Land of Lisp

Defining Local Variables in Lisp

For our simple game, we’ve defined global variables and functions. However, in most cases you’ll want to limit your definitions to a single function or a block of code. These are called local variables and functions.

To define a local variable, use the command let. A let command has the following structure:

 (let (variable declarations)
   ...body...)

The first thing inside the let command is a list of variable declarations . This is where we can declare one or more local variables. Then, in the body of the command (and ...