diff --git a/lists/arraylist/arraylist.go b/lists/arraylist/arraylist.go
index bfedac9..41327bb 100644
--- a/lists/arraylist/arraylist.go
+++ b/lists/arraylist/arraylist.go
@@ -17,9 +17,8 @@ import (
 	"github.com/emirpasic/gods/utils"
 )
 
-func assertListImplementation() {
-	var _ lists.List = (*List)(nil)
-}
+// Assert List implementation
+var _ lists.List = (*List)(nil)
 
 // List holds the elements in a slice
 type List struct {
diff --git a/lists/arraylist/enumerable.go b/lists/arraylist/enumerable.go
index b3a8738..8bd60b0 100644
--- a/lists/arraylist/enumerable.go
+++ b/lists/arraylist/enumerable.go
@@ -6,9 +6,8 @@ package arraylist
 
 import "github.com/emirpasic/gods/containers"
 
-func assertEnumerableImplementation() {
-	var _ containers.EnumerableWithIndex = (*List)(nil)
-}
+// Assert Enumerable implementation
+var _ containers.EnumerableWithIndex = (*List)(nil)
 
 // Each calls the given function once for each element, passing that element's index and value.
 func (list *List) Each(f func(index int, value interface{})) {
diff --git a/lists/arraylist/iterator.go b/lists/arraylist/iterator.go
index 2fefbb6..f9efe20 100644
--- a/lists/arraylist/iterator.go
+++ b/lists/arraylist/iterator.go
@@ -6,9 +6,8 @@ package arraylist
 
 import "github.com/emirpasic/gods/containers"
 
-func assertIteratorImplementation() {
-	var _ containers.ReverseIteratorWithIndex = (*Iterator)(nil)
-}
+// Assert Iterator implementation
+var _ containers.ReverseIteratorWithIndex = (*Iterator)(nil)
 
 // Iterator holding the iterator's state
 type Iterator struct {
diff --git a/lists/arraylist/serialization.go b/lists/arraylist/serialization.go
index 402298f..5e86fe9 100644
--- a/lists/arraylist/serialization.go
+++ b/lists/arraylist/serialization.go
@@ -9,10 +9,9 @@ import (
 	"github.com/emirpasic/gods/containers"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*List)(nil)
-	var _ containers.JSONDeserializer = (*List)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*List)(nil)
+var _ containers.JSONDeserializer = (*List)(nil)
 
 // ToJSON outputs the JSON representation of list's elements.
 func (list *List) ToJSON() ([]byte, error) {
diff --git a/lists/doublylinkedlist/doublylinkedlist.go b/lists/doublylinkedlist/doublylinkedlist.go
index 9035e38..ab63de4 100644
--- a/lists/doublylinkedlist/doublylinkedlist.go
+++ b/lists/doublylinkedlist/doublylinkedlist.go
@@ -17,9 +17,8 @@ import (
 	"github.com/emirpasic/gods/utils"
 )
 
-func assertListImplementation() {
-	var _ lists.List = (*List)(nil)
-}
+// Assert List implementation
+var _ lists.List = (*List)(nil)
 
 // List holds the elements, where each element points to the next and previous element
 type List struct {
diff --git a/lists/doublylinkedlist/enumerable.go b/lists/doublylinkedlist/enumerable.go
index e6cf60f..4b14a47 100644
--- a/lists/doublylinkedlist/enumerable.go
+++ b/lists/doublylinkedlist/enumerable.go
@@ -6,9 +6,8 @@ package doublylinkedlist
 
 import "github.com/emirpasic/gods/containers"
 
-func assertEnumerableImplementation() {
-	var _ containers.EnumerableWithIndex = (*List)(nil)
-}
+// Assert Enumerable implementation
+var _ containers.EnumerableWithIndex = (*List)(nil)
 
 // Each calls the given function once for each element, passing that element's index and value.
 func (list *List) Each(f func(index int, value interface{})) {
diff --git a/lists/doublylinkedlist/iterator.go b/lists/doublylinkedlist/iterator.go
index 55fb0bc..27b34c2 100644
--- a/lists/doublylinkedlist/iterator.go
+++ b/lists/doublylinkedlist/iterator.go
@@ -6,9 +6,8 @@ package doublylinkedlist
 
 import "github.com/emirpasic/gods/containers"
 
-func assertIteratorImplementation() {
-	var _ containers.ReverseIteratorWithIndex = (*Iterator)(nil)
-}
+// Assert Iterator implementation
+var _ containers.ReverseIteratorWithIndex = (*Iterator)(nil)
 
 // Iterator holding the iterator's state
 type Iterator struct {
diff --git a/lists/doublylinkedlist/serialization.go b/lists/doublylinkedlist/serialization.go
index ce0fb01..f210f9a 100644
--- a/lists/doublylinkedlist/serialization.go
+++ b/lists/doublylinkedlist/serialization.go
@@ -9,10 +9,9 @@ import (
 	"github.com/emirpasic/gods/containers"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*List)(nil)
-	var _ containers.JSONDeserializer = (*List)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*List)(nil)
+var _ containers.JSONDeserializer = (*List)(nil)
 
 // ToJSON outputs the JSON representation of list's elements.
 func (list *List) ToJSON() ([]byte, error) {
diff --git a/lists/singlylinkedlist/enumerable.go b/lists/singlylinkedlist/enumerable.go
index 61ac289..6fdbcb8 100644
--- a/lists/singlylinkedlist/enumerable.go
+++ b/lists/singlylinkedlist/enumerable.go
@@ -6,9 +6,8 @@ package singlylinkedlist
 
 import "github.com/emirpasic/gods/containers"
 
-func assertEnumerableImplementation() {
-	var _ containers.EnumerableWithIndex = (*List)(nil)
-}
+// Assert Enumerable implementation
+var _ containers.EnumerableWithIndex = (*List)(nil)
 
 // Each calls the given function once for each element, passing that element's index and value.
 func (list *List) Each(f func(index int, value interface{})) {
diff --git a/lists/singlylinkedlist/iterator.go b/lists/singlylinkedlist/iterator.go
index 5f25ff1..4e7f177 100644
--- a/lists/singlylinkedlist/iterator.go
+++ b/lists/singlylinkedlist/iterator.go
@@ -6,9 +6,8 @@ package singlylinkedlist
 
 import "github.com/emirpasic/gods/containers"
 
-func assertIteratorImplementation() {
-	var _ containers.IteratorWithIndex = (*Iterator)(nil)
-}
+// Assert Iterator implementation
+var _ containers.IteratorWithIndex = (*Iterator)(nil)
 
 // Iterator holding the iterator's state
 type Iterator struct {
diff --git a/lists/singlylinkedlist/serialization.go b/lists/singlylinkedlist/serialization.go
index adcc575..588a316 100644
--- a/lists/singlylinkedlist/serialization.go
+++ b/lists/singlylinkedlist/serialization.go
@@ -9,10 +9,9 @@ import (
 	"github.com/emirpasic/gods/containers"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*List)(nil)
-	var _ containers.JSONDeserializer = (*List)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*List)(nil)
+var _ containers.JSONDeserializer = (*List)(nil)
 
 // ToJSON outputs the JSON representation of list's elements.
 func (list *List) ToJSON() ([]byte, error) {
diff --git a/lists/singlylinkedlist/singlylinkedlist.go b/lists/singlylinkedlist/singlylinkedlist.go
index b61df78..c3e2c67 100644
--- a/lists/singlylinkedlist/singlylinkedlist.go
+++ b/lists/singlylinkedlist/singlylinkedlist.go
@@ -17,9 +17,8 @@ import (
 	"github.com/emirpasic/gods/utils"
 )
 
-func assertListImplementation() {
-	var _ lists.List = (*List)(nil)
-}
+// Assert List implementation
+var _ lists.List = (*List)(nil)
 
 // List holds the elements, where each element points to the next element
 type List struct {
diff --git a/maps/hashbidimap/hashbidimap.go b/maps/hashbidimap/hashbidimap.go
index 32985ab..5a386ec 100644
--- a/maps/hashbidimap/hashbidimap.go
+++ b/maps/hashbidimap/hashbidimap.go
@@ -21,9 +21,8 @@ import (
 	"github.com/emirpasic/gods/maps/hashmap"
 )
 
-func assertMapImplementation() {
-	var _ maps.BidiMap = (*Map)(nil)
-}
+// Assert Map implementation
+var _ maps.BidiMap = (*Map)(nil)
 
 // Map holds the elements in two hashmaps.
 type Map struct {
diff --git a/maps/hashbidimap/serialization.go b/maps/hashbidimap/serialization.go
index dff7801..dfae043 100644
--- a/maps/hashbidimap/serialization.go
+++ b/maps/hashbidimap/serialization.go
@@ -9,10 +9,9 @@ import (
 	"github.com/emirpasic/gods/containers"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*Map)(nil)
-	var _ containers.JSONDeserializer = (*Map)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*Map)(nil)
+var _ containers.JSONDeserializer = (*Map)(nil)
 
 // ToJSON outputs the JSON representation of the map.
 func (m *Map) ToJSON() ([]byte, error) {
diff --git a/maps/hashmap/hashmap.go b/maps/hashmap/hashmap.go
index 3f42ffc..e945c39 100644
--- a/maps/hashmap/hashmap.go
+++ b/maps/hashmap/hashmap.go
@@ -16,9 +16,8 @@ import (
 	"github.com/emirpasic/gods/maps"
 )
 
-func assertMapImplementation() {
-	var _ maps.Map = (*Map)(nil)
-}
+// Assert Map implementation
+var _ maps.Map = (*Map)(nil)
 
 // Map holds the elements in go's native map
 type Map struct {
diff --git a/maps/hashmap/serialization.go b/maps/hashmap/serialization.go
index dc2e259..a86fd86 100644
--- a/maps/hashmap/serialization.go
+++ b/maps/hashmap/serialization.go
@@ -10,10 +10,9 @@ import (
 	"github.com/emirpasic/gods/utils"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*Map)(nil)
-	var _ containers.JSONDeserializer = (*Map)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*Map)(nil)
+var _ containers.JSONDeserializer = (*Map)(nil)
 
 // ToJSON outputs the JSON representation of the map.
 func (m *Map) ToJSON() ([]byte, error) {
diff --git a/maps/linkedhashmap/enumerable.go b/maps/linkedhashmap/enumerable.go
index 644b00f..eafcaa5 100644
--- a/maps/linkedhashmap/enumerable.go
+++ b/maps/linkedhashmap/enumerable.go
@@ -6,9 +6,8 @@ package linkedhashmap
 
 import "github.com/emirpasic/gods/containers"
 
-func assertEnumerableImplementation() {
-	var _ containers.EnumerableWithKey = (*Map)(nil)
-}
+// Assert Enumerable implementation
+var _ containers.EnumerableWithKey = (*Map)(nil)
 
 // Each calls the given function once for each element, passing that element's key and value.
 func (m *Map) Each(f func(key interface{}, value interface{})) {
diff --git a/maps/linkedhashmap/iterator.go b/maps/linkedhashmap/iterator.go
index 17f3bb3..4c14178 100644
--- a/maps/linkedhashmap/iterator.go
+++ b/maps/linkedhashmap/iterator.go
@@ -9,9 +9,8 @@ import (
 	"github.com/emirpasic/gods/lists/doublylinkedlist"
 )
 
-func assertIteratorImplementation() {
-	var _ containers.ReverseIteratorWithKey = (*Iterator)(nil)
-}
+// Assert Iterator implementation
+var _ containers.ReverseIteratorWithKey = (*Iterator)(nil)
 
 // Iterator holding the iterator's state
 type Iterator struct {
diff --git a/maps/linkedhashmap/linkedhashmap.go b/maps/linkedhashmap/linkedhashmap.go
index 45c4e35..d625b3d 100644
--- a/maps/linkedhashmap/linkedhashmap.go
+++ b/maps/linkedhashmap/linkedhashmap.go
@@ -18,9 +18,8 @@ import (
 	"strings"
 )
 
-func assertMapImplementation() {
-	var _ maps.Map = (*Map)(nil)
-}
+// Assert Map implementation
+var _ maps.Map = (*Map)(nil)
 
 // Map holds the elements in a regular hash table, and uses doubly-linked list to store key ordering.
 type Map struct {
diff --git a/maps/linkedhashmap/serialization.go b/maps/linkedhashmap/serialization.go
index 805421d..9265f1d 100644
--- a/maps/linkedhashmap/serialization.go
+++ b/maps/linkedhashmap/serialization.go
@@ -11,10 +11,9 @@ import (
 	"github.com/emirpasic/gods/utils"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*Map)(nil)
-	var _ containers.JSONDeserializer = (*Map)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*Map)(nil)
+var _ containers.JSONDeserializer = (*Map)(nil)
 
 // ToJSON outputs the JSON representation of map.
 func (m *Map) ToJSON() ([]byte, error) {
diff --git a/maps/treebidimap/enumerable.go b/maps/treebidimap/enumerable.go
index d5d829a..8daef72 100644
--- a/maps/treebidimap/enumerable.go
+++ b/maps/treebidimap/enumerable.go
@@ -6,9 +6,8 @@ package treebidimap
 
 import "github.com/emirpasic/gods/containers"
 
-func assertEnumerableImplementation() {
-	var _ containers.EnumerableWithKey = (*Map)(nil)
-}
+// Assert Enumerable implementation
+var _ containers.EnumerableWithKey = (*Map)(nil)
 
 // Each calls the given function once for each element, passing that element's key and value.
 func (m *Map) Each(f func(key interface{}, value interface{})) {
diff --git a/maps/treebidimap/iterator.go b/maps/treebidimap/iterator.go
index 72e9983..9961a11 100644
--- a/maps/treebidimap/iterator.go
+++ b/maps/treebidimap/iterator.go
@@ -9,9 +9,8 @@ import (
 	rbt "github.com/emirpasic/gods/trees/redblacktree"
 )
 
-func assertIteratorImplementation() {
-	var _ containers.ReverseIteratorWithKey = (*Iterator)(nil)
-}
+// Assert Iterator implementation
+var _ containers.ReverseIteratorWithKey = (*Iterator)(nil)
 
 // Iterator holding the iterator's state
 type Iterator struct {
diff --git a/maps/treebidimap/serialization.go b/maps/treebidimap/serialization.go
index e7ee0c2..2cccce6 100644
--- a/maps/treebidimap/serialization.go
+++ b/maps/treebidimap/serialization.go
@@ -10,10 +10,9 @@ import (
 	"github.com/emirpasic/gods/utils"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*Map)(nil)
-	var _ containers.JSONDeserializer = (*Map)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*Map)(nil)
+var _ containers.JSONDeserializer = (*Map)(nil)
 
 // ToJSON outputs the JSON representation of the map.
 func (m *Map) ToJSON() ([]byte, error) {
diff --git a/maps/treebidimap/treebidimap.go b/maps/treebidimap/treebidimap.go
index 87eff9f..37af07e 100644
--- a/maps/treebidimap/treebidimap.go
+++ b/maps/treebidimap/treebidimap.go
@@ -25,9 +25,8 @@ import (
 	"strings"
 )
 
-func assertMapImplementation() {
-	var _ maps.BidiMap = (*Map)(nil)
-}
+// Assert Map implementation
+var _ maps.BidiMap = (*Map)(nil)
 
 // Map holds the elements in two red-black trees.
 type Map struct {
diff --git a/maps/treemap/enumerable.go b/maps/treemap/enumerable.go
index 8cea6d0..34b3704 100644
--- a/maps/treemap/enumerable.go
+++ b/maps/treemap/enumerable.go
@@ -9,9 +9,8 @@ import (
 	rbt "github.com/emirpasic/gods/trees/redblacktree"
 )
 
-func assertEnumerableImplementation() {
-	var _ containers.EnumerableWithKey = (*Map)(nil)
-}
+// Assert Enumerable implementation
+var _ containers.EnumerableWithKey = (*Map)(nil)
 
 // Each calls the given function once for each element, passing that element's key and value.
 func (m *Map) Each(f func(key interface{}, value interface{})) {
diff --git a/maps/treemap/iterator.go b/maps/treemap/iterator.go
index e7950a1..becb56d 100644
--- a/maps/treemap/iterator.go
+++ b/maps/treemap/iterator.go
@@ -9,9 +9,8 @@ import (
 	rbt "github.com/emirpasic/gods/trees/redblacktree"
 )
 
-func assertIteratorImplementation() {
-	var _ containers.ReverseIteratorWithKey = (*Iterator)(nil)
-}
+// Assert Iterator implementation
+var _ containers.ReverseIteratorWithKey = (*Iterator)(nil)
 
 // Iterator holding the iterator's state
 type Iterator struct {
diff --git a/maps/treemap/serialization.go b/maps/treemap/serialization.go
index 619a6a7..415a77d 100644
--- a/maps/treemap/serialization.go
+++ b/maps/treemap/serialization.go
@@ -8,10 +8,9 @@ import (
 	"github.com/emirpasic/gods/containers"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*Map)(nil)
-	var _ containers.JSONDeserializer = (*Map)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*Map)(nil)
+var _ containers.JSONDeserializer = (*Map)(nil)
 
 // ToJSON outputs the JSON representation of the map.
 func (m *Map) ToJSON() ([]byte, error) {
diff --git a/maps/treemap/treemap.go b/maps/treemap/treemap.go
index a8e1dc5..a77d16d 100644
--- a/maps/treemap/treemap.go
+++ b/maps/treemap/treemap.go
@@ -19,9 +19,8 @@ import (
 	"strings"
 )
 
-func assertMapImplementation() {
-	var _ maps.Map = (*Map)(nil)
-}
+// Assert Map implementation
+var _ maps.Map = (*Map)(nil)
 
 // Map holds the elements in a red-black tree
 type Map struct {
diff --git a/sets/hashset/hashset.go b/sets/hashset/hashset.go
index 558e628..9439928 100644
--- a/sets/hashset/hashset.go
+++ b/sets/hashset/hashset.go
@@ -15,9 +15,8 @@ import (
 	"strings"
 )
 
-func assertSetImplementation() {
-	var _ sets.Set = (*Set)(nil)
-}
+// Assert Set implementation
+var _ sets.Set = (*Set)(nil)
 
 // Set holds elements in go's native map
 type Set struct {
diff --git a/sets/hashset/serialization.go b/sets/hashset/serialization.go
index b0353e8..583d129 100644
--- a/sets/hashset/serialization.go
+++ b/sets/hashset/serialization.go
@@ -9,10 +9,9 @@ import (
 	"github.com/emirpasic/gods/containers"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*Set)(nil)
-	var _ containers.JSONDeserializer = (*Set)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*Set)(nil)
+var _ containers.JSONDeserializer = (*Set)(nil)
 
 // ToJSON outputs the JSON representation of the set.
 func (set *Set) ToJSON() ([]byte, error) {
diff --git a/sets/linkedhashset/enumerable.go b/sets/linkedhashset/enumerable.go
index ad6ac96..fc85572 100644
--- a/sets/linkedhashset/enumerable.go
+++ b/sets/linkedhashset/enumerable.go
@@ -6,9 +6,8 @@ package linkedhashset
 
 import "github.com/emirpasic/gods/containers"
 
-func assertEnumerableImplementation() {
-	var _ containers.EnumerableWithIndex = (*Set)(nil)
-}
+// Assert Enumerable implementation
+var _ containers.EnumerableWithIndex = (*Set)(nil)
 
 // Each calls the given function once for each element, passing that element's index and value.
 func (set *Set) Each(f func(index int, value interface{})) {
diff --git a/sets/linkedhashset/iterator.go b/sets/linkedhashset/iterator.go
index 5aa176c..aa79384 100644
--- a/sets/linkedhashset/iterator.go
+++ b/sets/linkedhashset/iterator.go
@@ -9,9 +9,8 @@ import (
 	"github.com/emirpasic/gods/lists/doublylinkedlist"
 )
 
-func assertIteratorImplementation() {
-	var _ containers.ReverseIteratorWithIndex = (*Iterator)(nil)
-}
+// Assert Iterator implementation
+var _ containers.ReverseIteratorWithIndex = (*Iterator)(nil)
 
 // Iterator holding the iterator's state
 type Iterator struct {
diff --git a/sets/linkedhashset/linkedhashset.go b/sets/linkedhashset/linkedhashset.go
index e028591..3bf4e5f 100644
--- a/sets/linkedhashset/linkedhashset.go
+++ b/sets/linkedhashset/linkedhashset.go
@@ -20,9 +20,8 @@ import (
 	"strings"
 )
 
-func assertSetImplementation() {
-	var _ sets.Set = (*Set)(nil)
-}
+// Assert Set implementation
+var _ sets.Set = (*Set)(nil)
 
 // Set holds elements in go's native map
 type Set struct {
diff --git a/sets/linkedhashset/serialization.go b/sets/linkedhashset/serialization.go
index 33b3fef..ab2f3b4 100644
--- a/sets/linkedhashset/serialization.go
+++ b/sets/linkedhashset/serialization.go
@@ -9,10 +9,9 @@ import (
 	"github.com/emirpasic/gods/containers"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*Set)(nil)
-	var _ containers.JSONDeserializer = (*Set)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*Set)(nil)
+var _ containers.JSONDeserializer = (*Set)(nil)
 
 // ToJSON outputs the JSON representation of the set.
 func (set *Set) ToJSON() ([]byte, error) {
diff --git a/sets/treeset/enumerable.go b/sets/treeset/enumerable.go
index 59a0913..c774834 100644
--- a/sets/treeset/enumerable.go
+++ b/sets/treeset/enumerable.go
@@ -9,9 +9,8 @@ import (
 	rbt "github.com/emirpasic/gods/trees/redblacktree"
 )
 
-func assertEnumerableImplementation() {
-	var _ containers.EnumerableWithIndex = (*Set)(nil)
-}
+// Assert Enumerable implementation
+var _ containers.EnumerableWithIndex = (*Set)(nil)
 
 // Each calls the given function once for each element, passing that element's index and value.
 func (set *Set) Each(f func(index int, value interface{})) {
diff --git a/sets/treeset/iterator.go b/sets/treeset/iterator.go
index 377d8b6..88a0bea 100644
--- a/sets/treeset/iterator.go
+++ b/sets/treeset/iterator.go
@@ -9,9 +9,8 @@ import (
 	rbt "github.com/emirpasic/gods/trees/redblacktree"
 )
 
-func assertIteratorImplementation() {
-	var _ containers.ReverseIteratorWithIndex = (*Iterator)(nil)
-}
+// Assert Iterator implementation
+var _ containers.ReverseIteratorWithIndex = (*Iterator)(nil)
 
 // Iterator returns a stateful iterator whose values can be fetched by an index.
 type Iterator struct {
diff --git a/sets/treeset/serialization.go b/sets/treeset/serialization.go
index a17eb78..76d049d 100644
--- a/sets/treeset/serialization.go
+++ b/sets/treeset/serialization.go
@@ -9,10 +9,9 @@ import (
 	"github.com/emirpasic/gods/containers"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*Set)(nil)
-	var _ containers.JSONDeserializer = (*Set)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*Set)(nil)
+var _ containers.JSONDeserializer = (*Set)(nil)
 
 // ToJSON outputs the JSON representation of the set.
 func (set *Set) ToJSON() ([]byte, error) {
diff --git a/sets/treeset/treeset.go b/sets/treeset/treeset.go
index 7e7d1d6..3507cc9 100644
--- a/sets/treeset/treeset.go
+++ b/sets/treeset/treeset.go
@@ -18,9 +18,8 @@ import (
 	"strings"
 )
 
-func assertSetImplementation() {
-	var _ sets.Set = (*Set)(nil)
-}
+// Assert Set implementation
+var _ sets.Set = (*Set)(nil)
 
 // Set holds elements in a red-black tree
 type Set struct {
diff --git a/stacks/arraystack/arraystack.go b/stacks/arraystack/arraystack.go
index 9a971e9..78c3dda 100644
--- a/stacks/arraystack/arraystack.go
+++ b/stacks/arraystack/arraystack.go
@@ -16,9 +16,8 @@ import (
 	"strings"
 )
 
-func assertStackImplementation() {
-	var _ stacks.Stack = (*Stack)(nil)
-}
+// Assert Stack implementation
+var _ stacks.Stack = (*Stack)(nil)
 
 // Stack holds elements in an array-list
 type Stack struct {
diff --git a/stacks/arraystack/iterator.go b/stacks/arraystack/iterator.go
index df592f0..c01d7c8 100644
--- a/stacks/arraystack/iterator.go
+++ b/stacks/arraystack/iterator.go
@@ -6,9 +6,8 @@ package arraystack
 
 import "github.com/emirpasic/gods/containers"
 
-func assertIteratorImplementation() {
-	var _ containers.ReverseIteratorWithIndex = (*Iterator)(nil)
-}
+// Assert Iterator implementation
+var _ containers.ReverseIteratorWithIndex = (*Iterator)(nil)
 
 // Iterator returns a stateful iterator whose values can be fetched by an index.
 type Iterator struct {
diff --git a/stacks/arraystack/serialization.go b/stacks/arraystack/serialization.go
index 1456c9e..e65889f 100644
--- a/stacks/arraystack/serialization.go
+++ b/stacks/arraystack/serialization.go
@@ -8,10 +8,9 @@ import (
 	"github.com/emirpasic/gods/containers"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*Stack)(nil)
-	var _ containers.JSONDeserializer = (*Stack)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*Stack)(nil)
+var _ containers.JSONDeserializer = (*Stack)(nil)
 
 // ToJSON outputs the JSON representation of the stack.
 func (stack *Stack) ToJSON() ([]byte, error) {
diff --git a/stacks/linkedliststack/iterator.go b/stacks/linkedliststack/iterator.go
index 875f922..dea086b 100644
--- a/stacks/linkedliststack/iterator.go
+++ b/stacks/linkedliststack/iterator.go
@@ -6,9 +6,8 @@ package linkedliststack
 
 import "github.com/emirpasic/gods/containers"
 
-func assertIteratorImplementation() {
-	var _ containers.IteratorWithIndex = (*Iterator)(nil)
-}
+// Assert Iterator implementation
+var _ containers.IteratorWithIndex = (*Iterator)(nil)
 
 // Iterator returns a stateful iterator whose values can be fetched by an index.
 type Iterator struct {
diff --git a/stacks/linkedliststack/linkedliststack.go b/stacks/linkedliststack/linkedliststack.go
index da5bf2f..ce69b21 100644
--- a/stacks/linkedliststack/linkedliststack.go
+++ b/stacks/linkedliststack/linkedliststack.go
@@ -16,9 +16,8 @@ import (
 	"strings"
 )
 
-func assertStackImplementation() {
-	var _ stacks.Stack = (*Stack)(nil)
-}
+// Assert Stack implementation
+var _ stacks.Stack = (*Stack)(nil)
 
 // Stack holds elements in a singly-linked-list
 type Stack struct {
diff --git a/stacks/linkedliststack/serialization.go b/stacks/linkedliststack/serialization.go
index 3beb7a8..a82b768 100644
--- a/stacks/linkedliststack/serialization.go
+++ b/stacks/linkedliststack/serialization.go
@@ -8,10 +8,9 @@ import (
 	"github.com/emirpasic/gods/containers"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*Stack)(nil)
-	var _ containers.JSONDeserializer = (*Stack)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*Stack)(nil)
+var _ containers.JSONDeserializer = (*Stack)(nil)
 
 // ToJSON outputs the JSON representation of the stack.
 func (stack *Stack) ToJSON() ([]byte, error) {
diff --git a/trees/avltree/avltree.go b/trees/avltree/avltree.go
index fd1a405..128d313 100644
--- a/trees/avltree/avltree.go
+++ b/trees/avltree/avltree.go
@@ -15,9 +15,8 @@ import (
 	"github.com/emirpasic/gods/utils"
 )
 
-func assertTreeImplementation() {
-	var _ trees.Tree = new(Tree)
-}
+// Assert Tree implementation
+var _ trees.Tree = new(Tree)
 
 // Tree holds elements of the AVL tree.
 type Tree struct {
diff --git a/trees/avltree/iterator.go b/trees/avltree/iterator.go
index c4d69f4..0186e40 100644
--- a/trees/avltree/iterator.go
+++ b/trees/avltree/iterator.go
@@ -6,9 +6,8 @@ package avltree
 
 import "github.com/emirpasic/gods/containers"
 
-func assertIteratorImplementation() {
-	var _ containers.ReverseIteratorWithKey = (*Iterator)(nil)
-}
+// Assert Iterator implementation
+var _ containers.ReverseIteratorWithKey = (*Iterator)(nil)
 
 // Iterator holding the iterator's state
 type Iterator struct {
diff --git a/trees/avltree/serialization.go b/trees/avltree/serialization.go
index 1ccd4a8..257c404 100644
--- a/trees/avltree/serialization.go
+++ b/trees/avltree/serialization.go
@@ -10,10 +10,9 @@ import (
 	"github.com/emirpasic/gods/utils"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*Tree)(nil)
-	var _ containers.JSONDeserializer = (*Tree)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*Tree)(nil)
+var _ containers.JSONDeserializer = (*Tree)(nil)
 
 // ToJSON outputs the JSON representation of the tree.
 func (tree *Tree) ToJSON() ([]byte, error) {
diff --git a/trees/binaryheap/binaryheap.go b/trees/binaryheap/binaryheap.go
index 70b28cf..b3412c5 100644
--- a/trees/binaryheap/binaryheap.go
+++ b/trees/binaryheap/binaryheap.go
@@ -19,9 +19,8 @@ import (
 	"strings"
 )
 
-func assertTreeImplementation() {
-	var _ trees.Tree = (*Heap)(nil)
-}
+// Assert Tree implementation
+var _ trees.Tree = (*Heap)(nil)
 
 // Heap holds elements in an array-list
 type Heap struct {
diff --git a/trees/binaryheap/iterator.go b/trees/binaryheap/iterator.go
index 343fa52..8a01b05 100644
--- a/trees/binaryheap/iterator.go
+++ b/trees/binaryheap/iterator.go
@@ -6,9 +6,8 @@ package binaryheap
 
 import "github.com/emirpasic/gods/containers"
 
-func assertIteratorImplementation() {
-	var _ containers.ReverseIteratorWithIndex = (*Iterator)(nil)
-}
+// Assert Iterator implementation
+var _ containers.ReverseIteratorWithIndex = (*Iterator)(nil)
 
 // Iterator returns a stateful iterator whose values can be fetched by an index.
 type Iterator struct {
diff --git a/trees/binaryheap/serialization.go b/trees/binaryheap/serialization.go
index 30ccb25..c1fce0a 100644
--- a/trees/binaryheap/serialization.go
+++ b/trees/binaryheap/serialization.go
@@ -8,10 +8,9 @@ import (
 	"github.com/emirpasic/gods/containers"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*Heap)(nil)
-	var _ containers.JSONDeserializer = (*Heap)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*Heap)(nil)
+var _ containers.JSONDeserializer = (*Heap)(nil)
 
 // ToJSON outputs the JSON representation of the heap.
 func (heap *Heap) ToJSON() ([]byte, error) {
diff --git a/trees/btree/btree.go b/trees/btree/btree.go
index 523358a..bb36f93 100644
--- a/trees/btree/btree.go
+++ b/trees/btree/btree.go
@@ -24,9 +24,8 @@ import (
 	"strings"
 )
 
-func assertTreeImplementation() {
-	var _ trees.Tree = (*Tree)(nil)
-}
+// Assert Tree implementation
+var _ trees.Tree = (*Tree)(nil)
 
 // Tree holds elements of the B-tree
 type Tree struct {
diff --git a/trees/btree/iterator.go b/trees/btree/iterator.go
index c74b646..fb20955 100644
--- a/trees/btree/iterator.go
+++ b/trees/btree/iterator.go
@@ -6,9 +6,8 @@ package btree
 
 import "github.com/emirpasic/gods/containers"
 
-func assertIteratorImplementation() {
-	var _ containers.ReverseIteratorWithKey = (*Iterator)(nil)
-}
+// Assert Iterator implementation
+var _ containers.ReverseIteratorWithKey = (*Iterator)(nil)
 
 // Iterator holding the iterator's state
 type Iterator struct {
diff --git a/trees/btree/serialization.go b/trees/btree/serialization.go
index 5ff7175..460f6e0 100644
--- a/trees/btree/serialization.go
+++ b/trees/btree/serialization.go
@@ -10,10 +10,9 @@ import (
 	"github.com/emirpasic/gods/utils"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*Tree)(nil)
-	var _ containers.JSONDeserializer = (*Tree)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*Tree)(nil)
+var _ containers.JSONDeserializer = (*Tree)(nil)
 
 // ToJSON outputs the JSON representation of the tree.
 func (tree *Tree) ToJSON() ([]byte, error) {
diff --git a/trees/redblacktree/iterator.go b/trees/redblacktree/iterator.go
index ce9bcaf..e39da7d 100644
--- a/trees/redblacktree/iterator.go
+++ b/trees/redblacktree/iterator.go
@@ -6,9 +6,8 @@ package redblacktree
 
 import "github.com/emirpasic/gods/containers"
 
-func assertIteratorImplementation() {
-	var _ containers.ReverseIteratorWithKey = (*Iterator)(nil)
-}
+// Assert Iterator implementation
+var _ containers.ReverseIteratorWithKey = (*Iterator)(nil)
 
 // Iterator holding the iterator's state
 type Iterator struct {
diff --git a/trees/redblacktree/redblacktree.go b/trees/redblacktree/redblacktree.go
index cce9fe0..b335e3d 100644
--- a/trees/redblacktree/redblacktree.go
+++ b/trees/redblacktree/redblacktree.go
@@ -17,9 +17,8 @@ import (
 	"github.com/emirpasic/gods/utils"
 )
 
-func assertTreeImplementation() {
-	var _ trees.Tree = (*Tree)(nil)
-}
+// Assert Tree implementation
+var _ trees.Tree = (*Tree)(nil)
 
 type color bool
 
diff --git a/trees/redblacktree/serialization.go b/trees/redblacktree/serialization.go
index da13777..9f2a23c 100644
--- a/trees/redblacktree/serialization.go
+++ b/trees/redblacktree/serialization.go
@@ -10,10 +10,9 @@ import (
 	"github.com/emirpasic/gods/utils"
 )
 
-func assertSerializationImplementation() {
-	var _ containers.JSONSerializer = (*Tree)(nil)
-	var _ containers.JSONDeserializer = (*Tree)(nil)
-}
+// Assert Serialization implementation
+var _ containers.JSONSerializer = (*Tree)(nil)
+var _ containers.JSONDeserializer = (*Tree)(nil)
 
 // ToJSON outputs the JSON representation of the tree.
 func (tree *Tree) ToJSON() ([]byte, error) {