Extensions for Vector and Array in ActionScript 3

_example.as

var bob:Person = new Person(name: "bob");
var john:Person = new Person(name: "john");
var alice:Person = new Person(name: "alice");

var vectorPersons:Vector<Person> = new Vector.<Person>[bob, john, alice];
VectorUtil.of(vectorPersons).getOneBy({ name: "bob" });
//=> #<Person name: "bob">

var arrayPersons:Array = [bob, john, alice];
arrayPersons.findBy({ name: "bob" });
//=> [#<Person name: "bob">]

ArrayExtensions.as

Array.prototype.findBy = function(attributes:Object):Array {
  return VectorUtil.of(this).findBy(attributes);
};
Array.prototype.setPropertyIsEnumerable("findBy", false);

Array.prototype.getOneBy = function(attributes:Object):Array {
  return VectorUtil.of(this).getOneBy(attributes);
};
Array.prototype.setPropertyIsEnumerable("getOneBy", false);

VectorUtil.as

public class VectorUtil {
  private var _vector:*;

  public static function of(vector:*):VectorUtil {
    var vectorUtil:VectorUtil = new VectorUtil;
    vectorUtil._vector = vector;
    return vectorUtil;
  }

  public function findBy(attributes:Object):* {
    return _vector.filter(function(element:Object, _index:int, _source:*):Boolean {
      for (var key:String in attributes) {
        var value:* = attributes[key];
        if (element[key] != value) {
          return false;
        }
      }
      return true;
    });
  }

  public function getOneBy(attributes:Object):Object {
    for each (var element:Object in _vector) {
      var found:Boolean = true;

      for (var key:String in attributes) {
        var value:* = attributes[key];
        if (element[key] != value) {
          found = false;
          break;
        }
      }

      if (found) {
        return element;
      }
    }
    return null;
  }
}