var $break    = new Object();var $continue = new Object();var Enumerable = {  each: function(iterator) {    var index = 0;    try {      this._each(function(value) {        try {          iterator(value, index++);        } catch (e) {          if (e != $continue) throw e;        }      });    } catch (e) {      if (e != $break) throw e;    }  },    all: function(iterator) {    var result = true;    this.each(function(value, index) {      result = result && !!(iterator || Prototype.K)(value, index);      if (!result) throw $break;    });    return result;  },    any: function(iterator) {    var result = true;    this.each(function(value, index) {      if (result = !!(iterator || Prototype.K)(value, index))         throw $break;    });    return result;  },    collect: function(iterator) {    var results = [];    this.each(function(value, index) {      results.push(iterator(value, index));    });    return results;  },    detect: function (iterator) {    var result;    this.each(function(value, index) {      if (iterator(value, index)) {        result = value;        throw $break;      }    });    return result;  },    findAll: function(iterator) {    var results = [];    this.each(function(value, index) {      if (iterator(value, index))        results.push(value);    });    return results;  },    grep: function(pattern, iterator) {    var results = [];    this.each(function(value, index) {      var stringValue = value.toString();      if (stringValue.match(pattern))        results.push((iterator || Prototype.K)(value, index));    })    return results;  },    include: function(object) {    var found = false;    this.each(function(value) {      if (value == object) {        found = true;        throw $break;      }    });    return found;  },    inject: function(memo, iterator) {    this.each(function(value, index) {      memo = iterator(memo, value, index);    });    return memo;  },    invoke: function(method) {    var args = $A(arguments).slice(1);    return this.collect(function(value) {      return value[method].apply(value, args);    });  },    max: function(iterator) {    var result;    this.each(function(value, index) {      value = (iterator || Prototype.K)(value, index);      if (value >= (result || value))        result = value;    });    return result;  },    min: function(iterator) {    var result;    this.each(function(value, index) {      value = (iterator || Prototype.K)(value, index);      if (value <= (result || value))        result = value;    });    return result;  },    partition: function(iterator) {    var trues = [], falses = [];    this.each(function(value, index) {      ((iterator || Prototype.K)(value, index) ?         trues : falses).push(value);    });    return [trues, falses];  },    pluck: function(property) {    var results = [];    this.each(function(value, index) {      results.push(value[property]);    });    return results;  },    reject: function(iterator) {    var results = [];    this.each(function(value, index) {      if (!iterator(value, index))        results.push(value);    });    return results;  },    sortBy: function(iterator) {    return this.collect(function(value, index) {      return {value: value, criteria: iterator(value, index)};    }).sort(function(left, right) {      var a = left.criteria, b = right.criteria;      return a < b ? -1 : a > b ? 1 : 0;    }).pluck('value');  },    toArray: function() {    return this.collect(Prototype.K);  },    zip: function() {    var iterator = Prototype.K, args = $A(arguments);    if (typeof args.last() == 'function')      iterator = args.pop();    var collections = [this].concat(args).map($A);    return this.map(function(value, index) {      iterator(value = collections.pluck(index));      return value;    });  },    inspect: function() {    return '#<Enumerable:' + this.toArray().inspect() + '>';  }}Object.extend(Enumerable, {  map:     Enumerable.collect,  find:    Enumerable.detect,  select:  Enumerable.findAll,  member:  Enumerable.include,  entries: Enumerable.toArray});