The Environment

• The environment is a map from variables to values. All computation is performed with respect to an environment.

  • Example:
    (let* ((x 2) (y "hello")
    (f #'(lambda (z) x)))
    (funcall f (+ x (length y))))
    
    Evaluate
    (funcall f (+ x (length y)))
    in the environment

x: 2y: "hello"f: #'(lambda (z) x)

an anonymous function

Previous slide

Next slide

Back to first slide

View graphic version