(not (null nil))

Results 21 issues of (not (null nil))

I think it would probably be helpful to open a new chapter which collects common error & problems for new lispers. What do you say? I think it may save...

when visit / (using with weblocks), you will see the following error from your repl: ``` There was an error processing your request: The value NIL is not of type...

At page 11, [this documentation](https://common-lisp.net/project/mcclim/static/documents/guided-tour.pdf), it seems that `(defun make-color-slider (id initval label)` is missing before `(labelling (:label label)`.

I'm trying to make X Input Method work with McCLIM, so that we can use Input Method like fcitx to input Chinese, Japanese, and Korean, etc. For now I have...

question

I'm trying to make X Input Method work with McCLIM, so that we can use Input Method like fcitx to input Chinese, Japanese, and Korean, etc. For now I have...

question

`(all-the-icons-icon-family-for-buffer)` gives `(void-function nil-family)` ``` Debugger entered--Lisp error: (void-function nil-family) nil-family() #f(compiled-function (file) "Get the icons font family for FILE." #)("init-units.el") apply(#f(compiled-function (file) "Get the icons font family for FILE."...

如图:![image](https://user-images.githubusercontent.com/23580174/89747961-9e8a6700-daf3-11ea-8bbb-150fc3d6d646.png) 画板链接:https://huaban.com/boards/17900490/ 似乎自己变成锁的采集只需要登录就能解锁

I wrote something like this ``` (define-widget main-window (QWidget) ()) (define-subwidget (main-window writing-desk) (q+:make-qtextedit main-window)) (defun start () (with-main-window (window 'main-window))) ``` then in the text edit I got, I...

Sample ``` (deftable file () ((file-name :col-type (:varchar 260) :initarg :file-name :accessor file-name))) (deftable foo () ((file-dao :col-type file :initarg :file-dao :accessor file-dao))) (deftable foo-1 (foo) ()) (mapc #'ensure-table-exists (list...

In OpenRestry, a dynamic web platform based on NGINX and LuaJIT, there are something different from origin NGINX. [example](https://github.com/openresty/lua-resty-upload#synopsis) Hoping you could add support for it.