From be4696ebb9f7d6621a78829bc956422f4f4c12e5 Mon Sep 17 00:00:00 2001
From: Matthew Jaffee <jaffee@pilosa.com>
Date: Wed, 20 Dec 2017 09:02:03 -0600
Subject: [PATCH] remove interface

---
 roaring/containers.go | 2 +-
 roaring/roaring.go    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/roaring/containers.go b/roaring/containers.go
index c80dbeb06..faa531dd9 100644
--- a/roaring/containers.go
+++ b/roaring/containers.go
@@ -37,7 +37,7 @@ func (slc *SkipListContainers) GetOrCreate(key uint64) *container {
 	return el.Value().(*container)
 }
 
-func (slc *SkipListContainers) Clone() Containers {
+func (slc *SkipListContainers) Clone() *SkipListContainers {
 	nslc := NewSkipListContainers()
 	for c := slc.list.Front(); c != nil; c = c.Next() {
 		nslc.list.Set(c.Key(), c.Value().(*container).clone())
diff --git a/roaring/roaring.go b/roaring/roaring.go
index 2de14caf3..62e4b7935 100644
--- a/roaring/roaring.go
+++ b/roaring/roaring.go
@@ -98,7 +98,7 @@ type Contiterator interface {
 
 // Bitmap represents a roaring bitmap.
 type Bitmap struct {
-	conts Containers
+	conts *SkipListContainers
 
 	// Number of operations written to the writer.
 	opN int