Recipe datastructure (2)

Lecture overview -- Keyboard shortcut: 'u'

Previous page: Recipe datastructure (1) -- Keyboard shortcut: 'p'

Next page: A Recipe XML language -- Keyboard shortcut: 'n'

Lecture notes - all slides and notes together

Annotated slide -- Keyboard shortcut: 't'

Slide 19 : 30

Recipe datastructure (2)

Representing recipes as lists in Scheme

(define (present-recipe r)
  (div 'class "recipe"
    (h3 (title-of-recipe r))
    (b "Ingredients")
    (ul      
      (map 
        (compose li present-ingredient) 
        (ingredient-list-of-recipe r)))
    (b "Procedure:")
    (ol(map li (steps-of-recipe r)))))

Entire document.

HTML recipe document

A raw list approach - Easy to make errors in list structure - misspelling and structural errors