DavidQL

class User
  def foo_cache_key
    "user-#{self.id}-memcache-iterator-#{self.memcache_iterator}-foo"
  end
end

DavidQL

class User
  def increment_memcache_iterator
    Rails.cache.write("user-#{self.id}-memcache-iterator", self.memcache_iterator + 1)
  end

  def memcache_iterator
    # fetch the user's memcache key
    # If there isn't one yet, assign it a random integer between 0 and 10
    Rails.cache.fetch("user-#{self.id}-memcache-iterator") { rand(10) }
  end

DavidQL

david.languages; // undefined

DavidQL

Person.prototype.walk = function() {
  console.log(this.name + ' walked.');
};

david.walk(); // 'David walked'

DavidQL

david.languages; // undefined

DavidQL

Person.languages = ["English", "Body"];

DavidQL

var david = new Person("David", 23);

DavidQL

var Person = function(name, age) {
  this.name = name;
  this.age = age;
};

DavidQL

# Works
@request.cookies[:auth_token] = user.auth_token

DavidQL

# Doesn't work
cookies[:auth_token] = user.auth_token