hift', 'sort', 'splice', 'unshift'], (name) ->
  method = Array.prototype[name]
  wrapper.prototype[name] = ->
    method.apply(this._wrapped, arguments)
    result(this._wrapped, this._chain)


# Add all accessor Array functions to the wrapper.
_.each ['concat', 'join', 'slice'], (name) ->
  method = Array.prototype[name]
  wrapper.prototype[name] = ->
    result(method.apply(this._wrapped, arguments), this._chain)


# Start chaining a wrapped Underscore object.
wrapper::chain = ->
  this._chain = true
  t