godoc update

Author: jeevatkm

guid.go

@@ -38,16 +38,16 @@ var (
 // Package methods
 //___________________________________
 
-// NewGUID method returns a new Globally Unique identifier (GUID).
+// NewGUID method returns a new Globally Unique Identifier (GUID).
 //
 // The 12-byte `UniqueId` consists of-
 //   - 4-byte value representing the seconds since the Unix epoch,
 //   - 3-byte machine identifier,
 //   - 2-byte process id, and
 //   - 3-byte counter, starting with a random value.
 //
-// NewGUID generation using Mongo Object ID algorithm to generate globally
-// unique ids - https://docs.mongodb.com/manual/reference/method/ObjectId/
+// Uses Mongo Object ID algorithm to generate globally unique ids -
+// https://docs.mongodb.com/manual/reference/method/ObjectId/
 func NewGUID() string {
 	var b [12]byte
 	// Timestamp, 4 bytes, big endian

string.go

@@ -6,6 +6,9 @@ package ess
 
 import "strings"
 
+// StringEmpty is empty string constant. Using `ess.StringEmpty` instead of "".
+const StringEmpty = ""
+
 // IsStrEmpty returns true if strings is empty otherwise false
 func IsStrEmpty(v string) bool {
 	return len(strings.TrimSpace(v)) == 0