setf ,place ,value)))))
+(defmacro pop-n (place &optional (n 1))
+ "pops n items off of a list in place and returns their values in a new list
+
+ if n > the length of the list in place, then we return the full list,
+ setting the place to nil"
+ `(loop repeat ,n
+ while ,place
+ collect (pop ,place)))
+
(defun %get-int (v)
(etypecase v
(string (parse-integer v :junk-allowed t))
(symbol (find-class it))
(standard-object (class-of it))))
+(defun to-class-name (o)
+ (etypecase o
+ (symbol o)
+ (standard-class (class-name o))
+ (standard-object (class-name (class-of o)))))
+
(defun easy-slot-value (obj slot)
"like slot-value except it accepts slot-names or defs
and returns nil when the slot is unbound"
"like slot-value except it accepts slot-names or defs"
(setf (slot-value obj (to-slot-name slot)) new))
+(defun delist-if-single (x)
+ "if this is a single item in a list return it"
+ (if (and (listp x) (= 1 (length x)))
+ (first x)
+ x))