While a function is a splendid thing, it suffers from excessive tersenes...

9.1 Recursive and Cyclic Data Recursion in data can refer to one of two ...

8.1 这节的目标 解释一下以下语句 :D 为啥不用environment去记录box值得变化 The environment already ...

The introduction to the Scheme programming language definition establish...

There’s another difficulty with using substitution, which is the number ...

5.1 Defining Data Representations To keep things simple, let’s just cons...

1 Extension: Binary Subtraction it’s easy to define subtraction: a − b =...

Let’s write an evaluator, in the form of an interpreter, for our arithme...

Parsing is the act of turning an input character stream into a more stru...