nil pointer
常见例句
- Normal control characters (characters with values less than 32): This especially includes character 0, traditionally called NUL; I call it NIL to distinguish it from C's NULL pointer.
常槼控制字符(字符值小於32):還特別包括字符0,傳統上稱做 NUL;我把它稱爲 NIL 以區別於 C 語言中的 NULL 指針。 返回 nil pointer