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1-rambo committed May 30, 2024
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Expand Up @@ -87,6 +87,7 @@ Mini-Lisp 中,每一种数据类型都有其**外部表示**。外部表示这
列表是一种特殊的数据类型,它是对子类型和空表类型的组合,一个列表具有如下结构:
- 空表;或
- 对子,其中左半部分是任意数据,右半部分是列表

而不是列表的对子被称为带点列表,例如上述分析中,`(a . (b . (c . (d . ()))))` 是一个列表,而 `(a . (b . (c . d)))` 是一个带点列表,也就不是列表。厘清这一概念将有利于你完成后续任务。

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