define revisited

recall two versions of define

• for simple values
  (define i 3)
  
• for procedures
  (define (square i) (* i i))
  

now that we’ve seen lambda

• only the first form is significant
• the second form is syntactic sugar
  (define (square i) (* i i))
  
  stands for
  (define square (lambda (i) (* i i))

Previous slide

Next slide

Back to first slide

View graphic version