Created
November 30, 2016 09:00
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common lisp 的函数 HASH-TABLE-COUNT
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| 语法 | |
| hash-table-count hash-table => count | |
| 参数和值 | |
| hash-table --- 一个 hash table | |
| count --- 一个正整数 | |
| 描述 | |
| 返回 hash-table 的大小, 如果hash-table 刚刚被创建, 那 count 为0 | |
| 代码 | |
| * (setq table (make-hash-table)) | |
| #<HASH-TABLE :TEST EQL :COUNT 0 {1004A9A1B3}> | |
| * (hash-table-count table) | |
| 0 | |
| * (setf (gethash 57 table) "fifty-seven") | |
| "fifty-seven" | |
| * (hash-table-count table) | |
| 1 |
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