nil pointer

常見例句

雙語例句

• 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(tǒng)上稱做 NUL；我把它稱爲 NIL 以區(qū)別於 C 語言中的 NULL 指針。
返回 nil pointer