3.4 Lambda Lists 3.4.4 Macro Lambda Lists 220.127.116.11 Destructuring by Lambda Lists 18.104.22.168.1 Data-directed Destructuring by Lambda Lists
22.214.171.124.1.1 Examples of Data-directed Destructuring by Lambda ListsAn 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.