/* * Copyright (c) 2011-13 Miles Sabin * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package shapeless package syntax package std import scala.collection.GenTraversable /** * Conversions between `Traversables` and `HLists`. * * The implicit defined by this object enhances `Traversables` with a `toHList` method which constructs an equivalently * typed [[shapeless.HList]] if possible. * * @author Miles Sabin */ object traversable { implicit def traversableOps[T <% GenTraversable[_]](t : T) = new TraversableOps(t) } final class TraversableOps[T <% GenTraversable[_]](t : T) { import ops.traversable._ def toHList[L <: HList](implicit fl : FromTraversable[L]) : Option[L] = fl(t) }