Common Lisp中我可以不被暗示任何語法錯誤評估的代碼(在SBCL)下面的代碼片段:當我嘗試評估的相應方案片斷 (let ((x 0))
(defun my-incf (y)
(setf x (+ x y)))
(defun my-decf (y)
(setf x (- x y))))
MY-DECF
CL-USER> (my-incf 1)
我有下面的代碼是需要一個封閉的: var numItems = document.getElementsByClassName('l').length;
for (var i = 0; i < numItems; i++) {
document.getElementsByClassName('l')[i].onclick = function (e){
preview(thi