针对Scheme中的列表列表运行查询 [英] Running queries against a list of lists in Scheme

问题描述

我被困在项目的中间.我有一个列表列表，例如:

I'm stuck in the middle of my project. I have a list of lists like:

'((a for apple) (b is book) (c in cat) (ronn live in NY))

现在，我想以列表的形式进行查询，并使其在我的列表中显示正确的条目.例如，如果我输入'(a for what)或'(what in cat)，它将显示(a for apple)或(c in cat).如果输入'(ronn live in where)，它将显示(ronn live in NY).

Now I want to make a query in the form of a list and have it display the correct entry in my list of lists. For example, if I input '(a for what) or '(what in cat) it will display (a for apple) or (c in cat). If I input '(ronn live in where) it will show (ronn live in NY).

有人可以帮我解决这个问题吗?

Can anyone help me solve this problem?

推荐答案

第4a节，模式匹配和基于规则的替换

Lecture 4a, Pattern Matching and Rule-based Substitution

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