# 9 符号(3/4)

符号 (symbol) 是一类具有独一无二名称的对象。本章将会介绍符号的组成、属性列表、以及符号的创建与注册 (interned)。此外还有几个章节详细介绍了如何将符号作为变量名和函数名使用。有关符号的读取语法，请参照2.4.4节。

你可以使用谓词 symbolp 来测试一个 Lisp对象 是否为 符号。

Function: symbolp object\
  测试object是否为符号类型，当 object 是符号时返回 t， 否则返回 nil。


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