buntine

 //Selecting Item Colours
 $(".dress-container .select-colour a").click(function(){
   //find the colour range
   var colourRange = $(this).parent().next(".colours");
   //find the links in the colour range
   var colourRangeLink = $(colourRange).find("a");
   
   //showing colour range
   $(colourRange).show();
   

buntine

(lambda (n) (+ n 1))

buntine

; letfn is a Clojure macro that allows for mutually recursive functions.
; In some lisps, letfn (or letrec) will expand to a lambda expression.
(letfn [(fact-helper [total n]
          (if (<= n 1)
            total
            (fact-helper (* n total) (- n 1))))]
  (defn fact [n]
    (fact-helper 1 n)))

(fact 5)           ; 120

buntine

; This function returns a closure. That is, the returned anonymous function
; saves a reference to the free variable "n".
(defn make-adder [n]
  "Returns a function that sums a given value (m) with n."
  (fn [m]
    (+ n m)))

(def add-10 (make-adder 10))

; When we invoke the function, rather than creating a new environment, it will

buntine

;;; Calculates all elements of Pascal's Triangle up to a particular width/row.

(define (pascal width)
  (reverse (pascal-helper '((1)) width)))

(define (pascal-helper rows width)
  (if (= (length rows) width)
    rows
    (pascal-helper (cons (next-row (car rows))
                         rows)