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當我試圖編譯的文件http://restas.lisper.ru/en/manual/special-pages.html在這裏顯示的渲染對象的方法,什麼是restas渲染對象?
(defmethod restas:render-object ((designer mydrawer)
(code (eql hunchentoot:+http-internal-server-error+)))
(setf (hunchentoot:content-type*) "text/plain")
"Oh, all very bad")
它給
There is no class named RESTAURANT::MYDRAWER SIMPLE-ERROR
如何將這些渲染對象一樣的東西工作?
爲了更好地理解它,你應該閱讀關於泛型函數:http://www.gigamonkeys.com/book/object-reorientation-generic-functions.html 在你的情況,你沒有類'mydrawer '在當前包中定義 –