marcosccm

Immortal Ruby

• Desired talk duration: 30 minutes

Abstract

Should rubyists care about immutability? Yes! On this talk we discuss why immutability is an important concept and the many ways you can apply it to your Ruby Projects, from using specific gems to having immutability as a design tool. Let's not let the functional languages steal all the fun!

marcosccm

10.times.collect { ["clj", "blog", "pacto"].sample }.group_by { |x| x }.map { |k,v| [k,v.size] }.max_by { |x| x.last }

10.times.collect { ["clj", "blog", "pacto"].sample }.inject(Hash.new(0)) { |acc, elem| acc[elem] += 1; acc }.max_by { |k,v| v }

marcosccm

require 'webrick'
json = File.read("./file.json")
class Server < WEBrick::HTTPServlet::AbstractServlet
  def initialize(server, json)
    super(server)
    @json = json
  end

  def do_GET(request, response)
    response.status = 200

marcosccm

//FightCode can only understand your robot
//if its class is called Robot
var Robot = function(robot) {
	var lockLevel = 0;
};

Robot.prototype.onIdle = function(ev) {
  var robot = ev.robot;
  if(this.lockLevel > 0){

marcosccm

var Robot = function(robot) {
//  var robot = ev.robot;
}
     
Robot.prototype.onIdle = function(ev) {
  var robot = ev.robot; 
  	robot.clone();
     robot.rotateCannon(360); 
  	robot.turn(360)

marcosccm

var robots	= new Array();



//FightCode can only understand your robot
//if its class is called Robot
var Robot = function(robot) {
};

Robot.prototype.start			= function( ev ){

marcosccm

import Data.List     
import Data.Function

wcc = maximumBy (compare `on` sum) . filter (not . null) . concatMap inits . tails

marcosccm

import Data.List
import Data.Function

wcc :: (Ord a, Num a) => a -> [a] -> [[a]] 
wcc x = maximumBy (greaterSum) . groupBy (sameSum) . filter (sumSmallerThenTarget) . subsequences . filter (< x) . sort
    where sumSmallerThenTarget xs = (sum xs) < x
          sameSum a b             = sum a == sum b
          greaterSum              = compare `on` (sum . concat)