diff --git a/containers/containers.go b/containers/containers.go
index c35ab36d..a512a3cb 100644
--- a/containers/containers.go
+++ b/containers/containers.go
@@ -21,10 +21,11 @@ type Container interface {
 	Size() int
 	Clear()
 	Values() []interface{}
+	String() string
 }
 
 // GetSortedValues returns sorted container's elements with respect to the passed comparator.
-// Does not effect the ordering of elements within the container.
+// Does not affect the ordering of elements within the container.
 func GetSortedValues(container Container, comparator utils.Comparator) []interface{} {
 	values := container.Values()
 	if len(values) < 2 {
diff --git a/containers/containers_test.go b/containers/containers_test.go
index 94cf4f80..60e0332e 100644
--- a/containers/containers_test.go
+++ b/containers/containers_test.go
@@ -7,7 +7,9 @@
 package containers
 
 import (
+	"fmt"
 	"github.com/emirpasic/gods/utils"
+	"strings"
 	"testing"
 )
 
@@ -32,6 +34,16 @@ func (container ContainerTest) Values() []interface{} {
 	return container.values
 }
 
+func (container ContainerTest) String() string {
+	str := "ContainerTest\n"
+	var values []string
+	for _, value := range container.values {
+		values = append(values, fmt.Sprintf("%v", value))
+	}
+	str += strings.Join(values, ", ")
+	return str
+}
+
 func TestGetSortedValuesInts(t *testing.T) {
 	container := ContainerTest{}
 	container.values = []interface{}{5, 1, 3, 2, 4}
diff --git a/utils/utils.go b/utils/utils.go
index d305a7c8..262c6257 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -26,7 +26,7 @@ func ToString(value interface{}) string {
 	case int32:
 		return strconv.FormatInt(int64(value), 10)
 	case int64:
-		return strconv.FormatInt(int64(value), 10)
+		return strconv.FormatInt(value, 10)
 	case uint8:
 		return strconv.FormatUint(uint64(value), 10)
 	case uint16:
@@ -34,11 +34,11 @@ func ToString(value interface{}) string {
 	case uint32:
 		return strconv.FormatUint(uint64(value), 10)
 	case uint64:
-		return strconv.FormatUint(uint64(value), 10)
+		return strconv.FormatUint(value, 10)
 	case float32:
 		return strconv.FormatFloat(float64(value), 'g', -1, 64)
 	case float64:
-		return strconv.FormatFloat(float64(value), 'g', -1, 64)
+		return strconv.FormatFloat(value, 'g', -1, 64)
 	case bool:
 		return strconv.FormatBool(value)
 	default: