Land of Lisp

What You've Learned

In this chapter, we created a custom REPL to supercharge our text adventure game. Along the way, you learned the following:

• The print and read functions let you directly communicate with the user through the console. These two functions work in a computer-friendly way.

• Other input/output functions are not as elegant as read and print, but are friendlier for interacting with humans. Examples include princ and read-line.

• A homoiconic programming language stores its program code and program data in a similar format. Lisp’s quoting, quasiquoting, eval, and macro features make it extremely homoiconic.

• It’s easy to write your own custom REPL.

• It’s simple to transform your internal Lisp data into the format most suitable for your program’s ...