domwom

public function collect($function)
{
    $result = array();
    foreach ($this as $key => $value) {
        array_push($result,call_user_func(array($value,$function),$value));
    }
    return $result;
}

domwom

[color]
        diff = auto
        status = auto
        branch = auto
        interactive = auto
        ui = true
        pager = true

[color "branch"]
        current = yellow reverse

domwom

class User < ActiveRecord::Base
  has_many :friends, :through => :friendships
  has_many :friendships, :dependent => :destroy
 
  def getMutualFriendsWith user
    intersection = friends() & user.friends()
  end
  
  def getNumberOfMutualFriendsWith user
    getMutualFriendsWith(user).length()