Going Further. Three Voderberg tile spirals, warped in euclidean space.
The preceding chapter prepared you to write Scheme programs using a small set of the most useful primitive syntactic forms and procedures. This chapter introduces a number of additional features and programming techniques that will allow you to write more sophisticated and efficient programs. Section 3.1. Syntactic Extension As we saw in Section 2.5, the let syntactic form is merely a syntactic extension defined in terms of a lambda expression and a procedure application, both core syntactic forms. Structure and Interpretation of Computer Programs. Farmageddon. Programming Languages: Application and Interpretation by Shriram Krishnamurthi.