set interface

sets/hashset/hashset.go

@@ -24,9 +24,14 @@ package hashset
 
 import (
 	"fmt"
+	"github.com/emirpasic/gods/sets"
 	"strings"
 )
 
+func assertInterfaceImplementation() {
+	var _ sets.Interface = (*Set)(nil)
+}
+
 type Set struct {
 	items map[interface{}]struct{}
 }

sets/sets.go

@@ -0,0 +1,29 @@
+/*
+Copyright (c) Emir Pasic, All rights reserved.
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 3.0 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library. See the file LICENSE included
+with this distribution for more information.
+*/
+
+package sets
+
+type Interface interface {
+	Add(items ...interface{})
+	Remove(items ...interface{})
+	Contains(items ...interface{}) bool
+	Empty() bool
+	Size() int
+	Clear()
+	Values() []interface{}
+}