如
zerop // 判断参数是否为0的函数
listp // 判断参数是否是列表的函数
p 是 predicate 的缩写
predicate
['predɪkət]
vi. 断言
In the jargon used by the early Lisp researchers, a predicate refers to a function to determine whether
some property is true or false.
如
zerop // 判断参数是否为0的函数
listp // 判断参数是否是列表的函数
p 是 predicate 的缩写
predicate
['predɪkət]
vi. 断言
In the jargon used by the early Lisp researchers, a predicate refers to a function to determine whether
some property is true or false.