diff --git a/default_values.go b/default_values.go
index 396bf70..2d34c64 100644
--- a/default_values.go
+++ b/default_values.go
@@ -64,6 +64,7 @@ func Float64OrDefault(v *float64) float64 {
 	return 0.0
 }
 
+// NilSafeInt32OrDefault ...
 func NilSafeInt32OrDefault(val *interface{}) int32 {
 	if *val != nil {
 		return (*val).(int32)
@@ -71,6 +72,7 @@ func NilSafeInt32OrDefault(val *interface{}) int32 {
 	return 0
 }
 
+// NilSafeInt64OrDefault ...
 func NilSafeInt64OrDefault(val *interface{}) int64 {
 	if *val != nil {
 		return (*val).(int64)
@@ -78,6 +80,7 @@ func NilSafeInt64OrDefault(val *interface{}) int64 {
 	return 0
 }
 
+// NilSafeUint32OrDefault ...
 func NilSafeUint32OrDefault(val *interface{}) uint32 {
 	if *val != nil {
 		return (*val).(uint32)
@@ -85,6 +88,7 @@ func NilSafeUint32OrDefault(val *interface{}) uint32 {
 	return 0
 }
 
+// NilSafeUint64OrDefault ...
 func NilSafeUint64OrDefault(val *interface{}) uint64 {
 	if *val != nil {
 		return (*val).(uint64)
@@ -92,6 +96,7 @@ func NilSafeUint64OrDefault(val *interface{}) uint64 {
 	return 0
 }
 
+// NilSafeFloat32OrDefault ...
 func NilSafeFloat32OrDefault(val *interface{}) float32 {
 	if *val != nil {
 		return (*val).(float32)
@@ -99,6 +104,7 @@ func NilSafeFloat32OrDefault(val *interface{}) float32 {
 	return 0.0
 }
 
+// NilSafeFloat64OrDefault ...
 func NilSafeFloat64OrDefault(val *interface{}) float64 {
 	if *val != nil {
 		return (*val).(float64)
@@ -106,9 +112,11 @@ func NilSafeFloat64OrDefault(val *interface{}) float64 {
 	return 0.0
 }
 
+// NilSafeStringOrDefault ...
 func NilSafeStringOrDefault(val *interface{}) string {
 	if *val != nil {
 		return (*val).(string)
 	}
 	return ""
 }
+
diff --git a/file_util.go b/file_util.go
index 98c24b5..6423148 100644
--- a/file_util.go
+++ b/file_util.go
@@ -8,6 +8,7 @@ import (
 	"strings"
 )
 
+// ReadFileContent ...
 func ReadFileContent(path string) ([]byte, error) {
 	f, err := os.Open(path)
 	if err != nil {
@@ -61,3 +62,4 @@ func InsertLine(lines *[]string, pos int64, l string) {
 
 	*lines = append((*lines)[:pos], tail...)
 }
+
diff --git a/http.go b/http.go
index 2435465..d14825f 100644
--- a/http.go
+++ b/http.go
@@ -58,14 +58,17 @@ func NotFoundHandlerFunc(w http.ResponseWriter, req *http.Request) {
 	NotFound(w, req, fmt.Sprintf("Resource you requested was not found: %s", req.URL.String()))
 }
 
+// SetContentType ...
 func SetContentType(w http.ResponseWriter, ctype string) {
 	w.Header().Set("Content-Type", ctype)
 }
 
+// SetResponseStatus ...
 func SetResponseStatus(w http.ResponseWriter, status int) {
 	w.WriteHeader(status)
 }
 
+// WriteResponse ...
 func WriteResponse(w http.ResponseWriter, content []byte) {
 	w.Write(content)
 }
@@ -146,3 +149,4 @@ func Conflict(w http.ResponseWriter, r *http.Request, err string) {
 func InternalServerError(w http.ResponseWriter, r *http.Request, err string) {
 	Error(w, r, http.StatusInternalServerError, err)
 }
+
diff --git a/string_util.go b/string_util.go
index e91f655..640f7e1 100644
--- a/string_util.go
+++ b/string_util.go
@@ -70,15 +70,18 @@ func ReplaceAny(s, patern, r string) (n string) {
 	return n
 }
 
+// StringToBool ...
 func StringToBool(s string) bool {
 	res, _ := strconv.ParseBool(s)
 	return res
 }
 
+// BoolToString ...
 func BoolToString(b bool) string {
 	return fmt.Sprintf("%b", b)
 }
 
+// StringSliceContains ...
 func StringSliceContains(slice []string, s string) bool {
 	for i := range slice {
 		if slice[i] == s {
@@ -88,6 +91,7 @@ func StringSliceContains(slice []string, s string) bool {
 	return false
 }
 
+// StringAt ...
 func StringAt(s string, index int) string {
 	if len(s)-1 < index || index < 0 {
 		return ""
@@ -96,6 +100,7 @@ func StringAt(s string, index int) string {
 	return string(s[index])
 }
 
+// SplitStringAtWholeWords ...
 func SplitStringAtWholeWords(s string, maxLen int) (res []string) {
 	parts := strings.Split(s, " ")
 
@@ -118,3 +123,4 @@ func SplitStringAtWholeWords(s string, maxLen int) (res []string) {
 
 	return res
 }
+