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语法 | |
array-rank array => rank | |
参数和值 | |
array --- 一个 array | |
rank --- 一个正整数 | |
描述 | |
返回 array 的维度 |
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语法 | |
array-in-bounds-p array &rest subscripts => generalized-boolean | |
参数和值 | |
array --- 一个 array | |
subscripts --- 一个 整数列表, 这个列表的长度和array 的rank 一样 | |
generalized-boolean --- 一个 generalized-boolean | |
描述 | |
如果 subscripts 在 array 的范围内, 返回 true, 否则返回 false |
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语法 | |
array-element-type array => typespec | |
参数和值 | |
array --- 一个 array | |
typespec --- 一个 type specifier | |
描述 | |
返回 array 中元素的类型 |
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语法 | |
array-dimensions array => dimensions | |
参数和值 | |
array --- 一个 array | |
dimensions --- 一个整数的列表 | |
描述 | |
返回数组的维度 |
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语法 | |
array-dimension array axis-number => dimension | |
参数和值 | |
array --- 一个 array | |
axis-number --- 一个 number, 小于数组的维度 | |
dimension --- 一个正数 | |
描述 | |
返回数组中 axis-number 该维的大小 |
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语法 | |
arrayp object => generalized-boolean | |
参数和值 | |
object --- 一个 object | |
generalized-boolean --- 一个 generalized-boolean | |
描述 | |
如果 object 是一个 array, 则返回 true, 否则返回 false |
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描述 | |
vector --- 一维的 array | |
list --- 一个 conses 的链, 用 car 和cdr 可操作 | |
array --- 数组 | |
sequence --- 序列, 包含 list 和 array |
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语法 | |
stringp object => generalized-boolean | |
参数和值 | |
object --- 一个 object | |
generalized-boolean --- 一个 generalized-boolean | |
描述 | |
如果 object 是 string 类型, 返回 true, 否则返回 false |
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语法 | |
string-trim character-bag string => trimmed-string | |
string-left-trim character-bag string => trimmed-string | |
string-right-trim character-bag string => trimmed-string | |
参数和值 | |
character-bag --- 一个 character 的 sequence | |
string --- 一个 string 指示符 | |
trimmed-string --- 一个 string | |
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语法 | |
string x => string | |
参数和值 | |
x --- 一个 string, 或者 symbol 或者 character | |
string --- 一个 string | |
描述 | |
如果 x 是一个 string, 则返回其自身 | |
如果 x 是一个 symbol, 则返回他的名字 |