animatedlew

object Loops extends App {
  
	print("for (i <- 1 to 10)\n\t")
	
	// for/Range using to
	for (i <- 1 to 10) {
	  print("#" + i)
	}
	
	print("\nfor (i <- 1 until 10)\n\t")

animatedlew

  def sqrt(x: Double): Double = {
    def isGoodEnough(guess: Double): Boolean =
      abs(square(guess) - x) / x < 0.001

    def improve(guess: Double): Double =
      (guess + x / guess) / 2

    def sqrtIter(guess: Double): Double =
      if (isGoodEnough(guess)) guess
      else sqrtIter(improve(guess))

animatedlew

  // If the second parameter isn't set to eval as CBN
  // then infinite loops will hang before the method even begins
  def and(x: Boolean, y: => Boolean) =
    if (x) y else false                           
    
  and(true, false)                                
  and(false, true)                                
  and(false, false)                               
  and(true, true)                                 

animatedlew

_.chain([[1, 2, 3], [4, 5, 6], [7, 8, 9]])
  // Grab each sublist and...
  .map(function(sublist) {
    // Sum each of its elements up!
    return _.reduce(sublist, function(total, num) {
      return total += num;
    });
  }).value();

animatedlew

function unflatten(list, group) {  
  var result = [];
  for (var j = 0; j < Math.ceil(list.length/group); j++) {
    for (var i = 0, sublist = [], cache = list[i+(j*group)]; i < group; i++) {
      cache ? sublist.push(cache) : sublist;
    }
    result.push(sublist);
  }
  return result;
}

animatedlew

var selectAll = function() {
  views.filter(function(view) {
      if (view.$el.hasClass("active") !== toggle) {
          return true;
      }
  }).map(function(view) {
      return view.$el;
  }).forEach(function($el) {
      $el.toggleClass("active", toggle)
        .find("input:checkbox")

animatedlew

function unflatten(list, count) {
    return _.map(_.range(Math.ceil(list.length/count)), function(mul) {
        return list.slice(mul*count, mul*count+count); 
    });
}
 
console.log(unflatten(_.range(1, 14), 3));
// [[1, 2, 3], [4, 5, 6], [7, 8, 9], [10, 11, 12], [13]]

animatedlew

def loop(num):
  print("num: ", num)
  if (num > 0):
    loop(num - 1)
loop (10)

animatedlew

var data = {
    first: ["Alvaro", "Lewis", "Craig"],
    last: ["Carrasco", "Moronta", "Pottinger"]
  }, result = [];

var combineNames = function() {
  return _.zip(_.values(data)[0], _.values(data)[1]);
};

var assignKeys = function(name) {

animatedlew

object Main extends App {
  
  // Find any place in the triangle using n choose k
  def pascal2(r: Int, c: Int): Int = {
    def factorial(n: Int): Int =
      if (n < 1) 1 else n * factorial(n - 1)
    factorial(r) / (factorial(c) * factorial(r - c))
  }

  def pascal(r: Int, c: Int): Int = {