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| 3.4 Lambda Lists 3.4.4 Macro Lambda Lists 3.4.4.1 Destructuring by Lambda Lists 3.4.4.1.1 Data-directed Destructuring by Lambda Lists ### 3.4.4.1.1.1 Examples of Data-directed Destructuring by Lambda Lists An example pattern is `(a b c)` which destructures a list of three elements. The variable `a` is assigned to the first element, `b` to the second, etc. A more complex example is `((first . rest) . more)` The important features of data-directed destructuring are its syntactic simplicity and the ability to extend it to lambda-list-directed destructuring.

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