Land of Lisp

What You've Learned

In this chapter, we discussed the basic Common Lisp commands for defining variables and functions. Along the way, you learned the following:

• To define a global variable, use the defparameter command.

• To define a global function, use the defun command.

• Use the let and flet commands to define local variables and functions, respectively.

• The function labels is like flet, but it lets functions call themselves. Functions that call themselves are called recursive functions.