Go Lang Route to Split and Shuffle Array of Objects

golang-split-shuffle.go

m.Get("/cards/:players", allowCORSHandler, func(args martini.Params, r render.Render) {
  	
  Shuffle(cards)
  	
  //use Atoi as ParseInt always does int64
  p, _ := strconv.Atoi(args["players"])

  if(p==0 || p>52){
    //not valid number
    r.JSON(200, cards)
  } else {

    var total = len(cards)
    var start = 0
    var split = total/p

    //for sorting by suit and number
    suit := func(c1, c2 *Card) bool {
	return c1.Suit < c2.Suit
    }
    numbers := func(c1, c2 *Card) bool {
	return c1.Number < c2.Number
    }

    //make a multidiemnsional array in Go (http://rosettacode.org/wiki/Create_a_two-dimensional_array_at_runtime#Go) with as many items in array as players so we can loop and fill below
    var a = make([][]Card,p)

    for i := range a {
      var psplit = cards[start:start+split];

      // Sort by Number and Suit
      OrderedBy(suit, numbers).Sort(psplit)

      a[i]=psplit
      start=start+split

    }

    //kitty
    var kittycards = cards[start:total]
    r.JSON(200, map[string]interface{}{"players": a, "kitty":kittycards})

}

Look at the full code here: https://github.com/techslides/gae-go-cards-api/blob/master/hello.go